HelloSWT Application Using Eclipse

HelloSWT Application Using Eclipse

This example demonstrates how to build a simple Hello SWT example GUI using Eclipse.

• Start Eclipse and open the Java perspective.
• Create a new Java project. Name it HelloSWT. Click Next.
• Open the Libraries tab and click Add Variable.
• Click Configure Variables.
• Click New.
• Set the name to LIB_SWT.
• Click File.
• From the Places menu, select File System.
• Go to /usr/lib64/eclipse directory.
• Select swt.jar and click Ok.
• Click Ok again.
• You should see LIB_SWT set as a classpath variable.
• Click Ok.
• Then click Finish.

You should end up with this:

Now add a new class to your project. Call this class HelloSWT, set the package name to ca.on.senecac.scs, select "public static void main" and paste in this code.

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
 
public class HelloSWT {
 
   public static void main (String [] args) {
       Display display = new Display ();
       Shell shell = new Shell(display);
 
       Text helloSWT = new Text(shell, SWT.NONE);
       helloSWT.setText("Hello SWT");
       helloSWT.pack();
 
       shell.pack();
       shell.open ();
       while (!shell.isDisposed ()) {
           if (!display.readAndDispatch ()) display.sleep ();
       }
       display.dispose ();
   }
}

You should now have something like this.

Finally, save your work and then run the project as a Java application. You should get this small window showing somewhere on your desktop.

Congratulations, you're done!