Use the diamond syntax

Author: ctrueden

src/main/java/org/scijava/ui/swing/SwingIconService.java

@@ -54,8 +54,7 @@ public class SwingIconService extends AbstractService implements IconService {
 
 	// -- instance variables --
 
-	private final HashMap<Tool, AbstractButton> buttonMap =
-		new HashMap<Tool, AbstractButton>();
+	private final HashMap<Tool, AbstractButton> buttonMap = new HashMap<>();
 
 	// -- IconService methods --
 

src/main/java/org/scijava/ui/swing/SwingToolBar.java

@@ -95,7 +95,7 @@ public class SwingToolBar extends JToolBar implements ToolBar {
 	public SwingToolBar(final Context context) {
 		context.inject(this);
 
-		toolButtons = new HashMap<String, AbstractButton>();
+		toolButtons = new HashMap<>();
 		populateToolBar();
 	}
 

src/main/java/org/scijava/ui/swing/commands/CommandFinderPanel.java

@@ -244,7 +244,7 @@ public void removeUpdate(final DocumentEvent arg0) {
 
 	/** Builds the master list of available commands. */
 	private List<ModuleInfo> buildCommands(final ModuleService moduleService) {
-		final List<ModuleInfo> list = new ArrayList<ModuleInfo>();
+		final List<ModuleInfo> list = new ArrayList<>();
 		list.addAll(moduleService.getModules());
 		Collections.sort(list);
 		return list;
@@ -255,7 +255,7 @@ private void updateCommands() {
 		final ModuleInfo selected = commandsList.getSelectedRow() < 0 ? null : getCommand();
 		int counter = 0, selectedRow = -1;
 		final String regex = getRegex();
-		final List<ModuleInfo> matches = new ArrayList<ModuleInfo>();
+		final List<ModuleInfo> matches = new ArrayList<>();
 		for (final ModuleInfo command : commands) {
 			if (!command.getMenuPath().toString().toLowerCase().matches(regex)) continue; // no match
 			matches.add(command);

src/main/java/org/scijava/ui/swing/commands/WatchEventsFrame.java

@@ -82,11 +82,11 @@ public class WatchEventsFrame extends JFrame implements ActionListener,
 
 	/** Data structure storing event types that should be filtered out. */
 	private final HashSet<Class<? extends SciJavaEvent>> filtered =
-		new HashSet<Class<? extends SciJavaEvent>>();
+		new HashSet<>();
 
 	/** Data structure storing event types that should be highlighted in bold. */
 	private final HashSet<Class<? extends SciJavaEvent>> selected =
-		new HashSet<Class<? extends SciJavaEvent>>();
+		new HashSet<>();
 
 	private final DefaultTreeModel treeModel;
 	private final DefaultMutableTreeNode root;
@@ -399,7 +399,7 @@ private Iterable<DefaultMutableTreeNode> children(
 	{
 		@SuppressWarnings("unchecked")
 		final Enumeration<DefaultMutableTreeNode> en = node.children();
-		return new IteratorPlus<DefaultMutableTreeNode>(en);
+		return new IteratorPlus<>(en);
 	}
 
 }

src/main/java/org/scijava/ui/swing/mdi/SwingMdiDialogPrompt.java

@@ -73,12 +73,10 @@ public Result prompt() {
 
 	// / Translate DialogPrompt types and results to JOptionPane types and
 	// results.
-	static final Map<DialogPrompt.MessageType, Integer> msgMap =
-		new HashMap<DialogPrompt.MessageType, Integer>();
+	static final Map<DialogPrompt.MessageType, Integer> msgMap = new HashMap<>();
 	static final Map<DialogPrompt.OptionType, Integer> optionMap =
-		new HashMap<DialogPrompt.OptionType, Integer>();
-	static final Map<Integer, DialogPrompt.Result> resultMap =
-		new HashMap<Integer, DialogPrompt.Result>();
+		new HashMap<>();
+	static final Map<Integer, DialogPrompt.Result> resultMap = new HashMap<>();
 
 	static {
 		msgMap.put(DialogPrompt.MessageType.ERROR_MESSAGE,

src/main/java/org/scijava/ui/swing/menu/AbstractSwingMenuCreator.java

@@ -64,14 +64,13 @@ public abstract class AbstractSwingMenuCreator<T> extends
 {
 
 	/** Table of button groups for radio button menu items. */
-	private HashMap<String, ButtonGroup> buttonGroups =
-		new HashMap<String, ButtonGroup>();
+	private HashMap<String, ButtonGroup> buttonGroups = new HashMap<>();
 
 	// -- MenuCreator methods --
 
 	@Override
 	public void createMenus(final ShadowMenu root, final T target) {
-		buttonGroups = new HashMap<String, ButtonGroup>();
+		buttonGroups = new HashMap<>();
 		super.createMenus(root, target);
 	}
 

src/main/java/org/scijava/ui/swing/sdi/SwingDialogPrompt.java

@@ -71,12 +71,10 @@ public Result prompt() {
 	// / Translate DialogPrompt types and results to JOptionPane types and
 	// results.
 
-	static final Map<DialogPrompt.MessageType, Integer> msgMap =
-		new HashMap<DialogPrompt.MessageType, Integer>();
+	static final Map<DialogPrompt.MessageType, Integer> msgMap = new HashMap<>();
 	static final Map<DialogPrompt.OptionType, Integer> optionMap =
-		new HashMap<DialogPrompt.OptionType, Integer>();
-	static final Map<Integer, DialogPrompt.Result> resultMap =
-		new HashMap<Integer, DialogPrompt.Result>();
+		new HashMap<>();
+	static final Map<Integer, DialogPrompt.Result> resultMap = new HashMap<>();
 
 	static {
 		msgMap.put(DialogPrompt.MessageType.ERROR_MESSAGE,