chore: use lambda (PR #544)

jadx-gui/src/main/java/jadx/gui/jobs/IndexJob.java

@@ -34,24 +34,21 @@ public class IndexJob extends BackgroundJob {
 		cache.setTextIndex(index);
 		cache.setUsageInfo(usageInfo);
 		for (final JavaClass cls : wrapper.getIncludedClasses()) {
-			addTask(new Runnable() {
-				@Override
-				public void run() {
-					try {
-						index.indexNames(cls);
+			addTask(() -> {
+				try {
+					index.indexNames(cls);
 
-						CodeLinesInfo linesInfo = new CodeLinesInfo(cls);
-						List<StringRef> lines = splitLines(cls);
+					CodeLinesInfo linesInfo = new CodeLinesInfo(cls);
+					List<StringRef> lines = splitLines(cls);
 
-						usageInfo.processClass(cls, linesInfo, lines);
-						if (Utils.isFreeMemoryAvailable()) {
-							index.indexCode(cls, linesInfo, lines);
-						} else {
-							index.classCodeIndexSkipped(cls);
-						}
-					} catch (Exception e) {
-						LOG.error("Index error in class: {}", cls.getFullName(), e);
+					usageInfo.processClass(cls, linesInfo, lines);
+					if (Utils.isFreeMemoryAvailable()) {
+						index.indexCode(cls, linesInfo, lines);
+					} else {
+						index.classCodeIndexSkipped(cls);
 					}
+				} catch (Exception e) {
+					LOG.error("Index error in class: {}", cls.getFullName(), e);
 				}
 			});
 		}

jadx-gui/src/main/java/jadx/gui/ui/MainWindow.java

@@ -185,12 +185,9 @@ public class MainWindow extends JFrame {
 		JadxUpdate.check(new IUpdateCallback() {
 			@Override
 			public void onUpdate(final Release r) {
-				SwingUtilities.invokeLater(new Runnable() {
-					@Override
-					public void run() {
-						updateLink.setText(NLS.str("menu.update_label", r.getName()));
-						updateLink.setVisible(true);
-					}
+				SwingUtilities.invokeLater(() -> {
+					updateLink.setText(NLS.str("menu.update_label", r.getName()));
+					updateLink.setVisible(true);
 				});
 			}
 		});

jadx-gui/src/main/java/jadx/gui/ui/ProgressPanel.java

@@ -2,8 +2,6 @@ package jadx.gui.ui;
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 
@@ -38,12 +36,7 @@ public class ProgressPanel extends JPanel implements PropertyChangeListener {
 			cancelButton.setBorderPainted(false);
 			cancelButton.setFocusPainted(false);
 			cancelButton.setContentAreaFilled(false);
-			cancelButton.addActionListener(new ActionListener() {
-				@Override
-				public void actionPerformed(ActionEvent e) {
-					mainWindow.cancelBackgroundJobs();
-				}
-			});
+			cancelButton.addActionListener(e -> mainWindow.cancelBackgroundJobs());
 			add(cancelButton);
 		}
 	}

jadx-gui/src/main/java/jadx/gui/ui/codearea/CodeArea.java

 package jadx.gui.ui.codearea;
 
-import javax.swing.*;
-import javax.swing.event.PopupMenuListener;
+import java.awt.Dimension;
+import java.awt.Point;
+import java.awt.Rectangle;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+import javax.swing.JPopupMenu;
+import javax.swing.JViewport;
+import javax.swing.SwingUtilities;
 import javax.swing.text.BadLocationException;
 import javax.swing.text.Caret;
 import javax.swing.text.DefaultCaret;
-import java.awt.*;
-import java.awt.event.MouseAdapter;
-import java.awt.event.MouseEvent;
 
 import org.fife.ui.rsyntaxtextarea.RSyntaxDocument;
 import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
@@ -91,12 +95,12 @@ public final class CodeArea extends RSyntaxTextArea {
 	}
 
 	private void addMenuItems(JClass jCls) {
-		Action findUsage = new FindUsageAction(contentPanel, this, jCls);
+		FindUsageAction findUsage = new FindUsageAction(contentPanel, this, jCls);
 
