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
return (IJavaProject[]) res.toArray(new IJavaProject[res.size()]);
	}
	
	protected void doValidation(int validate) {
		
		switch (validate) {
			case PREFERENCESTATUS :
				fPreferenceStatus= new StatusInfo();
				fDocletStatus= new StatusInfo();
				updateStatus(findMostSevereStatus());
				break;
			case CUSTOMSTATUS :
				if (fCustomButton.getSelection()) {
					fDestinationStatus= new StatusInfo();
					fDocletStatus= new StatusInfo();
					String doclet= fDocletTypeText.getText();
					String docletPath= fDocletText.getText();
					if (doclet.length() == 0) {
						fDocletStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.nodocletname.error")); 
					} else if (JavaConventions.validateJavaTypeName(doclet).matches(IStatus.ERROR)) {
						fDocletStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.invaliddocletname.error")); 
					} else if ((docletPath.length() == 0) || !validDocletPath(docletPath)) {
						fDocletStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.invaliddocletpath.error")); 
					}
					updateStatus(findMostSevereStatus());
				}
				break;
			case STANDARDSTATUS :
				if (fStandardButton.getSelection()) {
					fDestinationStatus= new StatusInfo();