P6-P15: init

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

P10.java

@@ -0,0 +1,85 @@
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.io.*;
+
+public class P10 extends JFrame {
+    private JTextArea textArea;
+    private JFileChooser fileChooser;
+
+    public P10() {
+        setTitle("Swing Text Editor");
+        setSize(800, 600);
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        setLocationRelativeTo(null);
+
+        textArea = new JTextArea();
+        JScrollPane scrollPane = new JScrollPane(textArea);
+        add(scrollPane, BorderLayout.CENTER);
+
+        fileChooser = new JFileChooser();
+
+        JMenuBar menuBar = new JMenuBar();
+        JMenu fileMenu = new JMenu("File");
+        JMenuItem openMenuItem = new JMenuItem("Open");
+        JMenuItem saveMenuItem = new JMenuItem("Save");
+        JMenuItem exitMenuItem = new JMenuItem("Exit");
+
+        openMenuItem.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                int returnVal = fileChooser.showOpenDialog(P10.this);
+                if (returnVal == JFileChooser.APPROVE_OPTION) {
+                    File file = fileChooser.getSelectedFile();
+                    try {
+                        BufferedReader reader = new BufferedReader(new FileReader(file));
+                        textArea.read(reader, null);
+                        reader.close();
+                    } catch (IOException ex) {
+                        ex.printStackTrace();
+                    }
+                }
+            }
+        });
+
+        saveMenuItem.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                int returnVal = fileChooser.showSaveDialog(P10.this);
+                if (returnVal == JFileChooser.APPROVE_OPTION) {
+                    File file = fileChooser.getSelectedFile();
+                    try {
+                        BufferedWriter writer = new BufferedWriter(new FileWriter(file));
+                        textArea.write(writer);
+                        writer.close();
+                    } catch (IOException ex) {
+                        ex.printStackTrace();
+                    }
+                }
+            }
+        });
+
+        exitMenuItem.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                System.exit(0);
+            }
+        });
+
+        fileMenu.add(openMenuItem);
+        fileMenu.add(saveMenuItem);
+        fileMenu.add(exitMenuItem);
+        menuBar.add(fileMenu);
+        setJMenuBar(menuBar);
+    }
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                P10 editor = new P10();
+                editor.setVisible(true);
+            }
+        });
+    }
+}