 		JPopupMenu popup = getPopupMenu();
 		popup.addSeparator();
 		popup.add(findUsage);
-		popup.addPopupMenuListener((PopupMenuListener) findUsage);
+		popup.addPopupMenuListener(findUsage);
 	}
 
 	public void loadSettings() {

jadx-gui/src/main/java/jadx/gui/ui/codearea/SearchBar.java

@@ -3,7 +3,6 @@ package jadx.gui.ui.codearea;
 import javax.swing.*;
 import javax.swing.text.BadLocationException;
 import java.awt.*;
-import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
@@ -40,6 +39,7 @@ class SearchBar extends JToolBar {
 
 	private final JCheckBox wholeWordCB;
 	private final JCheckBox matchCaseCB;
+	private ActionListener forwardListener = e -> search(0);
 
 	public SearchBar(RSyntaxTextArea textArea) {
 		rTextArea = textArea;
@@ -64,55 +64,41 @@ class SearchBar extends JToolBar {
 				}
 			}
 		});
-		searchField.addActionListener(new ActionListener() {
-			public void actionPerformed(ActionEvent e) {
-				search(1);
-			}
-		});
+		searchField.addActionListener(e -> search(1));
 		new TextStandardActions(searchField);
 		add(searchField);
 
 		JButton prevButton = new JButton(NLS.str("search.previous"));
 		prevButton.setIcon(ICON_UP);
-		prevButton.addActionListener(new ActionListener() {
-			@Override
-			public void actionPerformed(ActionEvent e) {
-				search(-1);
-			}
-		});
+		prevButton.addActionListener(e -> search(-1));
 		prevButton.setBorderPainted(false);
 		add(prevButton);
 
 		JButton nextButton = new JButton(NLS.str("search.next"));
 		nextButton.setIcon(ICON_DOWN);
-		nextButton.addActionListener(new ActionListener() {
-			@Override
-			public void actionPerformed(ActionEvent e) {
-				search(1);
-			}
-		});
+		nextButton.addActionListener(e -> search(1));
 		nextButton.setBorderPainted(false);
 		add(nextButton);
 
 		markAllCB = new JCheckBox(NLS.str("search.mark_all"));
-		markAllCB.addActionListener(new ForwardListener());
+		markAllCB.addActionListener(forwardListener);
 		add(markAllCB);
 
 		regexCB = new JCheckBox(NLS.str("search.regex"));
-		regexCB.addActionListener(new ForwardListener());
+		regexCB.addActionListener(forwardListener);
 		add(regexCB);
 
 		matchCaseCB = new JCheckBox(NLS.str("search.match_case"));
-		matchCaseCB.addActionListener(new ForwardListener());
+		matchCaseCB.addActionListener(forwardListener);
 		add(matchCaseCB);
 
 		wholeWordCB = new JCheckBox(NLS.str("search.whole_word"));
-		wholeWordCB.addActionListener(new ForwardListener());
+		wholeWordCB.addActionListener(forwardListener);
 		add(wholeWordCB);
 
 		JButton closeButton = new JButton();
 		closeButton.setIcon(ICON_CLOSE);
-		closeButton.addActionListener(l -> toggle());
+		closeButton.addActionListener(e -> toggle());
 		closeButton.setBorderPainted(false);
 		add(closeButton);
 
@@ -181,11 +167,4 @@ class SearchBar extends JToolBar {
 			searchField.setBackground(COLOR_BG_NORMAL);
 		}
 	}
-
-	private class ForwardListener implements ActionListener {
-		@Override
-		public void actionPerformed(ActionEvent e) {
-			search(0);
-		}
-	}
 }