Java compiler failed

Question

I know this has to be a simple solution but I am new to Java. When I try and compile the Hello World program I am getting:
Error!: Error: java compiler failed: javac -source 1.3 -target 1.1 -g -O -d C:\Users\Chris\AppData\Local\Temp\rapc_29286710.dir -bootcla ...
I have set my path up through the control panel and still nothing. Any help would be greatly appreciated!

Answer 1

This is the file:
* HelloWorld.java
* The sentinal sample!
* Copyright © 1998-2008 Research In Motion Ltd.
* Note: For the sake of simplicity, this sample application may not leverage
* resource bundles and resource strings. However, it is STRONGLY recommended
* that application developers make use of the localization features available
* within the BlackBerry development platform to ensure a seamless application
* experience across a variety of languages and geographies. For more information
* on localizing your application, please refer to the BlackBerry Java Development
* Environment Development Guide associated with this release.
package com.rim.samples.device.helloworlddemo;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.component.RichTextField;
* BlackBerry applications that provide a user interface must extend
* UiApplication.
public class HelloWorldDemo extends UiApplication
* Entry point for application.
public static void main(String[] args)
// Create a new instance of the application.
HelloWorldDemo theApp = new HelloWorldDemo();
// To make the application enter the event thread and start processing messages,
// we invoke the enterEventDispatcher() method.
theApp.enterEventDispatcher();
* <p>The default constructor. Creates all of the RIM UI components and pushes the
* application's root screen onto the UI stack.
public HelloWorldDemo()
// Push the main screen instance onto the UI stack for rendering.
pushScreen(new HelloWorldScreen());
* Create a new screen that extends MainScreen, which provides default standard
* behavior for BlackBerry applications.
/*package*/ final class HelloWorldScreen extends MainScreen
* HelloWorldScreen constructor.
public HelloWorldScreen()
// Add a field to the title region of the screen. We use a simple LabelField
// here. The ELLIPSIS option truncates the label text with "..." if the text
// is too long for the space available.
LabelField title = new LabelField("Hello World Demo" , LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH);
setTitle(title);
// Add a read only text field (RichTextField) to the screen. The RichTextField
// is focusable by default. In this case we provide a style to make the field
// non-focusable.
add(new RichTextField("Hello World!" ,Field.NON_FOCUSABLE));
* Display a dialog box to the user with "Goodbye!" when the application
* is closed.
* @see net.rim.device.api.ui.Screen#close()
public void close()
// Display a farewell message before closing application.
Dialog.alert("Goodbye!");
System.exit(0);
super.close();
This is what I get when I build:
Building Helloworldproject
C:\Program Files\Research In Motion\BlackBerry JDE 4.5.0\bin\rapc.exe -quiet import=..\lib\net_rim_api.jar codename=Helloworldproject Helloworldproject.rapc warnkey=0x52424200;0x52525400;0x52435200 "C:\Program Files\Research In Motion\BlackBerry JDE 4.5.0\bin\Helloworld1.java"
C:\Program Files\Research In Motion\BlackBerry JDE 4.5.0\bin\Helloworld1.java:30: class HelloWorldDemo is public, should be declared in a file named HelloWorldDemo.java
public class HelloWorldDemo extends UiApplication
^
1 error
Error!: Error: java compiler failed: javac -source 1.3 -target 1.1 -g -O -d C:\Users\Chris\AppData\Local\Temp\rapc_29286710.dir -bootcla ...
Error while building project