Bug 8476 JAR Packager: Make main class field editable
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/jarpackager/JarManifestWizardPage.java
*/
	public JarManifestWizardPage(JarPackage jarPackage) {
		super(PAGE_NAME);
		setTitle(JarPackagerMessages.getString("JarManifestWizardPage.title")); 
		setDescription(JarPackagerMessages.getString("JarManifestWizardPage.description")); 
		fJarPackage= jarPackage;
	}
	
	/*
	 * Method declared on IDialogPage.
	 */
	public void createControl(Composite parent) {
		
		initializeDialogUnits(parent);
		
		Composite composite= new Composite(parent, SWT.NULL);
		composite.setLayout(new GridLayout());
		composite.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL));
		createLabel(composite, JarPackagerMessages.getString("JarManifestWizardPage.manifestSource.label"), false); 
		createManifestGroup(composite);
		createSpacer(composite);
		fSealingHeaderLabel= createLabel(composite, JarPackagerMessages.getString("JarManifestWizardPage.sealingHeader.label"), false); 
		createSealingGroup(composite);
		createSpacer(composite);
		fMainClassHeaderLabel= createLabel(composite, JarPackagerMessages.getString("JarManifestWizardPage.mainClassHeader.label"), false); 
		createMainClassGroup(composite);
		setEqualButtonSizes();
		
		restoreWidgetValues();
		setControl(composite);