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
private boolean fProjectModified;
	
	/**
	 * Creates a Java project wizard creation page.
	 * <p>
	 * The Java project wizard reads project name and location from the main page.
	 * </p>
	 *
	 * @param root the workspace root
	 * @param mainpage the main page of the wizard
	 */	
	public NewJavaProjectWizardPage(IWorkspaceRoot root, WizardNewProjectCreationPage mainpage) {
		super(PAGE_NAME);
		
		setTitle(NewWizardMessages.getString("NewJavaProjectWizardPage.title")); 
		setDescription(NewWizardMessages.getString("NewJavaProjectWizardPage.description")); 
		
		fMainPage= mainpage;
		IStatusChangeListener listener= new IStatusChangeListener() {
			public void statusChanged(IStatus status) {
				updateStatus(status);
			}
		};
		fBuildPathsBlock= new BuildPathsBlock(root, listener, true);
		
		fProjectModified= true;
		fOutputLocation= null;
		fClasspathEntries= null;
		fAddJRE= false;
	}