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JAVA Beginner's Video Tutorial
Chapter1 JAVA computer basics
1-1 computer overview
1-2 Computer Hardware and Software Overview
1-3 Software Development and Computer Languages Overview
1-4 human-computer interaction
1-5 Keyboard function keys and shortcut keys
1-6 How to open a DOS console
1-7 Common DOS commands explained
1-8 Extended DOS commands
Chapter2 JAVA language basics (1)
2-1 Java language overview
2-2 Java language cross-platform principle
2-3 Overview of JDK and JRE)
2-4 JDK download process diagram
2-5 JDK installation process diagram
2-6 Illustration of the uninstallation process of JDK
2-7 Introduction to Java development tools and introduction to JDK
2-8 Writing and running the first HelloWorld case
2-9 Summary of common problems in development
2-10 Why configure the path environment variable
2-11 How to configure Path environment variable 1
2-12 How to configure Path environment variable 2
2-13 The role of classpath and its configuration
2-14 The difference between path and classpath
2-15 Notepad++ installation and configuration
2-16 Use Notepad++ to develop programs and compile and run them
Chapter3 JAVA language basics (2)
3-1 Overview and use of keywords
3-2 Overview and composition rules for identifiers
3-3 Common naming rules for identifiers
3-4 Overview of annotations and their classification
3-5 HelloWorld case added to annotated version
3-6 The role of comments
3-7 Overview and use of constants
3-8 Overview of base systems and illustrations of binary, octal and hexadecimal systems
3-9 Representation forms of different base data
3-10 Conversion diagram from arbitrary base to decimal
3-11 Exercises from arbitrary base to decimal
3-12 Conversion diagram from decimal to arbitrary base
3-13 Exercises from decimal to arbitrary base
3-14 Fast base conversion method
3-15 Explanation of the original code's complement
3-16 Practice of inverting and complementing the original code
3-17 Overview and format of variables
3-18 Overview and classification of data types
3-19 Define variables of different data types
3-20 Things to note when using variables
3-21 Data type conversion default conversion
3-22 Illustration of variables of different data types participating in operations
3-23 Data type conversion cast
3-24 Questions about forced conversion
3-25 What is the difference between adding variables and adding constants? Interview questions
3-26 How to calculate the result after forced conversion of data overflow
3-27 Character data participates in operations
3-28 Strings participate in operations
Chapter4 JAVA language basics (3)
4-1 Several minor issues added to data types
4-2 Basic usage of arithmetic operators
4-3 Usage of arithmetic operators ++ and --
4-4 Exercises with arithmetic operators ++ and --
4-5 Various uses of arithmetic operator +
4-6 Basic usage of assignment operators
4-7 Assignment operator interview questions
4-8 Basic usage of comparison operators and their precautions
4-9 Basic usage of logical operators
4-10 The difference between logical operators && and &
4-11 Basic usage of bit operators 1
4-12 Characteristics of bitwise XOR operator
4-13 Bit operations interview questions
4-14 Basic usage of bit operators 2 and interview questions
4-15 Basic usage of ternary operator
4-16 Exercises with the ternary operator
4-17 An explanation of the basic format of keyboard entry
4-18 Keyboard entry exercise 1
4-19 Keyboard entry exercise 2
4-20 sequential structure statement
4-21 Select structure if statement format 1
4-22 Things to note when choosing a structure if statement
4-23 Select structure if statement format 2
4-24 Exercises for selecting structure if statement format 2
4-25 Conversion problem between format 2 of if statement and ternary
4-26 Select structure if statement format 3
4-27 Exercises for selecting structure if statement format 3
4-28 Exercises for selecting structure if statement format 3
4-29 Nested use of selection structure if statements
Chapter5 JAVA language basics (4)
5-1 The format and explanation of the select structure switch statement
5-2 Basic use of the switch statement in the selection structure
5-3 Things to note when choosing a structural switch statement
5-4 Select structure switch statement exercise 1 to see the program writing results
5-5 Select structure switch statement exercise 2 multiple choice questions
5-6 Select structure switch statement exercise 3 expression is a string
5-7 Respective usage scenarios of the selection structure switch and if statements
5-8 Loop Structure Loop Statement Overview
5-9 The format and basic use of the loop structure for statement
5-10 Things to note about the loop structure for statement
5-11 Exercise 1 of loop structure for statement to obtain data
5-12 Exercise 2 Summing Thoughts of Loop Structure for Statement
5-13 Exercise 3 of even sum of loop structure for statement
5-14 Exercise 4 factorial of loop structure for statement
5-15 Exercise 5 Narcissus of loop structure for statement
5-16 Exercise 6 of improved version of palindrome number for loop structure for statement
