java封装+构造器 笔记

public class Account{
    //私有化属性
    private String name;
    private double balance;
    private String password;
    //无参构造器
    public Account() {
    }
    //有参 构造器 后面的set 和默认的this 一样 但有条件时再写一遍实在是麻烦所以直接放在构造器中
    //也可以 前面加个this.当然最好还是区别不大 以后同名办法区分 主要看个人习惯
    public Account(String name, double balance, String password) {
        setPassword(password);
        setBalance(balance);
        setName(name);
    }

    
    public String getName() {
        return name;
    }
    public void setName(String name) {
        if(2 <= name.length() && name.length()<=4 )
            this.name = name;
        else{
            System.out.println("名字不符合规划");
            this.name = "fuck";
        }
    }

    public double getBalance() {
        return balance;
    }

    public void setBalance(double balance) {
        if(balance > 20)
            this.balance = balance;
        else{
            System.out.println("就这么点钱？滚");
            this.balance = 0;
        }
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        if(password.length() == 6)
            this.password = password;
        else {
            System.out.println("sorry,teacher 只准6位数密码 不怨我");
            this.password = "bosssb";
        }
    }


}