public static void main(String[] args){
person per = new person();
per.name = "王健林";
per.sayHello("王思聪");
}
public class person {
String name;
public void sayHello(String name){
System.out.println(name + "你好,我是" + this.name);
//通过谁调用该该方法(sayHello)
//谁就是方法中this的指向
//"就近原则"
//如果没有this,name会取离他最近的name
}
}