MemoryMonitor demonstrates the use of the java.lang.management API in observing the memory usage of all memory pools consumed by the application. This simple demo program queries the memory usage of each memory pool and plots the memory u

java 命令模式，能够实现OCp原则，实现代码重构，包括例子。-java command mode to achieve OCp principles, code remodeling, including examples.

java编写的命令行下计算个人所得税的程序,不错-Written in Java command line under the calculation of individual income tax program, is good