this调用属性

示例：

class Person{
    private String name;
    private int age;

    public Person(String name,int age){
        this.name = name;
        this.age = age;
    }

    public String getInfo(){
        return  "姓名：" + this.name +",年龄：" + this.age;
    }
}

public class ThisDemo {
    public static void main(String[] args) {
        System.out.println(new Person("张三",28).getInfo());
    }

}

输出：

姓名：张三,年龄：28