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- What is the function of jdk tool javadoc?
- The function of the jdk tool javadoc is to "generate Java documentation"; javadoc is a Java documentation generator that extracts comments such as classes, methods, members, etc. from the program source code to form an API help document that matches the source code.
- JavaBase 5655 2020-10-29 09:08:01
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- Detailed explanation of WeChat payment in Java (1): API V3 version signature
- The java basic tutorial column introduces WeChat payment in Java and implements API V3 version signature.
- JavaBase 2424 2020-10-27 17:20:21
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- How to implement the ninety-nine multiplication table in java
- How to implement the multiplication table in java: first open the eclipse software, create a new java project and class; then enter the relevant code [for(int i=1;i<=9;i++) for(int j=1;j<=i ;j++);System.out.print(...)] just run.
- JavaBase 16256 2020-10-29 16:13:32
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- What is the usage of String.format?
- Usage of string.format: 1. Use the local language environment for the new string, formulate the string format and parameters to generate a formatted new string; 2. Use the specified language environment, formulate the string format and parameters to generate a formatted string.
- JavaBase 9050 2020-10-29 16:11:48
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- What is the compilation order of java code
- Java code compilation sequence: first the source code enters the lexical analyzer, then the token stream enters the syntax analyzer; then the abstract syntax tree is processed and then the semantic analyzer is performed; then the abstract syntax tree is annotated and the bytecode generator is used; finally the jvm word is generated section code.
- JavaBase 8456 2020-10-29 16:09:50
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- How to implement a queue with two stacks?
- The Java Basics Tutorial column introduces how to implement a queue using two stacks.
- JavaBase 3397 2020-10-26 17:54:47
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- How to set font size in java
- How to set the font size in java: first open the java file of eclipse and select the preferences option; then select [Java Editor Text Font] in [Colors and Fonts]; finally click edit to select the font and size to be set.
- JavaBase 51242 2022-01-12 15:14:35
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- How many bytes does char occupy in java?
- The bytes occupied by char in java: 1. The char in the internal code in java is encoded in UTF16, and one char occupies two bytes; 2. The char in the foreign code in java is encoded in UTF8, and one character occupies [1~ 6] bytes.
- JavaBase 29595 2022-01-12 15:41:28
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- How trillions of data should be migrated
- The Java basic tutorial column introduces how trillions of data should be migrated.
- JavaBase 2485 2020-10-23 17:20:41
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- How to enter statements in java
- Methods for java input statements: 1. Enter a single character [char c=(char)System.in.read()]; 2. Enter an integer or string [int a=cin.nextInt()]; 3. You can use BufferedReader Class input.
- JavaBase 56599 2020-10-23 15:15:05
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- How to import dmp files with impdp
- The method for impdp to import dmp files: first open cmd; then create a table space, create a user, and grant permissions; then log in to the ToolBox user; and finally write the import impdp statement.
- JavaBase 18692 2020-10-23 14:07:06
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- What is the shortcut key for java output statement?
- The shortcut key for java output statement is to press [alt+/] after entering syso: first import the package; then create the object in the main function; finally output the string, use the shortcut key [alt+/].
- JavaBase 19437 2020-10-23 11:56:31
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- How to create a simple example of java recursion
- How to create java recursion: first create a clear recursion end condition; then set the judgment condition, the code is [private static int sumNum(int n){if (n == 1){return 1;}return n + sumNum(n- 1)}】.
- JavaBase 12609 2020-10-23 11:39:16
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- What is the principle of java reflection mechanism
- Principle of Java reflection mechanism: 1. For any class, you can know all the properties and methods of this class, and for any object, you can call any of its methods; 2. Everything is an object, and classes are also objects; 3. When [Animal.class] is a file when it is on the hard disk. When it is loaded into the memory, it can be considered as an object.
- JavaBase 47594 2020-10-23 11:04:07
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- What is the usage of java split()
- Usage of java split(): 1. If "." is used as the separation, the necessary writing method is "String.split("\\.")"; 2. If "|" is used as the separation, the necessary writing method is "String.split("\\|")".
- JavaBase 32475 2020-10-22 11:34:46
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