5-17 Exercise 7 Statistical Thoughts on Loop Structure for Statement
5-18 Exercise 8 of the loop structure for statement while taking the remainder problem
5-19 The format and basic use of the while statement in the loop structure
5-20 Exercise 1 Summation Thoughts of Loop Structure While Statement
5-21 Exercise 2 Statistical Thoughts on Loop Structure While Statement
5-22 The difference between loop structure while statement and for statement
5-23 Practice Everest of loop structure while statement
5-24 The format and basic use of the loop structure do...while statement
5-25 Differences between three types of loop statements in loop structures
5-26 Loop structure loop precautions - infinite loop
5-27 Loop structure loop nesting outputs stars in 4 rows and 5 columns
5-28 Loop structure loop nesting output equilateral triangle
5-29 Loop structure multiplication table
5-30 Control jump statement break statement
5-31 Control jump statement continue statement
5-32 Control jump statement return statement
5-33 The combination of while statement and break uses Xiaofang to save money
Chapter6 JAVA language basics (5)
6-1 Method overview and format description
6-2 Method definition summation case
6-3 Method calls with clear return values
6-4 Method call diagram
6-5 Exercise 1 of the method to get the larger of two numbers
6-6 Method Exercise 2 Compare two numbers for equality
6-7 Method Exercise 3: Obtain the maximum value of three numbers
6-8 Notes on methods
6-9 Method call Definition and call of void type method
6-10 Exercise 4 of the method outputs a star based on the number of rows and columns
6-11 Method Exercise 5: Output the corresponding multiplication table based on keyboard input
6-12 Overview and basic usage of method overloading
6-13 Method overloading practice comparing data for equality
6-14 Array overview and definition format instructions
6-15 Initialization of arrays Dynamic initialization
6-16 Memory allocation in Java and the difference between stack and heap
6-17 Memory diagram of array 1 an array
6-18 Array memory diagram 2 two arrays
6-19 Array memory diagram 3 three arrays
6-20 Initialization of arrays, static initialization and memory map
6-21 Two common minor problems with array operations: out-of-bounds and null pointers
6-22 Array operation 1 traversal
6-23 Array operation 2 obtains the maximum value
6-24 Array operations 3 reverse order
6-25 Array operations 4 table lookup method
6-26 Array operations 5 basic search
6-27 Overview of two-dimensional arrays and explanation of format 1
6-28 Memory diagram of two-dimensional array format 1
6-29 Explanation of two-dimensional array format 2
6-30 Memory diagram of two-dimensional array format 2
6-31 Explanation of two-dimensional array format 3
6-32 Memory diagram of two-dimensional array format 3
6-33 Two-dimensional array exercise 1 traversal
6-34 Two-dimensional array exercise 2 summation
6-35 Two-dimensional array exercise 3 Yang Hui triangle
6-36 Question 1: Parameter passing issues and illustrations in Java
6-37 Thinking Question 2 Analysis of Encryption Issues
6-38 Question 2 Implementation of the code for encryption issues
6-39 Question 2: Code improvements for encryption issues
Chapter7 JAVA object-oriented (1)
7-1 Introduction of ideas and overview of process-oriented ideas
7-2 Overview of ideas and examples
7-3 Elephant put into refrigerator case
7-4 development, design and features
7-5 Classes and Objects
7-6 Overview of class definitions and analysis of student classes
7-7 Definition of student class
7-8 Definition of mobile phone category
7-9 Student use
7-10 Use of mobile phones
7-11 The memory map of an object
7-12 Memory map of two objects
7-13 Memory map of three objects
7-14 The difference between member variables and local variables
7-15 How to call the method when the formal parameter is the class name
7-16 Overview and applications of anonymous objects
7-17 Package overview
7-18 Encapsulation benefits and design principles
7-19 Overview and characteristics of the private keyword
7-20 Private application standard cases
7-21 Overview and application of this keyword
7-22 Memory diagram of this keyword
7-23 Standard mobile phone code and its testing
7-24 Constructor method overview and format
7-25 (Overloading and precautions of constructor methods
7-26 Classification and use of member methods
7-27 Code and tests for a standard student class
7-28 A standard mobile phone code and test
7-29 What is done to create the object
7-30 When to define member variables
7-31 Rectangle case exercise
Chapter8 JAVA object-oriented (2)
8-1 Employee case exercises
8-2 Implement addition, subtraction, multiplication and division by yourself and test it
8-3 Introduction of static keyword
8-4 Characteristics of static keyword
8-5 static memory diagram
8-6 Precautions for static
8-7 The difference between static variables and member variables
8-8 Detailed explanation of the format of the main method
8-9 Use static in tool classes
8-10 Improvement of tools
8-11 Instructions making process
8-12 Use of tools and instructions
8-13 How to use the help documentation provided by JDK
8-14 Learn the random number function of Math class through JDK help documentation
