Java中this的基础用法

 1 public class Person {
 2     private String name;
 3     private int age;
 4 
 5     public Person(String name, int age) {
 6         //this调用本类属性进行赋值
 7         this.name = name;
 8         this.age = age;
 9     }
10     @Override
11     public String toString() {
12         return "Person{" +
13                 "name=‘" + name + ‘\‘‘ +
14                 ", age=" + age +
15                 ‘}‘;
16     }
17 }

 1 public class Person {
 2     private String name;
 3     private int age;
 4 
 5     public Person(String name, int age) {
 6         //去掉this，那么结果会怎么样呢？
 7         name = name;
 8         age = age;
 9     }
10     @Override
11     public String toString() {
12         return "Person{" +
13                 "name=‘" + name + ‘\‘‘ +
14                 ", age=" + age +
15                 ‘}‘;
16     }
17 }

 1 public class Person {
 2     private String name;
 3     private int age;
 4 
 5     public Person() {
 6     }
 7 
 8     public Person(String name, int age) {
 9         //使用this调用上面的无参构造方法
10         //构造方法在实例化对象时被自动调用，使用this须放在第一行
11         this();
12         this.name = name;
13         this.age = age;
14     }
15 }

 1 public class Person {
 2     private String name;
 3     private int age;
 4 
 5     public Person(String name, int age) {
 6         this.name = name;
 7         this.age = age;
 8     }
 9     public String getPersonInfo(){
10         return "调用方法的当前对象->"+this;
11     }
12 }