构造方法重载(创建不同的对象)
public class User {
int id; // id
String name; // 账户名
String pwd; // 密码
public User() {
}
public User(int id, String name) {
super();
this.id = id;
this.name = name;
}
public User(int id, String name, String pwd) {
this.id = id;
this.name = name;
this.pwd = pwd;
}
public static void main(String[] args) {
User u1 = new User();
User u2 = new User(101, "阳阳");
User u3 = new User(100, "旭旭", "123456");
}
}
注:如果方法构造中形参名与属性名相同时,需要使用this关键字区分属性和形参 this.id表示属性;id表示形参id
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