Bug 127791 [preferences] new compiler option COMPILER_PB_FALLTHROUGH_CASE
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/ProblemSeveritiesConfigurationBlock.java
validateSettings(null, null, null);
	
		return mainComp;
	}
	
	private Composite createStyleTabContent(Composite folder) {
		String[] errorWarningIgnore= new String[] { ERROR, WARNING, IGNORE };
		
		String[] errorWarningIgnoreLabels= new String[] {
			PreferencesMessages.ProblemSeveritiesConfigurationBlock_error,  
			PreferencesMessages.ProblemSeveritiesConfigurationBlock_warning, 
			PreferencesMessages.ProblemSeveritiesConfigurationBlock_ignore
		};
		
		String[] enabledDisabled= new String[] { ENABLED, DISABLED };
		
		int nColumns= 3;
		
		final ScrolledPageContent sc1 = new ScrolledPageContent(folder);
		
		Composite composite= sc1.getBody();
		GridLayout layout= new GridLayout(nColumns, false);
		layout.marginHeight= 0;
		layout.marginWidth= 0;
		composite.setLayout(layout);
		
		Label description= new Label(composite, SWT.LEFT | SWT.WRAP);
		description.setFont(description.getFont());
		description.setText(PreferencesMessages.ProblemSeveritiesConfigurationBlock_common_description); 
		description.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, true, false, nColumns - 1, 1));