package com.direct.str; import java.io.IOException; public class RunTimeDemo { /** * @param args */ public static void main(String[] args) { double a=12.45; long b = Math.round(a); try { Process process = Runtime.getRuntime().exec("notepad.exe");//打开记事本 //mspaint.exe 打开画板 try { Thread.sleep(10000);//睡10s } catch (InterruptedException e) { e.printStackTrace(); } process.destroy();//销毁进程 } catch (IOException e) { e.printStackTrace(); } } }