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应用程序首选项存储属性映射:保存至文件中Properties settins=new Properties(); settins.put("name","good"); FileOutputStream fout=null; try { fout = new FileOutputStrea... 阅读全文
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给定类名,打印关于类的所有信息import java.lang.reflect.*;import javax.activation.FileDataSource;public class ReflactionTest { public ReflactionTest() { } public st... 阅读全文
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继承:子类不能访问超类 private 域this 用途: 引用隐式参数 调用类的其他构造器super 用途: 调用超类的方法 调用超类的构造器子类对象可以赋给超类的变量,该变量可以根据子类的具体实现调用不同方法不能将超类引用赋给子类变量,显而易见的例子,人是动物,但是动物不一定是人方法重载时,会一... 阅读全文
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继续畅通工程Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 18100Accepted Submission(s): 7838Problem Des... 阅读全文
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畅通工程再续Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 20477Accepted Submission(s): 6453Problem Des... 阅读全文
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Jungle RoadsTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5681Accepted Submission(s): 4098Proble... 阅读全文
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Eddy's pictureTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8206Accepted Submission(s): 4164Prob... 阅读全文
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Constructing RoadsTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 17641Accepted Submission(s): 671... 阅读全文
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还是畅通工程Time Limit: 4000/2000 MS (Java/Others)Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 33106Accepted Submission(s): 14936Problem De... 阅读全文
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stCoder(有米!)畅通工程Time Limit: 1000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 21856Accepted Submission(s): 9461P... 阅读全文