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
fDocletStatus= new StatusInfo();
					IPath path= new Path(fDestinationText.getText());
					if (Path.ROOT.equals(path) || Path.EMPTY.equals(path)) {
						fDestinationStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.nodestination.error")); 
					}
					File file= new File(path.toOSString());
					if (!path.isValidPath(path.toOSString()) || file.isFile()) {
						fDestinationStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.invaliddestination.error")); 
					}
					if ((path.append("package-list").toFile().exists()) || (path.append("index.html").toFile().exists())) 
						fDestinationStatus.setWarning(JavadocExportMessages.getString("JavadocTreeWizardPage.warning.mayoverwritefiles")); 
					updateStatus(findMostSevereStatus());
				}
				break;
			case TREESTATUS :
				fTreeStatus= new StatusInfo();
				if (!fInputGroup.getAllCheckedListItems().hasNext())
					fTreeStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.invalidtreeselection.error")); 
				updateStatus(findMostSevereStatus());
				break;
				
			case JAVADOCSTATUS:
				fJavadocStatus= new StatusInfo();
				String text= fJavadocCommandText.getText();
				if (text.length() == 0) {
					fJavadocStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.javadoccmd.error.enterpath"));  
				} else {
					File file= new File(text);
					if (!file.isFile()) {
						fJavadocStatus.setError(JavadocExportMessages.getString("JavadocTreeWizardPage.javadoccmd.error.notexists"));