Bug 49353 Javadoc preference does not indicate bad exe until field is edited. [javadoc]
I upgarded from Sun Java 1.4.2_02 to 1.4.2_03. When I open the Javadoc preference page, the entry fields shows "C:\Java\sun\1.4.2_02\bin\javadoc.exe", which no longer exists but the error icon and message is NOT displayed at the top of the pane. If I edit the field but leave the entry still bogus, THEN the error icon and message appear. I think the error should appear as soon as the pane is displayed. Version 3.0.m6.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javadocexport/JavadocTreeWizardPage.java
SWTUtil.setButtonDimensionHint(javadocCommandBrowserButton);
		javadocCommandBrowserButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent event) {
				browseForJavadocCommand();
			}
		});
	}
	
	
	
	protected void createInputGroup(Composite composite) {
		createLabel(composite, SWT.NONE, JavadocExportMessages.getString("JavadocTreeWizardPage.checkboxtreeandlistgroup.label"), createGridData(6)); 
		Composite c= new Composite(composite, SWT.NONE);
		GridLayout layout= new GridLayout();
		layout.numColumns= 1;
		layout.makeColumnsEqualWidth= true;
		layout.marginWidth= 0;
		layout.marginHeight= 0;
		c.setLayout(layout);
		c.setLayoutData(createGridData(GridData.FILL_HORIZONTAL, 6, 0));
		
		ITreeContentProvider treeContentProvider= new JavadocProjectContentProvider();
		ITreeContentProvider listContentProvider= new JavadocMemberContentProvider();
		fInputGroup= new CheckboxTreeAndListGroup(c, this, treeContentProvider, new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_DEFAULT), listContentProvider, new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_DEFAULT), SWT.NONE, convertWidthInCharsToPixels(60), convertHeightInCharsToPixels(10));
		fInputGroup.addCheckStateListener(new ICheckStateListener() {
			public void checkStateChanged(CheckStateChangedEvent e) {
				doValidation(TREESTATUS);
			}
		});
		fInputGroup.setTreeSorter(new JavaElementSorter());