8-15 Guess the number game case
8-16 Overview and classification of code blocks
8-17 Code block to see program writing results
8-18 Introduction and overview of inheritance
8-19 Inheritance cases and benefits of inheritance
8-20 Disadvantages of inheritance
8-21 Inheritance characteristics of classes in Java
8-22 Note on implementation of inheritance and when to use inheritance
8-23 Relationship between member variables in inheritance
8-24 The difference and application of this and super
8-25 The relationship between constructors and methods in inheritance
8-26 Things to note about constructors in inheritance
8-27 Interview questions in inheritance 1
8-28 Interview questions 2 in inheritance
8-29 Interview questions 3 in inheritance
8-30 Member method relationship in inheritance
8-31 Application of method overriding
8-32 Things to note about method overriding
8-33 Two interview questions
8-34 Using student and teacher cases before inheritance
8-35 Student and teacher cases using inheritance
8-36 Cat and dog case analysis
8-37 Cat and dog case implementation and testing
Chapter9 JAVA object-oriented (3)
9-1 final keyword introduction
9-2 The final keyword modifies the characteristics of classes, methods and variables
9-3 The final keyword modifies local variables
9-4 Initialization timing of final modified variables
9-5 Overview and prerequisites for polymorphism
9-6 Provide code reflection according to the premise of polymorphism
9-7 Member access characteristics in polymorphism
9-8 Advantages of polymorphism
9-9 Disadvantages of polymorphism
9-10 Upcasting and downcasting in polymorphism
9-11 The case of Confucius pretending to be a father explains the phenomenon of polymorphism
9-12 Memory diagram in polymorphic inheritance
9-13 Memory diagram of object changes in polymorphism
9-14 Cat and dog case polymorphic version
9-15 Cases of Northerners and Southerners
9-16 Polymorphic exercises to see program writing results
9-17 Introduction of abstract classes
9-18 Characteristics of abstract classes
9-19 Characteristics of members of abstract classes
9-20 Abstract class practice cat and dog case
9-21 Abstract practice teacher case
9-22 Abstract practice student case
9-23 Abstract class practice employee case
9-24 Small problems in abstract classes
9-25 Introduction of interface
9-26 Interface characteristics
9-27 Interface member characteristics
9-28 The relationship between classes, classes and interfaces, and interfaces
9-29 The difference between abstract class and interface
9-30 Cat and dog case adding high jump function analysis
9-31 Cat and dog case adds high jump function code implementation
9-32 Teacher and student cases add smoking function analysis and code implementation
Chapter10 JAVA object-oriented (4)
10-1 Athletes and coaches case studies
10-2 Athletes and coaches case implementation
10-3 Athletes and Coaches Case Tests
10-4 Class name as formal parameter
10-5 Abstract class name as formal parameter
10-6 Interface name as formal parameter
10-7 Class name as return value type
10-8 Abstract class name as return value type
10-9 Interface name as return value type
10-10 chain programming
10-11 Overview and function of package keyword
10-12 Package definition and precautions
10-13 Compile and run packaged classes
10-14 Access between classes in different packages
10-15 Overview and use of the import keyword
10-16 Testing of four permission modifiers
10-17 Common modifiers used by classes and their components
10-18 Internal class overview and access characteristics
10-19 Internal class classification and direct use of member internal classes
10-20 Common modifiers and applications of member inner classes
10-21 Interview questions for member internal classes
10-22 Problem with local inner class accessing local variables
10-23 Format and understanding of anonymous inner classes
10-24 Anonymous inner class method call
10-25 Application of anonymous inner classes in development
10-26 Anonymous inner class interview questions
Chapter11 JAVA development tools
11-1 Introduction to common development tools
11-2 Overview of Eclipse and MyEclipse
11-3 Download, install and uninstall Eclipse
11-4 How to write a HelloWorld case in Eclipse
11-5 How to compile and run programs in Eclipse
11-6 Eclipse Chinese translation and grammar checking tips
11-7 Eclipse windows and views overview
11-8 Basic configuration of Eclipse workspace
11-9 How to use content auxiliary keys in Eclipse
11-10 How to use shortcut keys in Eclipse
11-11 Automatic generation of constructor and get_set methods in Eclipse
11-12 Simplification of inheriting abstract classes or implementing interfaces in Eclipse
11-13 How to write a standard student class and its test in Eclipse
11-14 Write high jump interface abstract animal class and concrete animal subclass in Eclipse
11-15 How to generate a jar package in Eclipse and import it into a new project
11-16 How to create help documents and use jar packages in Eclipse
11-17 How to delete projects and import projects in Eclipse
11-18 Small issues to pay attention to when importing projects into Eclipse
