Tugas 10 PBO-C "Text Editor"

    Pada kesempatan kali ini saya akan membikin sebuah Text Editor simpel dengan memakai bahasa Java. Text Editor merupakan suatu tipe program komputer yang bisa kita pakai untuk membuat, mengganti, menyimpan, serta membuka dokumen- dokumen teks. 

    Text Editor umumnya telah disediakan pada sistem operasi serta paket- paket pengembangan perangkat lunak. Text Editor bisa digunakan buat mengubah file semacam file konfigurasi, file dokumen, serta file kode sumber dari bahasa pemrograman. 

• Sourcecode TextEditor:

  import java.awt.*;
  import javax.swing.*;
  import java.io.*;
  import java.awt.event.*;
  import javax.swing.plaf.metal.*;
  import javax.swing.text.*;
   
  public class TextEditor extends JFrame implements ActionListener
  {
      // Text component
     
      JTextArea t;
     
      // Frame
     
      JFrame f;
     
      // Constructor
     
      TextEditor()
      {
          // Create a frame
         
          f = new JFrame("Text Editor");
         
          try
          {
              // Set metal look and feel
             
              UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
             
              // Set theme to ocean
             
              MetalLookAndFeel.setCurrentTheme(new OceanTheme());
          } catch (Exception e) {
             
          }
         
          // Text component
         
          t = new JTextArea();
         
          // Create a menubar
         
          JMenuBar mb = new JMenuBar();
         
          // Create a menu for menu
         
          JMenu m1 = new JMenu("File");
         
          // Create menu items
         
          JMenuItem mi1 = new JMenuItem("New");
          JMenuItem mi2 = new JMenuItem("Open");
          JMenuItem mi3 = new JMenuItem("Save");
          JMenuItem mi9 = new JMenuItem("Print");
         
          // Add action listener
         
          mi1.addActionListener(this);
          mi2.addActionListener(this);
          mi3.addActionListener(this);
          mi9.addActionListener(this);
         
          m1.add(mi1);
          m1.add(mi2);
          m1.add(mi3);
          m1.add(mi9);
         
          // Create a menu for menu
         
          JMenu m2 = new JMenu("Edit");
         
          // Create menu items
         
          JMenuItem mi4 = new JMenuItem("Cut");
          JMenuItem mi5 = new JMenuItem("Copy");
          JMenuItem mi6 = new JMenuItem("Paste");
         
          // Add action listener
         
          mi4.addActionListener(this);
          mi5.addActionListener(this);
          mi6.addActionListener(this);
         
          m2.add(mi4);
          m2.add(mi5);
          m2.add(mi6);
         
          JMenuItem mc = new JMenuItem("Close");
         
          mc.addActionListener(this);
         
          mb.add(m1);
          mb.add(m2);
          mb.add(mc);
         
          f.setJMenuBar(mb);
          f.add(t);
          f.setSize(500, 500);
          f.show();
      }
     
      public void actionPerformed(ActionEvent e)
      {
          String s = e.getActionCommand().toLowerCase();
         
          if (s.equals("cut"))
          {
              t.cut();
          } else if (s.equals("copy")) {
              t.copy();
          } else if (s.equals("paste")) {
              t.paste();
          } else if (s.equals("save")) {
              // Create an object of JFileChooser class
             
              JFileChooser j = new JFileChooser("c:");
             
              // Invoke the showSaveDialog function to show the save dialog
             
              int r = j.showSaveDialog(null);
             
              if (r == JFileChooser.APPROVE_OPTION) {
                  // Set the label to the path of the selected directory
                 
                  File fi = new File(j.getSelectedFile().getAbsolutePath());
                 
                  try
                  {
                      // Create a file writer
                     
                      FileWriter wr = new FileWriter(fi, false);
                     
                      // Create buffered writer to write
                     
                      BufferedWriter w = new BufferedWriter(wr);
                     
                      // Write
                     
                      w.write(t.getText());
                     
                      w.flush();
                      w.close();
                  } catch (Exception evt) {
                      JOptionPane.showMessageDialog(f, evt.getMessage());
                  }
              } else JOptionPane.showMessageDialog(f, "The user cancelled the operation"); // If the user cancelled the operation
          } else if (s.equals("print")) {
              try {
                  // Print the file
                 
                  t.print();
              } catch (Exception evt) {
                  JOptionPane.showMessageDialog(f, evt.getMessage());
              }
          } else if (s.equals("open")) {
              // Create an object of JFileChooser class
             
              JFileChooser j = new JFileChooser("c:");
             
              // Invoke the showOpenDialog function to show the open dialog
             
              int r = j.showOpenDialog(null);
             
              // If the user selects a file
             
              if (r == JFileChooser.APPROVE_OPTION)
              {
                  // Set the label to the path of the selected directory
                 
                  File fi = new File(j.getSelectedFile().getAbsolutePath());
                 
                  try
                  {
                      // String
                     
                      String s1 = "", sl = "";
                     
                      // File reader
                     
                      FileReader fr = new FileReader(fi);
                     
                      // Buffered reader
                     
                      BufferedReader br = new BufferedReader(fr);
                     
                      // Initialize sl
                     
                      sl = br.readLine();
                     
                      // Take the input from the file
                     
                      while ((s1 = br.readLine()) != null)
                      {
                          sl = sl + "\n" + s1;
                      }
                     
                      // Set the text
                     
                      t.setText(sl);
                  } catch (Exception evt) {
                      JOptionPane.showMessageDialog(f, evt.getMessage());
                  }
              } else JOptionPane.showMessageDialog(f, "The user cancelled the operation"); // If the user cancelled the operation
          } else if (s.equals("new")) {
              t.setText("");
          } else if (s.equals("close")) {
              f.setVisible(false);
          }
      }
     
      public static void main(String[] args)
      {
          TextEditor te = new TextEditor();
      }
  }
  

Screenshot akhir program ketika dijalankan:

Terima kasih telah berkunjung. Mohon maaf apabila ada kesalahan dalam penulisan. 😁👍