helloworld.java

来自「JAVA案例开发集锦源代码 袁然 郑自国编」· Java 代码 · 共 11 行

//package mypro.hello;
public class HelloWorld{
    public String sayHello(){
        return "Hello World";
        }
public static void main(String[] args){
    HelloWorld world=new HelloWorld();
    System.out.println(world.sayHello());
    }
}