Java/com/study/demo2/Account_Main.java

package com.study.demo2;

public class Main {
  public static void main(String[] args) {
    Account acc1 = new Account("A001", "张三", 1000);
    Account acc2 = new Account("A002", "李四", 500);

    acc1.deposit(200);
    acc1.withdraw(100);
    acc1.transfer(acc2, 300);

    System.out.println("账户1余额:" + acc1.getBalance());
    System.out.println("账户2余额:" + acc2.getBalance());
  }
}