Question

我要从java编译并运行c程序。当运行c程序时，我可以得到错误和c程序的输出文本。但是，如果c程序期望用户输入执行其程序，我如何从java代码提供该用户输入？这就是你所做的。

public void runFile() {

        appendToPane(pane, "----------- Program is executing ------------ \n", Color.LIGHT_GRAY);
        Process p;
        try {
            p = Runtime.getRuntime().exec(_TEMP_LOCATION + _FILE_NAME.split(".c")[0]);//exe file exist inside project root folder

            BufferedReader reader1 = new BufferedReader(new InputStreamReader(p.getErrorStream()));
            BufferedReader reader2 = new BufferedReader(new InputStreamReader(p.getInputStream()));
            //OutputStream a = p.getOutputStream();
            String line;
            while ((line = reader1.readLine()) != null) {
                appendToPane(pane, line + "\n", null);
            }
            while ((line = reader2.readLine()) != null) {
                appendToPane(pane, line + "\n", null);
            }
            //p.waitFor();
        } catch (Exception e) {
            e.printStackTrace();
        }
        appendToPane(pane, "----------- executing is done ------------ \n", Color.LIGHT_GRAY);
    }

Answer 1

进程还为您提供了一个OutputStream，您可以向其编写内容，并将其作为输入传递给您的进程。请参阅http://docs.oracle.com/javase/7/docs/api/java/lang/Process.html#getOutputStream()。

如何在java中提供用户输入进程？

1 个答案: