Using cmd commands in java to print a file

Question

Im trying to print a notepad file from my java swing application. However i can't seem to get it to work.

When i type in this command in the command prompt, it prints the given notepad file. start /min notepad /p C:\score-programma\boem.txt

however when i try to do this in java, it says the file cannot be found.

java.io.IOException: Cannot run program "start": CreateProcess error=2, Het systeem kan het opgegeven bestand niet vinden at java.lang.ProcessBuilder.start(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at nl.daalhuisen.model.Model.print(Model.java:184) at Apl$1$1.actionPerformed(Apl.java:86) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$200(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) Caused by: java.io.IOException: CreateProcess error=2, Het systeem kan het opgegeven bestand niet vinden at java.lang.ProcessImpl.create(Native Method) at java.lang.ProcessImpl.(Unknown Source) at java.lang.ProcessImpl.start(Unknown Source) ... 41 more

this is the java code i run:

String[] args = {"start", "/min", "notepad", "/p", "C:\score-programma\boem.txt"}; Runtime.getRuntime().exec(args);

i have also tried String[] args = {"cmd.exe", "start", "/min", "notepad", "/p", "C:\score-programma\boem.txt"};

This does not generate the same error, but nothing happens. What am i missing here?

Marc B · Accepted Answer · 2014-07-17 15:02:31Z

2

start is a built-in command to cmd. it's not an executable. you'd have to run:

cmd /c start notepad /p c:\etc...

the /c flag is necessary to tell cmd that you're trying to run some OTHER program. If you don't pass that in, then start, notepad, etc.. will be treated as arguments to cmd itself.

answered Jul 17, 2014 at 15:02

Marc B

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ErstwhileIII · Accepted Answer · 2014-07-17 15:17:47Z

You may want to use something like the code below .. and do some Java research for adding "minimized" settings

package com.example.command;

import java.io.*;

public class JavaRunCommand {

    public static void main(String args[]) {
        String command = "notepad /p ";
        String filepath = "C:\\Temp\\readme.txt";
        String s = null;

        try {
            // using the Runtime exec method:
            Process p = Runtime.getRuntime().exec(command + filepath);
            BufferedReader stdInput = new BufferedReader(new InputStreamReader(
                    p.getInputStream()));
            BufferedReader stdError = new BufferedReader(new InputStreamReader(
                    p.getErrorStream()));

            // read the output from the command
            System.out.println("Here is the standard output of the command:\n");
            while ((s = stdInput.readLine()) != null) {
                System.out.println(s);
            }

            // read any errors from the attempted command
            System.out
                    .println("Here is the standard error of the command (if any):\n");
            while ((s = stdError.readLine()) != null) {
                System.out.println(s);
            }

            System.exit(0);
        } catch (IOException e) {
            System.out.println("exception happened - here&#39;s what I know: ");
            e.printStackTrace();
            System.exit(-1);
        }
    }
}

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