11-19 Things to note when receiving projects during Eclipse development
11-20 Basic use of debug in Eclipse
11-21 Eclipse looks at parameter passing issues in Java
11-22 API overview
11-23 Learn the similarities and differences between Chinese and programming languages
11-24 Overview of Object class
11-25 hashCode() method of Object class
11-26 getClass() method of Object class
11-27 toString() method of Object class
11-28 equals() method of Object class
11-29 Code optimization of equals() method of Object class
11-30 finalize() method and clone() method of Object class
Chapter12 JAVA common objects (1)
12-1 Scanner overview and construction method principles
12-2 Explanation of hasNextXxx() and nextXxx() methods of Scanner class
12-3 Scanner to obtain data minor problems and solutions
12-4 Overview of the String class
12-5 String class constructor
12-6 Characteristics of String cannot be changed once assigned
12-7 The difference between String literal objects and objects created by constructors
12-8 String interview questions look at the program writing results
12-9 Judgment function of String class
12-10 Simulated user login case
12-11 Breakpoint to view simulated user login case
12-12 The enhanced version of the simulated user login case joins the guessing game
12-13 Breakpoint view simulated user login case enhanced version joins the guessing game
12-14 Get function of String class
12-15 String traversal
12-16 Cases of counting the number of uppercase, lowercase and numeric characters
12-17 Breakpoint to view statistics on the number of uppercase, lowercase and numeric characters
12-18 Conversion function of String class
12-19 Convert the first letter of the string to uppercase and the rest to lowercase
12-20 Other functions of String class
12-21 Source code analysis of compareTo() method of String class
12-22 A case of concatenating int arrays into strings
12-23 An improved version of the case of concatenating int arrays into strings
12-24 String reversal case
12-25 Illustration of case ideas for finding the number of occurrences of a small string in a large string
12-26 Case code implementation of finding the number of occurrences of a small string in a large string
12-27 Find the number of occurrences of a small string in a large string case code optimization
12-28 Breakpoint to view the case of finding the number of occurrences of a small string in a large string
12-29 Overview of StringBuffer
12-30 Constructor method of StringBuffer class
12-31 Added functionality to StringBuffer
12-32 StringBuffer deletion function
12-33 StringBuffer replacement function
Chapter13 JAVA common objects (2)
13-1 StringBuffer reverse function
13-2 StringBuffer interception function
13-3 Conversion between StringBuffer and String
13-4 Example of concatenating arrays into strings in a specified format
13-5 String reversal function example
13-6 Determine whether a string is symmetrical case
13-7 Two small interview questions about StringBuffer
13-8 String and StringBuffer are passed as parameters respectively
13-9 Illustration of the principle of advanced bubble sorting of arrays
13-10 Array advanced bubble sort code implementation
13-11 Illustration of the principle of advanced selection sorting of arrays
13-12 Array advanced selection sort code implementation
13-13 Sorting characters in a string case
13-14 Illustration of the principle of advanced binary search in arrays
13-15 Array advanced binary search code implementation
13-16 Things to note when using binary search
13-17 Overview and use of Arrays tool class
13-18 Source code analysis of Arrays tool class
13-19 Introduction of basic type wrapper classes
13-20 Integer constructor
13-21 Conversion between String and int types
13-22 Operation of base conversion in Integer
13-23 New features of JDK5: automatic boxing and unboxing
13-24 Interview questions about direct assignment of Integer
13-25 Overview of Character
13-26 Explanation of common methods of Character
13-27 Count the number of uppercase, lowercase and number occurrences in a string
13-28 How to verify a QQ number case
13-29 Overview and basic use of regular expressions
13-30 Regular expression composition rules
13-31 Regular expression judgment function
13-32 Verification email case
13-33 Regular expression split function
Chapter14 JAVA common objects (3)
14-1 A small exercise in splitting functions
14-2 Sorting numbers in a string case
14-3 Regular expression replacement function
14-4 Overview of Patterns and Matchers
14-5 Regular expression acquisition function
14-6 Math class overview and method usage
14-7 How to get random number cases in any range
14-8 Overview and method usage of Random class
14-9 An explanation of the garbage collection method gc() in the System class
14-10 Explanation of exit() and currentTimeMillis() in System class
14-11 Explanation of arraycopy() in System class
14-12 Overview and construction method of BigInteger
14-13 The use of addition, subtraction, multiplication and division of BigInteger
14-14 Introduction and overview of BigDecimal
14-15 Use of addition, subtraction, multiplication and division of BigDecimal
14-16 Overview and construction method of Date
