利用Java调用可执行命令

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package test;
/** * Add one sentence class summary here.
* Add class description here.
* @author lxx
* @version 1.0, 2004-11-16
*/
public class TestCmd {
    public TestCmd(){

    /* public void main(String args[]){
       try {
    Process process = Runtime.getRuntime().exec("cmd.exe /c start http://www.csdn.net/"); //登录网站
         Process process = Runtime.getRuntime().exec("cmd.exe /c start ping 10.144.98.100"); //调用Ping命令
    }catch (Exception e) {
    e.printStackTrace();
    }
    }
    }
    */
    //在项目下建立一个名为hello的文件夹
    public static void main(String[] args) {
        System.out.println(System.getProperty("user.dir"));
        createFolder("hello");
        }
    private static void createFolder(String folderName) {
        String temp = System.getProperty("user.dir") + java.io.File.separator+ folderName;
        java.io.File f = new java.io.File(temp);
        f.mkdirs();
        }
}
}
}