"No X11 DISPLAY variable was set" error came on Linux using Sikuli Stand Alone api

[doubleshow]

Original author: dharmesh...@gmail.com (March 30, 2013 16:19:18)

What steps will reproduce the problem?

1. I Created a sample script like one below on my GNU/Linux machine using the Eclipse IDE. I added the sikuli standalone .jar.

import java.io.File; import java.net.MalformedURLException; import java.net.URL;

import javax.swing.plaf.basic.BasicSplitPaneUI.KeyboardEndHandler;

import org.sikuli.api.*; import org.sikuli.api.robot.Keyboard; import org.sikuli.api.robot.Mouse; import org.sikuli.api.robot.desktop.DesktopKeyboard; import org.sikuli.api.robot.desktop.DesktopMouse; import org.sikuli.api.visual.Canvas; import org.sikuli.api.visual.DesktopCanvas;

import static org.sikuli.api.API.*;

public class FirstStandAlone {

    public static void main(String[] args) throws MalformedURLException, InterruptedException 
    {           

            // Open the main page of Google Code in the default web browser
            browse(new URL("MYAPP"));

            // Create a screen region object that corresponds to the default monitor in full screen 
            ScreenRegion s = new DesktopScreenRegion();
            System.out.println("jiuiuiuddfcscdesi");

            ScreenRegion result = s.wait(new ImageTarget(new File("//home//dgangwar/LoginFields.PNG")), 5000);
    System.out.println(null==result);
    System.out.println("jiuiuiui");

// //Target imageTarget = new ImageTarget(new File(DataFile.USERIDTEXT)); Mouse mouse = new DesktopMouse(); mouse.click(result.getCenter());

    Mouse mouse = new DesktopMouse();
            mouse.click(result.getCenter());
            Keyboard kb = new DesktopKeyboard();
            kb.type("Hijhiih");

    }

}

1. After running this program I got the below error.

   sikuli main" java.lang.UnsatisfiedLinkError:

2. I added the Path and Sikuli_Home variable to my Eclipse Run configuration, after this the above error did not come.

3. Now I ran the Test case and got the below error. I have set up my VNC with 3 screen resolutions.

   Exception in thread "main" java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operation which requires it. at java.awt.Desktop.getDesktop(Desktop.java:142) at org.sikuli.api.API.browse(API.java:20) at FirstStandAlone.main(FirstStandAlone.java:18)

What is the expected output? What do you see instead?

I used the same code on windows and it worked fine but on Linux I had the above problem.

What version of the product are you using? On what operating system?

GNU/LINUX , Sikuli-api-1.0.2-standalone.jar, Java SE 6

Please provide any additional information below.

Original issue: http://code.google.com/p/sikuli-api/issues/detail?id=41

[vinogradoff]

Have you tried to set DISPLAY variable?

export DISPLAY=localhost:0