Bug 25737 Control+PERIOD does not navigate to next warning
If my CU has only Warnings, Control+PERIOD does not work. Why is this? On the ? Toolbar it is labeled "Next Problem". I am trying to fix warnings indicated by JDT's compiler such as non-externalized strings, and by CheckStyle. This Action should still be enabled when there are warning in the CU.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaMarkerAnnotation.java
return null;
	}
	/*
	 * @see IProblemAnnotation#getId()
	 */
	public int getId() {
		if (isProblem())
			return getMarker().getAttribute(IJavaModelMarker.ID, -1);
		return -1;
	}
	
	/*
	 * @see IProblemAnnotation#isProblem()
	 */
	public boolean isProblem() {
		return isWarning() || isError();
	}
	
	/*
	 * @see IProblemAnnotation#isTask()
	 */
	public boolean isTask() {
		return fType ==AnnotationType.TASK;
	}	
	
	/*
	 * @see IProblemAnnotation#isRelevant()
	 */
	public boolean isRelevant() {
		return !fNotRelevant;