快速开始

Windows 11
Java 8
VS Code

检查环境

bash

java -version

# 输出
openjdk version "1.8.0_462"
OpenJDK Runtime Environment (Temurin)(build 1.8.0_462-b08)
OpenJDK 64-Bit Server VM (Temurin)(build 25.462-b08, mixed mode)

编写代码

HelloWorld.java

java

public class HelloWorld {
  public static void main(String[] args) {
    System.out.println("Hello, World!");
  }
}

编译运行

bash

javac HelloWorld.java
# 指定编码
# javac -encoding utf-8 HelloWorld.java

java HelloWorld

# 输出
Hello World!