1700470410
Boy boy=new Boy();
1700470411
1700470412
//初始化当前状态
1700470413
1700470414
boy.setState(“心情很棒!”);
1700470415
1700470416
System.out.println(”=====男孩现在的状态======”);
1700470417
1700470418
System.out.println(boy.getState());
1700470419
1700470420
//需要记录下当前状态呀
1700470421
1700470422
Boy backup=new Boy();
1700470423
1700470424
backup.setState(boy.getState());
1700470425
1700470426
//男孩去追女孩,状态改变
1700470427
1700470428
boy.changeState();
1700470429
1700470430
System.out.println(”\n=====男孩追女孩子后的状态======”);
1700470431
1700470432
System.out.println(boy.getState());
1700470433
1700470434
//追女孩失败,恢复原状
1700470435
1700470436
boy.setState(backup.getState());
1700470437
1700470438
System.out.println(”\n=====男孩恢复后的状态======”);
1700470439
1700470440
System.out.println(boy.getState());
1700470441
1700470442
}
1700470443
1700470444
}
1700470445
1700470446
程序运行结果如下所示:
1700470447
1700470448
=====男孩现在的状态======
1700470449
1700470450
心情很棒!
1700470451
1700470452
=====男孩追女孩子后的状态======
1700470453
1700470454
心情可能很不好
1700470455
1700470456
=====男孩恢复后的状态======
1700470457
1700470458
心情很棒!
1700470459
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