java执行系统cmd命令，javacmd命令,class ExecCm

java执行系统cmd命令，javacmd命令,class ExecCm

class ExecCmd {    public static void main(String args[]) {        Runtime run = Runtime.getRuntime();        Process process = null;        try {            process = run.exec("notepad"); // 执行cmd命令            process.waitFor();        } catch (Exception e) {            System.out.println("Error executing notepad.");        }        System.out.println("Notepad returned " + process.exitValue());    }}