Java static关键字练习

题目要求

编写一个类实现银行账户的概念，包含的属性有“帐号”、“密码”、“存款余额”、“利率”、“最小余额”，

• 定义封装这些属性的方法。账号要自动生成。
• 编写主类，使用银行账户类，输入、输出3个储户的上述信息。
• 考虑：哪些属性可以设计成static属性。

AccountTest.java

public class AccountTest {

	public static void main(String[] args) {

		Account acct1 = new Account();
		Account acct2 = new Account("qwerty", 5000);
		
		Account.setInterestRate(0.012);
		Account.setMinBalance(100);

		System.out.println(acct1);
		System.out.println(acct2);
		
		System.out.println(Account.getInterestRate());
		System.out.println(Account.getMinBalance());


	}
}

class Account {

	private int id;
	private String pwd = "000000";
	private double balance;

	private static double interestRate;
	private static double minBalance = 1.0;
	private static int init = 1001;

	public Account() {
		this.id = init++;
	}

	public Account(String pwd, double balance) {
		this.id = init++;
		this.pwd = pwd;
		this.balance = balance;
	}

	public String getPwd() {
		return pwd;
	}

	public void setPwd(String pwd) {
		this.pwd = pwd;
	}

	public static double getInterestRate() {
		return interestRate;
	}

	public static void setInterestRate(double interestRate) {
		Account.interestRate = interestRate;
	}

	public static double getMinBalance() {
		return minBalance;
	}

	public static void setMinBalance(double minBalance) {
		Account.minBalance = minBalance;
	}

	public int getId() {
		return id;
	}

	public double getBalance() {
		return balance;
	}

	@Override
	public String toString() {
		return "Account [id=" + id + ", pwd=" + pwd + ", balance=" + balance + "]";
	}
	

}

最后

以上就是寂寞硬币为你收集整理的Java static关键字练习的全部内容，希望文章能够帮你解决Java static关键字练习所遇到的程序开发问题。

如果觉得靠谱客网站的内容还不错，欢迎将靠谱客网站推荐给程序员好友。