java如何开启一个dos窗口?

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java如何开启一个dos窗口?20

try{
Process process = Runtime.getRuntime().exec("cmd.exe");
int i=process.waitFor();
System.out.println("i="+i);
}catch(Exception e)
{
e.printStackTrace();
}

这样执行了cmd命令，但为什么没有弹出dos窗口呀?? 查看操作系统进程，又有cmd的进程....
因为我要通过java调用一个bat程序，而 bat程序就是在一个dos窗口下运行的程序，如果不开这个窗口，看不到程序的运行.....
还请各位朋友帮忙！小弟先行谢过了!

2008年5月31日 19:25

ioio
0
0 0 0

2个答案按时间排序按投票排序

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  try {
            Process process = Runtime.getRuntime().exec("cmd.exe");
            final BufferedWriter outputStream = new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
            final BufferedReader inputStream = new BufferedReader(new InputStreamReader(process.getInputStream()));
            new Thread(new Runnable() {
               String line;

                public void run() {
                    System.out.println("listener started");
                    try {
                        while ((line=inputStream.readLine()) != null) {
                            System.out.println(line);
                        }
                    } catch (IOException e) {
                        //e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                    }
                }
            }).start();
            new Thread(new Runnable() {
                final BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

                public void run() {
                    System.out.println("writer started");
                    String line;
                    try {
                        while ((line = br.readLine()) != null) {
                            outputStream.write(line + "\r\n");
                            outputStream.flush();
                        }
                    } catch (IOException e) {
                        //e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                    }
                }
            }).start();
            int i = process.waitFor();
            System.out.println("i=" + i);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

2008年6月02日 14:23

ggmmaallee
2
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添加评论

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try {
            Process process = Runtime.getRuntime().exec("cmd.exe");
            OutputStream outputStream = process.getOutputStream();
            final InputStream inputStream = process.getInputStream();
            new Thread(new Runnable(){
                byte[] cache = new byte[1024];
                public void run() {
                     System.out.println("listener started");
                    try {
                        while(inputStream.read(cache)!=-1){
                            System.out.println(new String(cache));
                    }
                    } catch (IOException e) {
                        //e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
                    }
                }
            }).start();
             outputStream.write(new byte[]{'d','i','r','\n'});
            //inputStream.
            int i = process.waitFor();
            System.out.println("i=" + i);
        } catch (Exception e) {
            e.printStackTrace();
        }

明白了没?

2008年6月02日 11:24

ggmmaallee
2
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