class User
{
private String name;
private String password;
private static int count=0;//count用于统计个数必须用static 声明成全局属性
public User(){
count++;
}//无参,在此用于返回count,并且无参数也不会报错
public User(String name){
this.name=name;
count++;
}//为用户名赋值,只输姓名不会报错
public User(String name,String password){
this.name=name;
this.password=password;
count++;
}//为用户名和口令赋值,三种调用方式都可以
public String getName(){
return name;
}
public void setName(String name){
this.name=name;
}
public String getPassword(){
return password;
}
public void setPassword(String password){
this.password=password;
}
public void print(){
System.out.println("用户名:"+name+"\t"+"口令:"+password);
}
public void count(){
System.out.println("用户个数:"+(count-1));
}
}
public class t5 {
public static void main(String[] args) {
// TODO Auto-generated method stub
User user1=new User("李四","131415");
user1.print();
User user2=new User();
user2.print();
User user3=new User("王五");
user3.print();
new User().count();
}
}