需求说明：某用户共有两张银行卡，账户名称相同，但卡号和余额不同。模拟用户使用这两张银行卡进行消费的过程，并打印出消费明细实现思路：项目中创建账户类 Account，类中包括账户名称name、 ThreadLocal 类的引用变量amount，表示存款创建消费类 DailyConsmption实现Ru...

编写Java程序，在电脑硬盘里，查看 f:\text4\name 目录是否存在。

需求说明：在电脑硬盘里，查看 f:\text4\name 目录是否存在。如果不存在，则创建该目录；如果存在，则查找 readme.txt文件是否存在。如果 readme.txt 文件不存在，则创建该文件；如果 readme.txt 文件存在，则输出该文件的路径和文件大小实现思路...

编写Java程序，创建Dota游戏中的兵营类，兵营类有一个类成员变量count、一个实例变量name和另一个实例变量selfCount。

需求说明：创建Dota游戏中的兵营类兵营类有一个类成员变量count、一个实例变量name和另一个实例变量selfCount。count表示的是兵营已经创建士兵的总数；name表示的是每个兵营的名称；selfCount表示每个兵营已经创建的士兵数量。创建3个兵营，通过控制台为每个兵营定义兵营名称，并...

编写Java程序，创建一个 Person 类，该类中有一个类成员变量 country、一个实例变量 name 和另一个实例变量 age。

需求说明：创建一个 Person 类，该类中有一个类成员变量 country、一个实例变量 name 和另一个实例变量 age。country 表示地区，name 表示姓名，age 表示年龄。创建 3 个 Person 对象，并分别给这3个对象的属性赋值。分别获取3个Person对象的属性。实现思路...

请问一下各位大佬，java 写的flink程序提交到yarn集群，application name都

请问一下各位大佬，java 写的flink程序提交到yarn集群，application name都是flink session cluster，多个程序运行的话，难以分辨，如何在代码里指定application的名字呢？多谢多谢啦本问题来自阿里云开发者社区的【11大垂直技术领域开发者社群】。点...

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