static关键字的练习

本题中，id是要自动生成，利用静态的属性init来 让每次创建一个类 即创建账号时 产生一个不同init值，使得id不同。

public class Account {
	private int id;//账号
	private String password;//密码
	private double balance;//余额
	private static double rate = 0.05;//余额
	@Override
	public String toString() {
		return "Account [id=" + id + ", password=" + password + ", balance=" + balance + "]";
	}
	private static double minBalack = 1;//最小余额
	private static int init = 1000;
	
	public Account (String password,double balance){
		this.id = init;
		init++;
		this.password = password;
		this.balance = balance;
		}
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public double getBalance() {
		return balance;
	}
	public void setBalance(double balance) {
		this.balance = balance;
	}
	public static double getRate() {
		return rate;
	}
	public static void setRate(double rate) {
		Account.rate = rate;
	}
	public static double getMinBalack() {
		return minBalack;
	}
	public static void setMinBalack(double minBalack) {
		Account.minBalack = minBalack;
	}
	

}

package day091;

public class TestAccount {
	public static void main(String[] args) {
		Account a = new Account("123", 500);
		Account a1 = new Account("1234", 500);
		System.out.println(a1.toString());
		
		
	}

}