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- How to use random class to generate random numbers in java
- Java uses the random class to generate random numbers: 1. Import the java.util.Random package; 2. Create a Random object; 3. Call the nextInt() function to generate random numbers.
- Javagetting Started 13109 2020-10-22 10:33:17
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- A detailed introduction to Java NIO
- Getting started with java: This article introduces the relevant knowledge of Java NIO to everyone. It has certain reference value and I hope it can help everyone.
- Javagetting Started 1903 2020-10-21 16:35:21
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- How to check jvm and thread usage
- How to check jvm and thread usage: execute the [jmap -heap PID] command to check the jvm usage; execute the [jstack pid] command to check the thread usage.
- Javagetting Started 4864 2020-10-21 15:33:55
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- What is the abbreviation of the running environment of a java program?
- The running environment of java programs is referred to as JRE. The full name of JRE is Java Runtime Environment, which means Java Runtime Environment in Chinese. It is a software developed by Sun Microsystems. JRE allows computer systems to run Java applications.
- Javagetting Started 11162 2020-10-20 17:00:17
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- Use java to implement a simple snake game
- Java course: This article shares with you the code to implement a simple snake game using Java. It has certain reference value and I hope it can help you.
- Javagetting Started 4520 2020-10-20 16:37:11
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- How to implement the ninety-nine multiplication table in java
- How to implement the ninety-nine multiplication table in Java: Construct a two-layer nested for loop. The outer for loop is used to control rows, and the inner for loop is used to control the multiplication expression on a certain row. After each row is output, it is wrapped. Can.
- Javagetting Started 37256 2020-10-20 14:47:57
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- What are the characteristics of java
- The characteristics of Java include simplicity, object-oriented, distributed, robustness, security, platform independence and portability, multi-threading, dynamics, etc. Java can write desktop applications, Web applications, distributed systems and embedded systems Applications etc.
- Javagetting Started 28707 2020-10-20 11:24:56
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- How to convert string to number in java
- Java method to convert string to number: [Integer.valueOf("12")]. If you want to convert numbers to strings, you can use the [String.valueOf(12)] method.
- Javagetting Started 11086 2020-10-20 11:09:08
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- What are the three forms of java annotations?
- The three forms of java comments are: 1. Single-line comments, such as [//single-line comments]; 2. Multi-line comments, such as [/*multi-line comments*/]; 3. Document comments, such as [/**@ author*/].
- Javagetting Started 33415 2020-10-20 10:53:50
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- How to create an array in java
- How to create an array in java: declare the array name to open up space and assign a value, such as [int[] arr; arr = new int[]{1,2,3, …};]. You can also specify the number of elements when declaring the array, and then assign values, such as [int[] arr1= new int[3];].
- Javagetting Started 50751 2020-10-20 10:13:14
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- How to intercept a string in java
- How to intercept a string in java: You can use the substring() function, such as [s.substring(0,s.length() - 1)], which means to remove the last character in the string.
- Javagetting Started 27751 2020-10-20 09:42:46
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- What should I do if java prompts that the main class cannot be found or cannot be loaded?
- Solution to the java prompt that the main class cannot be found or cannot be loaded: 1. Open the advanced system settings and enter the environment variable settings; 2. Create a new JAVA_HOME variable and set the jdk installation path; 3. Edit the PATH variable, add the path to the bin directory, and click [OK] That’s it.
- Javagetting Started 134932 2022-03-31 15:49:53
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- What are the naming rules for java identifiers?
- The Java identifier naming rules are: 1. It must be composed of letters, numbers, underscores and dollar signs; 2. It cannot start with a number; 3. It cannot conflict with keywords; 4. It cannot conflict with the class name of the Java class library; 5. Meaningful names should be used.
- Javagetting Started 36200 2020-10-20 09:17:40
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- How to copy an array in java
- Getting started with java: This article shares with you the method of copying an array, which has certain reference value. I hope it can help you.
- Javagetting Started 2829 2020-10-19 16:52:37
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- What are the naming rules for variables in java
- The naming rules for variables in Java are: 1. It must start with a letter, underscore, or dollar sign; 2. The variable name must be composed of letters, numbers, and underscores; 3. The variable name cannot conflict with the java keyword.
- Javagetting Started 28155 2020-10-19 16:27:13
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