Java text editor app 📓

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=NKjqAQAtq-g

Java text editor program app tutorial for beginners • #Java #text #editor #beginners #program #app #tutorial • public class Main { • public static void main(String[] args) { • • new TextEditor(); • } • } • import java.awt.*; • import java.awt.event.*; • import java.io.*; • import java.util.*; • import javax.swing.*; • import javax.swing.event.*; • import javax.swing.filechooser.*; • public class TextEditor extends JFrame implements ActionListener{ • JTextArea textArea; • JScrollPane scrollPane; • JLabel fontLabel; • JSpinner fontSizeSpinner; • JButton fontColorButton; • JComboBox fontBox; • • JMenuBar menuBar; • JMenu fileMenu; • JMenuItem openItem; • JMenuItem saveItem; • JMenuItem exitItem; • TextEditor(){ • this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); • this.setTitle( Bro text Editor ); • this.setSize(500, 500); • this.setLayout(new FlowLayout()); • this.setLocationRelativeTo(null); • • textArea = new JTextArea(); • textArea.setLineWrap(true); • textArea.setWrapStyleWord(true); • textArea.setFont(new Font( Arial ,Font.PLAIN,20)); • • scrollPane = new JScrollPane(textArea); • scrollPane.setPreferredSize(new Dimension(450,450)); • scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS); • • fontLabel = new JLabel( Font: ); • • fontSizeSpinner = new JSpinner(); • fontSizeSpinner.setPreferredSize(new Dimension(50,25)); • fontSizeSpinner.setValue(20); • fontSizeSpinner.addChangeListener(new ChangeListener() { • @Override • public void stateChanged(ChangeEvent e) { • • textArea.setFont(new Font(textArea.getFont().getFamily(),Font.PLAIN,(int) fontSizeSpinner.getValue())); • } • • }); • • fontColorButton = new JButton( Color ); • fontColorButton.addActionListener(this); • • String[] fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames(); • • fontBox = new JComboBox(fonts); • fontBox.addActionListener(this); • fontBox.setSelectedItem( Arial ); • • // ----- menubar ----- • • menuBar = new JMenuBar(); • fileMenu = new JMenu( File ); • openItem = new JMenuItem( Open ); • saveItem = new JMenuItem( Save ); • exitItem = new JMenuItem( Exit ); • • openItem.addActionListener(this); • saveItem.addActionListener(this); • exitItem.addActionListener(this); • • fileMenu.add(openItem); • fileMenu.add(saveItem); • fileMenu.add(exitItem); • menuBar.add(fileMenu); • • // ----- /menubar ----- • • this.setJMenuBar(menuBar); • this.add(fontLabel); • this.add(fontSizeSpinner); • this.add(fontColorButton); • this.add(fontBox); • this.add(scrollPane); • this.setVisible(true); • } • • @Override • public void actionPerformed(ActionEvent e) { • • if(e.getSource()==fontColorButton) { • JColorChooser colorChooser = new JColorChooser(); • • Color color = colorChooser.showDialog(null, Choose a color , Color.black); • • textArea.setForeground(color); • } • • if(e.getSource()==fontBox) { • textArea.setFont(new Font((String)fontBox.getSelectedItem(),Font.PLAIN,textArea.getFont().getSize())); • } • • if(e.getSource()==openItem) { • JFileChooser fileChooser = new JFileChooser(); • fileChooser.setCurrentDirectory(new File( . )); • FileNameExtensionFilter filter = new FileNameExtensionFilter( Text files , txt ); • fileChooser.setFileFilter(filter); • • int response = fileChooser.showOpenDialog(null); • • if(response == JFileChooser.APPROVE_OPTION) { • File file = new File(fileChooser.getSelectedFile().getAbsolutePath()); • Scanner fileIn = null; • • try { • fileIn = new Scanner(file); • if(file.isFile()) { • while(fileIn.hasNextLine()) { • String line = fileIn.nextLine()+ \ • ; • textArea.append(line); • } • } • } catch (FileNotFoundException e1) { • // TODO Auto-generated catch block • e1.printStackTrace(); • } • finally { • fileIn.close(); • } • } • } • if(e.getSource()==saveItem) { • JFileChooser fileChooser = new JFileChooser(); • fileChooser.setCurrentDirectory(new File( . )); • • int response = fileChooser.showSaveDialog(null); • • if(response == JFileChooser.APPROVE_OPTION) { • File file; • PrintWriter fileOut = null; • • file = new File(fileChooser.getSelectedFile().getAbsolutePath()); • try { • fileOut = new PrintWriter(file); • fileOut.println(textArea.getText()); • } • catch (FileNotFoundException e1) { • // TODO Auto-generated catch block • e1.printStackTrace(); • } • finally { • fileOut.close(); • } • } • } • if(e.getSource()==exitItem) { • System.exit(0); • } • } • }

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