java this 用法

class Person{
String name;

void talk(String name){
System.out.println("my name is " + this.name);//用 this 表示调用类里面的成员变量name
System.out.println("my name is " + name);// 不用 this 表示调用函数参数name
}
}


class Test{
public static void main(String args []){
Person p1 = new Person();
p1.name = "张三";

Person p2 = new Person();
p2.name = "李四";

p1.talk("wanger1");
p2.talk("wanger2");
}

}

输出：

my name is 张三
my name is wanger1
my name is 李四
my name is wanger2