Member Avatar for moonny

i'm trying on the tutorial at http://tools.osmosis.gr/blog/archives/2005/03/birt_rcp_viewer_1.html

i have a openReportEditor method as shown below:

private void openReportEditor() {

        serverUrlText.setText("[URL="http://127.0.0.1/"][COLOR=#0000ff]http://127.0.0.1[/COLOR][/URL]:8181/birt/");
String uri = serverUrlText.getText();

        ReportEditorInput input = new ReportEditorInput();
        input.setUri(uri);

        OpenNewBrowserAction action = new OpenNewBrowserAction(input);
        action.run();}

when i have created a button and i would like to call the openReportEditor. i did it in this way,

button2.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
openReportEditor();
     }

but the exception of ' java.lang.NullPointerException' is caught.
how to fix it?? thanks.

Edited by TrustyTony because: fixed formatting
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Member Avatar for Phaelax

Trace the problem. Find out which object is null then find out where or why its not being initialized

Member Avatar for moonny

the stack trace caught exception:

(1)  button2.addSelectionListener(new SelectionListener() {
                        public void widgetSelected(SelectionEvent e) {
                            openReportEditor();
                        }

(2) private void openReportEditor(){

        serverUrlText.setText("http://127.0.0.1:8181/birt/");
        String uri = serverUrlText.getText();

        ReportEditorInput input = new ReportEditorInput();
        input.setUri(uri);

        OpenNewBrowserAction action = new   
        OpenNewBrowserAction(input);
        action.run();

and other stack trace is as shown below:

at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:90)
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
    at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
    at my.com.shinyang.logging.ui.MainWindow.run(MainWindow.java:13)
    at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:324)
    at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
    at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
    at org.eclipse.core.launcher.Main.run(Main.java:973)
    at org.eclipse.core.launcher.Main.main(Main.java:948)

what's going on??? can anyone help???

Edited by TrustyTony because: fixed formatting
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