14-17 Conversion between date and milliseconds in Date class
14-18 DateFormat implements mutual conversion between dates and strings
14-19 Writing and testing cases for date tool classes
14-20 How many days have you been in this world? Case Study
14-21 Overview of the Calendar class and methods for obtaining calendar fields
14-22 add() and set() methods of Calendar class
14-23 How to get the number of days in February of any year
Chapter15 JAVA collection framework (1)
15-1 JAVA collection framework (1)
15-2 Memory diagram for array of objects
15-3 The origin of sets and their differences from arrays
15-4 Collection inheritance system diagram
15-5 Collection function overview
15-6 Basic functional testing of Collection collection
15-7 Advanced functional testing of Collections
15-8 Collection traversal, set to array traversal
15-9 Collection stores custom objects and iterates through cases
15-10 Iterator traversal of collections
15-11 Collection stores custom objects and iterates through cases
15-12 Discussion on issues using iterators
15-13 Illustration of steps for using collections
15-14 The principle and source code analysis of iterators
15-15 Collection stores strings and traverses
15-16 Collection stores student objects and traverses
15-17 List stores strings and traverses
15-18 Characteristics of List collection
15-19 List stores student objects and traverses
15-20 Overview and testing of unique features of List collection
15-21 Unique traversal function of List collection
15-22 List stores custom objects and traverses
15-23 Unique functions of ListIterator
15-24 Causes and solutions of concurrent modification exceptions
15-25 Data structures stack and queue
15-26 Data structures arrays and linked lists
15-27 Characteristics of the three subclasses of List
15-28 ArrayList stores strings and traverses
15-29 ArrayList stores custom objects and traverses
15-30 Vector’s unique features
15-31 Unique functions of LinkedList
15-32 Remove duplicate string elements from the ArrayList collection Case 1
15-33 Breakpoint view to remove duplicate elements case 1
15-34 Remove duplicate string elements from the ArrayList collection Case 2
Chapter16 JAVA collection framework (2)
16-1 Case of removing duplicate custom object elements from ArrayList collection
16-2 Collection code to implement stack structure using LinkedList
16-3 Use LinkedList to simulate a collection of stack data structures and merge test cases
16-4 Generics Overview and Basic Usage
16-5 ArrayList stores strings and traverses the generic version
16-6 ArrayList stores custom objects and traverses the generic version
16-7 Introducing generics through Object transformation issues
16-8 Overview and use of generic classes
16-9 Overview and use of generic methods
16-10 Overview and use of generic interfaces
16-11 Advanced generic wildcards
16-12 Enhance the overview and use of for
16-13 ArrayList stores strings and traverses the enhanced for version
16-14 ArrayList stores custom objects and traverses the enhanced for version
16-15 Overview and use of static imports
16-16 Overview and use of variable parameters
16-17 Use of the asList() method of the Arrays tool class
16-18 Case illustration of collection nested storage and traversal elements
16-19 Case code implementation of collection nested storage and traversal elements
16-20 Generating 10 random numbers between 1 and 20 requires that the random numbers cannot be repeated.
16-21 Case of inputting multiple data with the keyboard and outputting the maximum value on the console
16-22 Source code analysis of toString() method of ArrayList collection
16-23 User login registration case analysis illustration
16-24 Detailed analysis of user login registration cases and implementation of subcontracting
16-25 User login registration case implementation of user basic description class and user operation interface
16-26 User login registration case specific implementation of user operation class
16-27 Implementation of user test class for user login registration case
16-28 User login registration case user test class small problem solving
16-29 User login registration case join the guessing number game
16-30 Console shopping management system function demonstration
16-31 Set collection overview and characteristics
16-32 HashSet stores strings and traverses
16-33 Source code analysis of HashSet to ensure element uniqueness
Chapter17 JAVA collection framework (3)
17-1 HashSet stores custom objects and traverses
17-2 HashSet code implementation and illustration to ensure element uniqueness
17-3 HashSet stores custom objects and iterates through exercises
17-4 Overview and use of LinkedHashSet
17-5 TreeSet stores elements of type Integer and traverses them
17-6 Source code analysis of TreeSet to ensure element sorting
17-7 The principles and diagrams of TreeSet to ensure element uniqueness and natural ordering
17-8 TreeSet stores custom objects and traverses exercise 1
17-9 TreeSet stores custom objects and traverses Exercise 2
17-10 The principle and code implementation of TreeSet to ensure element uniqueness and comparator sorting
