helloworld.java

Java案例开发集锦,里面提供了很好的学习例子

//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());
    }
}