how to run a java executable jar in another java program

前端未结

关注

 1  503

生来不讨喜

I know this question has been asked before but those answers didn\'t provide me an answer.

I want to execute a exec jar file in my java program and get the output fr

相关标签:

1条回答

北荒

2020-12-10 08:43

This works For Me..

public class JarRunner {
    public static void main(String[] args) {
        ProcessBuilder pb = new ProcessBuilder("java", "-jar", "C:\\JCcc.jar");
        pb.directory(new File("C:\\"));
        try {
            Process p = pb.start();
            LogStreamReader lsr = new LogStreamReader(p.getInputStream());
            Thread thread = new Thread(lsr, "LogStreamReader");
            thread.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

class LogStreamReader implements Runnable {

    private BufferedReader reader;

    public LogStreamReader(InputStream is) {
        this.reader = new BufferedReader(new InputStreamReader(is));
    }

    public void run() {
        try {
            String line = reader.readLine();
            while (line != null) {
                System.out.println(line);
                line = reader.readLine();
            }
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

This is what the Docs says-

ProcessBuilder pb = new ProcessBuilder("myCommand", "myArg1", "myArg2");

You can pass any number of arguments in constructor.