17-11 Reinterpretation of the source code of TreeSet's add() method and summary of TreeSet's sorting of elements
17-12 Generate 10 random numbers between 1-20 and require that the random numbers cannot be repeated. Simple version of the case
17-13 Case study of inputting student information with the keyboard and sorting it by total score and then outputting it on the console
17-14 Map collection overview and features
17-15 Function overview of Map collection
17-16 Basic functional testing of Map collection
17-17 Map collection acquisition function test
17-18 Map collection traversal to find the key value
17-19 Traversing the Map collection to find the key and value of the key-value pair object
17-20 Comparison of two methods of Map collection traversal
17-21 A case where the HashMap collection key is Stirng and the value is String
17-22 A case where the HashMap collection key is an Integer and the value is a String
17-23 The case where the HashMap collection key is String and the value is Student
17-24 The case where the HashMap collection key is Student and the value is String
17-25 Overview and use of LinkedHashMap
17-26 TreeMap collection key is a String value is a case of String
17-27 The case where the TreeMap collection key is Student and the value is String
17-28 Case illustration of counting the number of occurrences of each character in a string
17-29 Case code implementation for counting the number of occurrences of each character in a string
17-30 Breakpoint to view statistics of the number of occurrences of each character in a string
17-31 Case of HashMap collection nested HashMap collection
17-32 Case of HashMap collection nested ArrayList collection
17-33 Case of ArrayList collection nested HashMap collection
Chapter18 JAVA collection framework (4)
18-1 Aggregate multiple levels of nested data analysis
18-2 Collection of multi-level nested code manifestations
18-3 The difference between HashMap and Hashtable
18-4 Overview of the Collections utility class
18-5 Explanation of common methods of Collections tool class
18-6 ArrayList stores custom objects and sorts cases
18-7 Simulate the card shuffling and dealing of Landlords
18-8 Illustration of the principle of simulating the card shuffling, dealing and sorting of cards in Landlord
18-9 Code implementation to simulate Doudizhu shuffling and dealing cards and sorting the cards
18-10 Summary of characteristics and data structures of collections
18-11 How to choose which collection to use?
18-12 Summary of common functions and traversal methods of various collections
Chapter19 JAVA IO stream (1)
19-1 Overview of IO streaming technology
19-2 Overview and classification of exceptions
19-3 How the JVM handles exceptions by default
19-4 Handling exceptions using try...catch 1
19-5 Handling exceptions using try...catch 2
19-6 JDK7’s handling solution for multiple exceptions
19-7 The difference between compile-time exceptions and run-time exceptions
19-8 Several common methods of Throwable
19-9 Handling exceptions using throws
19-10 Overview of throw and the difference from throws
19-11 How to handle exceptions?
19-12 Characteristics and functions of finally keyword
19-13 Interview questions: The difference between final, finally and finalize
19-14 Interview question: If there is return before finally
19-15 An overview of variations in exception handling and custom exceptions
19-16 Implementation and testing of custom exceptions
19-17 Unusual precautions
19-18 Overview and construction method of File class
19-19 File class creation function
19-20 Delete function of File class
19-21 Renaming function of File class
19-22 Judgment function of File class
19-23 File class acquisition function
19-24 Advanced acquisition functions of File class
19-25 Example of outputting the file name with the specified suffix in the specified directory
19-26 File filter improvement case for outputting file names with specified suffixes in specified directories
19-27 Source code of list() method with file name filter
19-28 Batch modification of file names case
19-29 Recursion overview and considerations
19-30 Ideas and illustrations of recursive problem solving
19-31 Code implementation and memory diagram for recursively finding factorial
19-32 Breakpoint to view the execution process of recursive factorial calculation
19-33 Immortal Rabbit Problem Case
Chapter20 JAVA IO stream (2)
20-1 Example of recursively outputting the absolute paths of all java files in a specified directory
20-2 Recursively delete directory with content case
20-3 Breakpoint to view the execution process of deleting a directory with content
20-4 Overview and classification of IO flows
20-5 Overview of IO stream base class and a simple requirements analysis
20-6 Constructor of FileOutputStream
20-7 FileOutputStream writes data
20-8 Three write() methods of FileOutputStream
20-9 FileOutputStream writes data to implement line breaks and append writing
20-10 FileOutputStream writes data and adds exception handling
20-11 FileInputStream reads data
20-12 Byte stream copy text file case 1
20-13 How does the computer recognize and concatenate two bytes into Chinese?
20-14 Byte stream copy text file case 2
20-15 Byte stream copy picture case
20-16 Byte stream copy video case 1
20-17 FileInputStream reads data one byte array at a time
20-18 Comparison of two ways to read data using FileInputStream
20-19 Byte stream copy text file case 3
20-20 Byte stream copy video case 2
20-21 BufferedOutputStream writes data
20-22 BufferedInputStream reads data
20-23 Four ways of byte stream copying MP4 and testing efficiency
20-24 Reasons and formats for the occurrence of conversion streams
20-25 Overview of coding tables and common coding tables
20-26 Encoding and decoding issues in String class
20-27 Use of conversion stream OutputStreamWriter
20-28 Use of conversion stream InputStreamReader
20-29 5 ways to write data in character streams
20-30 Two ways to read data from character streams
20-31 Character stream copy text file case 1
20-32 Character stream copy text file case 2
20-33 Character stream copy text file case 3
Chapter21 JAVA IO stream (3)
21-1 The use of character buffer output stream BufferedWriter
21-2 The use of character buffer input stream BufferedReader
21-3 Character buffer stream copy text file case 1
21-4 Special features of character buffer streams
21-5 Character buffer stream copy text file case 2
21-6 IO flow summary diagram
21-7 5 ways to copy text files
21-8 4 ways to copy pictures
21-9 Example of storing data in a collection into a text file
21-10 Store data in text files into collections case
21-11 Randomly obtain name cases from text files
21-12 Copy single-level folder case
21-13 Copy the file with the specified suffix in the specified directory and modify the name case
21-14 Breakpoint to view the execution process of copying files and modifying the suffix name case
21-15 Copy multi-level folder case
21-16 Case study of inputting student information using the keyboard, sorting it by total score and writing it into a text file
21-17 Example of sorting strings in one file and then writing them to another file
21-18 Custom class simulates BufferedReader's readLine() function case
21-19 Use cases for LineNumberReader
21-20 Custom class simulates LineNumberReader's function case of getting line numbers
21-21 Knowledge review of login registration cases
21-22 Login registration case IO version implementation
21-23 Overview and explanation of data input and output flows
21-24 Overview and explanation of memory operation flow
21-25 Overview and features of print streams
21-26 PrintWriter is used as a subclass of Writer
21-27 PrintWriter implements automatic refresh and line wrapping
21-28 Print flow improvement copy text file case
21-29 Overview of standard input and output streams and the nature of output statements
21-30 Three ways to achieve keyboard entry
Chapter22 JAVA IO stream (4)
22-1 Output statements are improved with character buffer streams
22-2 Random access flow overview and writing out data
22-3 Random access streams read data and manipulate file pointers
22-4 Combined streams read the contents of two files and copy them into one file
22-5 Merge streams to read the contents of multiple files and copy them into one file
22-6 Overview and use of serialization and deserialization streams
22-7 How to solve the yellow warning line problem during serialization
22-8 How to prevent object member variables from being serialized
22-9 Overview of Properties and use as a Map collection
22-10 Use of special functions of Properties
22-11 Load() and store() functions of Properties
22-12 Determine whether the specified key exists in the file. If so, modify the value.
22-13 How to make the guessing number game only playable 5 times
22-14 Introduction to NIO and a case of NIO under JDK7
Chapter23 JAVA multi-threading (1)
23-1 The introduction of multi-threaded programs
23-2 Process overview and the significance of multiple processes
23-3 Overview of threads and the significance of multithreading
23-4 Examples of multithreading and the difference between parallelism and concurrency
23-5 Is the running principle of Java program and the startup of JVM multi-threaded?
23-6 How to implement multi-threading and multi-threading method 1 ideas
23-7 Code implementation of multi-threading mode 1
23-8 Get and set thread object name
23-9 Thread scheduling and getting and setting thread priority
23-10 Thread control sleeping thread
23-11 Thread control - joining thread
23-12 Thread control courtesy thread
23-13 Thread control daemon thread
23-14 Thread control interrupt thread
23-15 Thread life cycle diagram
23-16 The idea and code implementation of multi-threading mode 2
23-17 Graphical comparison and differences between two methods of multithreading
23-18 Case Study of Selling Movie Tickets by Inheriting Thread Class
23-19 Case Study of Selling Movie Tickets by Implementing Runnable Interface
23-20 Analysis of the reasons why there are same tickets and negative tickets when buying movie tickets
23-21 Analysis of the causes of thread safety issues
23-22 Synchronized code blocks solve thread safety issues
23-23 Explanation of synchronized code blocks solving thread safety issues
23-24 Characteristics, benefits and drawbacks of synchronization
23-25 Fast locks for synchronized code and problems with application of synchronization methods and locks
23-26 Review of previous thread-safe classes
23-27 Overview and use of Lock after JDK5
23-28 Overview and use of deadlock problems
23-29 Producer-consumer problem description diagram
Chapter24 JAVA multi-threading (2)
24-1 Producer consumer problem code 1
24-2 Producer consumer question code 2 and solve thread safety issues
