Bug 123786 Following bug 109980, the compliance 6.0 should be added to the compiler's compliance list.
If the JRE/JDK used is a 1.6/6.0 VM, then the compliance 6.0 should be available. Compliance 1.6 implies source level 1.6 and target level 1.6.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/JavaProjectWizardFirstPage.java
fUseDefaultJRE= new SelectionButtonDialogField(SWT.RADIO);
			fUseDefaultJRE.setLabelText(getDefaultJVMLabel());
			fUseDefaultJRE.doFillIntoGrid(fGroup, 2);
			
			fPreferenceLink= new Link(fGroup, SWT.NONE);
			fPreferenceLink.setFont(fGroup.getFont());
			fPreferenceLink.setText(NewWizardMessages.JavaProjectWizardFirstPage_JREGroup_link_description);
			fPreferenceLink.setLayoutData(new GridData(GridData.END, GridData.CENTER, false, false));
			fPreferenceLink.addSelectionListener(this);
		
			fUseProjectJRE= new SelectionButtonDialogField(SWT.RADIO);
			fUseProjectJRE.setLabelText(NewWizardMessages.JavaProjectWizardFirstPage_JREGroup_specific_compliance);
			fUseProjectJRE.doFillIntoGrid(fGroup, 1);
			fUseProjectJRE.setDialogFieldListener(this);
						
			fJRECombo= new ComboDialogField(SWT.READ_ONLY);
			fillInstalledJREs(fJRECombo);
			fJRECombo.setDialogFieldListener(this);
			Combo comboControl= fJRECombo.getComboControl(fGroup);
			comboControl.setLayoutData(new GridData(GridData.BEGINNING, GridData.CENTER, true, false)); 
			
			DialogField.createEmptySpace(fGroup);
			
			fUseDefaultJRE.setSelection(true);
			fJRECombo.setEnabled(fUseProjectJRE.isSelected());
		}
		private void fillInstalledJREs(ComboDialogField comboField) {
			String selectedItem= null;
			int selectionIndex= -1;