Bug 14421 Old .CLASS Files Are Not Deleted
When creating a project that does NOT use source folders (and does not use a bin directory for .class files) the .java and .class files are stored together in the Java package structure. When converting a project to use source folders (and the required bin directory for .class files), the old .class files stored in the Java package structure are NEVER DELETED by Eclipse. This is a bug for Eclipse 1.0 and 2.0. Since I use WSDD 4.0 (which is built on Eclipse 1.0), I've seen compilation errors due to the fact that the compiler/JDT is using old .class files rather than the new ones in the project's bin directory. I have not managed to reproduce the compile errors in build 20020416. But since the old .class files should have been deleted this is still a bug for the latest build.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewJavaProjectWizardPage.java
*/
	protected IProject getProjectHandle() {
		Assert.isNotNull(fMainPage);
		return fMainPage.getProjectHandle();
	}
	
	/**
	 * Gets the project location path from the main page
	 * Overwrite this method if you do not have a main page
	 */
	protected IPath getLocationPath() {
		Assert.isNotNull(fMainPage);
		return fMainPage.getLocationPath();
	}	
	/**
	 * Returns the Java project handle corresponding to the project defined in
	 * in the main page.
	 *
	 * @returns the Java project
	 */	
	public IJavaProject getNewJavaProject() {
		return JavaCore.create(getProjectHandle());
	}	
	/* (non-Javadoc)
	 * @see WizardPage#createControl
	 */	
	public void createControl(Composite parent) {
		Control control= fBuildPathsBlock.createControl(parent);
		setControl(control);