24-3 Illustration of the producer-consumer waiting wake-up mechanism idea
24-4 Code implementation of producer-consumer waiting wake-up mechanism
24-5 Code analysis of producer-consumer waiting wake-up mechanism
24-6 Thread state transition diagram and common execution situations
24-7 Overview and use of thread groups
24-8 Producer-consumer waiting wake-up mechanism code optimization
24-9 Overview and use of thread pools
24-10 The idea and code implementation of multi-threading mode 3
24-11 Summing case of multi-threading mode 3
24-12 Implementing multi-threaded programs using anonymous inner classes
24-13 Overview and use of timers
24-14 Multiple execution code embodiment of scheduled tasks
24-15 Delete specified directories with content regularly
24-16 Common interview questions about multithreading
Chapter25 JAVA design patterns
25-1 An overview of common object-oriented design principles
25-2 Overview and classification of design patterns
25-3 Overview and use of simple factory pattern
25-4 Overview and use of the factory method pattern
25-5 Singleton pattern: Hungry style
25-6 The lazy style of singleton pattern
25-7 Java code in singleton mode embodies the Runtime class
Chapter26 JAVA GUI
26-1 GUI overview and the difference between GUI and CLI
26-2 The difference between java.awt and javax.swing packages
26-3 Component inheritance diagram in GUI
26-4 HelloWorld form case
26-5 Optimize HelloWorld form case code
26-6 Overview and examples of event listening mechanism principles
26-7 Form close case
26-8 Adapter design pattern explained
26-9 Adapter class improves form closing case
26-10 Add a button to the form and add an event case to the button
26-11 Transfer text box value to text field case
26-12 Change the background color by moving the mouse over the button case
26-13 How to control that only numeric characters can be entered in the text box
26-14 First level menu case
26-15 Multi-level menu case
26-16 Overview and use of Netbeans
26-17 Simulation of four arithmetic operations cases
26-18 Modify the icon code of the form
26-19 How to set the code to center the form
26-20 How to modify the code of the form's skin
26-21 Add checksum prompts to four arithmetic operations cases
26-22 Review of the package structure of user login registration
26-23 Implementation of basic functions of user login and registration
26-24 User login and registration interface implementation
26-25 User login and registration interface jumps
26-26 The final version of user login registration
26-27 User login registration to join four arithmetic operations cases
Chapter27 JAVA network programming
27-1 Network Programming Overview
27-2 Network model overview and illustration
27-3 Overview of the three elements of network programming
27-4 Overview of IP in the Three Elements of Network Programming 1
27-5 IP Overview of Three Elements of Network Programming 2
27-6 Overview and use of the InetAddress class
27-7 Ports of the three elements of network programming
27-8 Protocols of the three elements of network programming
27-9 Socket communication principle diagram
27-10 UDP protocol sends data
27-11 UDP protocol receives data
27-12 Diagram of sending and receiving data using UDP protocol
27-13 UDP protocol sending and receiving data code optimization
27-14 The data on the sending end comes from the keyboard entry case
27-15 DOS window demonstration simple chat applet
27-16 Multi-threaded chat room program
27-17 Demonstration of a GUI version of the chat program case
27-18 TCP protocol sends data
27-19 TCP protocol receives data
27-20 Illustration of sending and receiving data using TCP protocol
27-21 The server gives the client a feedback case
27-22 Client keyboard input server console output
27-23 Client keyboard input server writes to text file
27-24 Client reads text file server console output
27-25 TCP protocol upload text file
27-26 TCP upload text file and give feedback
27-27 TCP protocol uploads pictures and gives feedback
27-28 Thoughts on uploading multiple clients to one server
27-29 Multi-threading improves the case of multiple clients uploading files
Chapter28 JAVA Reflection
28-1 Class loading overview and loading timing
28-2 Overview and classification of class loaders
28-3 Reflection overview
28-4 Three ways to obtain class file objects
28-5 Obtain the no-argument constructor through reflection and use
28-6 Obtain the parameterized constructor through reflection and use
28-7 Get the private constructor via reflection and use
28-8 Get member variables through reflection and use
28-9 Obtain member methods with no parameters and return values through reflection and use
28-10 Obtain member methods with parameters and return values through reflection and use
28-11 Run configuration file contents via reflection
28-12 Bypassing generic checks via reflection
28-13 Write a general method to set a certain property of an object to a specified value through reflection
28-14 Lead intermediaries through user additions, deletions, modifications and student logins and registrations
28-15 Overview and implementation of dynamic agents
28-16 Overview and use of template design patterns
28-17 Decoration mode overview and usage
Chapter29 JAVA JDK5 new features
29-1 Review of new features of JDK5
29-2 Implement your own enumeration class
29-3 Implement enum class through enum
29-4 Notes on enumerations
29-5 Common ways to enumerate classes
29-6 Review and explanation of six new features of JDK7
29-7 Download, install and uninstall JDK
29-8 Interfaces can also have methods
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