Bug 51853 Support new compiler option PREF_PB_UNUSED_DECLARED_THROWN_EXCEPTION_WHEN_OVERRIDING
20040212 Add the new setting to the compiler preference page
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerConfigurationBlock.java
updateComplianceDefaultSettings();
				}
				fComplianceStatus= validateCompliance();
			} else if (PREF_SOURCE_COMPATIBILITY.equals(changedKey) ||
					PREF_CODEGEN_TARGET_PLATFORM.equals(changedKey) ||
					PREF_PB_ASSERT_AS_IDENTIFIER.equals(changedKey)) {
				fComplianceStatus= validateCompliance();
			} else if (PREF_PB_MAX_PER_UNIT.equals(changedKey)) {
				fMaxNumberProblemsStatus= validateMaxNumberProblems();
			} else if (PREF_RESOURCE_FILTER.equals(changedKey)) {
				fResourceFilterStatus= validateResourceFilters();
			} else if (PREF_PB_UNUSED_PARAMETER.equals(changedKey) ||
					PREF_PB_DEPRECATION.equals(changedKey) ||
					PREF_PB_INVALID_JAVADOC.equals(changedKey) ||
					PREF_PB_MISSING_JAVADOC_TAGS.equals(changedKey) ||
					PREF_PB_MISSING_JAVADOC_COMMENTS.equals(changedKey) ||
					PREF_PB_LOCAL_VARIABLE_HIDING.equals(changedKey)) {				
				updateEnableStates();
			} else {
				return;
			}
		} else {
			updateEnableStates();
			updateComplianceEnableState();
			fComplianceStatus= validateCompliance();
			fMaxNumberProblemsStatus= validateMaxNumberProblems();
			fResourceFilterStatus= validateResourceFilters();
		}		
		IStatus status= StatusUtil.getMostSevere(new IStatus[] { fComplianceStatus, fMaxNumberProblemsStatus, fResourceFilterStatus });
		fContext.statusChanged(status);