Bug 564416 - Use lambdas and method references cleanup on JDT UI codeI20200724-1800

For ui package and activator

Change-Id: I1d26d5ec87aa83e3479b7f86dab6bbbf04222d4c
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>

3 files changed, 5 insertions, 9 deletions

diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
index cdceeece58..959958dbfb 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
@@ -57,7 +57,6 @@ import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.preference.IPreferenceStore;
 import org.eclipse.jface.resource.ImageRegistry;
 import org.eclipse.jface.util.IPropertyChangeListener;
-import org.eclipse.jface.util.PropertyChangeEvent;
 
 import org.eclipse.jface.text.templates.ContextTypeRegistry;
 import org.eclipse.jface.text.templates.TemplateContextType;
@@ -420,12 +419,9 @@ public class JavaPlugin extends AbstractUIPlugin implements DebugOptionsListener
 			// Initialize AST provider
 			getASTProvider();
 
-			fThemeListener= new IPropertyChangeListener() {
-				@Override
-				public void propertyChange(PropertyChangeEvent event) {
-					if (IThemeManager.CHANGE_CURRENT_THEME.equals(event.getProperty()))
-						JavaUIPreferenceInitializer.setThemeBasedPreferences(PreferenceConstants.getPreferenceStore(), true);
-				}
+			fThemeListener= event -> {
+				if (IThemeManager.CHANGE_CURRENT_THEME.equals(event.getProperty()))
+					JavaUIPreferenceInitializer.setThemeBasedPreferences(PreferenceConstants.getPreferenceStore(), true);
 			};
 			PlatformUI.getWorkbench().getThemeManager().addPropertyChangeListener(fThemeListener);
 
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/RefactorActionGroup.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/RefactorActionGroup.java
index 10cd7dc2b9..be7672c281 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/RefactorActionGroup.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/RefactorActionGroup.java
@@ -565,7 +565,7 @@ public class RefactorActionGroup extends ActionGroup {
 		if (fEditor != null) {
 			final ITypeRoot element= getEditorInput();
 			if (element != null && ActionUtil.isOnBuildPath(element)) {
-				refactorSubmenu.addMenuListener(manager -> refactorMenuShown(manager));
+				refactorSubmenu.addMenuListener(this::refactorMenuShown);
 				refactorSubmenu.add(fNoActionAvailable);
 				menu.appendToGroup(fGroupName, refactorSubmenu);
 			}
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewJavaProjectWizardPageTwo.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewJavaProjectWizardPageTwo.java
index dc40567c5d..fba252dec0 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewJavaProjectWizardPageTwo.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewJavaProjectWizardPageTwo.java
@@ -529,7 +529,7 @@ public class NewJavaProjectWizardPageTwo extends JavaCapabilityConfigurationPage
 			return;
 		}
 
-		IRunnableWithProgress op= monitor -> doRemoveProject(monitor);
+		IRunnableWithProgress op= this::doRemoveProject;
 
 		try {
 			getContainer().run(true, true, new WorkspaceModifyDelegatingOperation(op));