java的Runtime使用实例

public class TestRuntime{   public static void main(String[] args)throws Exception      {      Runtime rt = Runtime.getRuntime();      System.out.println("处理器数量："+ rt.availableProcessors());      System.out.println("空闲内存数"+ rt.freeMemory());      System.out.println("总内存数:"+rt.totalMemory());      System.out.println("可用最大内存数:"+rt.maxMemory());      //启动一个线程来运行notepad笔记本程序      System.out.println(rt.exec("notepad.exe"));      }}