博客

HelloWorld.java

public class HelloWorld{
	public static void main(String[] args){
   		 Hello hello = new Hello();
       hello.setName("wgx")
      	hello.sayHello();
   }
}

Hello.java
public class Hello{
	private String name;
   public void setName(String name){
   		this.name=name;
   }
   public void sayHello(){
   		System.out.println("Hello"+name);
   }
}