Notepad Code in Swing:-
package awtexample;
import java.io.*;
import javax.swing.JFileChooser;
/**
*
* @author Hp
*/
public class Notepad extends javax.swing.JFrame {
/**
* Creates new form Notepad
*/
public Notepad() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jCheckBoxMenuItem1 = new javax.swing.JCheckBoxMenuItem();
jCheckBoxMenuItem2 = new javax.swing.JCheckBoxMenuItem();
jCheckBoxMenuItem4 = new javax.swing.JCheckBoxMenuItem();
jCheckBoxMenuItem5 = new javax.swing.JCheckBoxMenuItem();
jCheckBoxMenuItem3 = new javax.swing.JCheckBoxMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenuItem2 = new javax.swing.JMenuItem();
jMenuItem1 = new javax.swing.JMenuItem();
jMenuItem3 = new javax.swing.JMenuItem();
jMenuItem4 = new javax.swing.JMenuItem();
jMenu3 = new javax.swing.JMenu();
jMenu4 = new javax.swing.JMenu();
jMenu5 = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);
jMenu1.setText("File");
jMenu1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu1ActionPerformed(evt);
}
});
jCheckBoxMenuItem1.setSelected(true);
jCheckBoxMenuItem1.setText("New");
jMenu1.add(jCheckBoxMenuItem1);
jCheckBoxMenuItem2.setSelected(true);
jCheckBoxMenuItem2.setText("Open");
jCheckBoxMenuItem2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jCheckBoxMenuItem2ActionPerformed(evt);
}
});
jMenu1.add(jCheckBoxMenuItem2);
jCheckBoxMenuItem4.setSelected(true);
jCheckBoxMenuItem4.setText("Save");
jCheckBoxMenuItem4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jCheckBoxMenuItem4ActionPerformed(evt);
}
});
jMenu1.add(jCheckBoxMenuItem4);
jCheckBoxMenuItem5.setSelected(true);
jCheckBoxMenuItem5.setText("Save As");
jMenu1.add(jCheckBoxMenuItem5);
jCheckBoxMenuItem3.setSelected(true);
jCheckBoxMenuItem3.setText("Print");
jMenu1.add(jCheckBoxMenuItem3);
jMenuBar1.add(jMenu1);
jMenu2.setText("Edit");
jMenuItem2.setText("Cut");
jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem2ActionPerformed(evt);
}
});
jMenu2.add(jMenuItem2);
jMenuItem1.setText("Copy");
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
}
});
jMenu2.add(jMenuItem1);
jMenuItem3.setText("Paste");
jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem3ActionPerformed(evt);
}
});
jMenu2.add(jMenuItem3);
jMenuItem4.setText("Select All");
jMenuItem4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem4ActionPerformed(evt);
}
});
jMenu2.add(jMenuItem4);
jMenuBar1.add(jMenu2);
jMenu3.setText("View");
jMenuBar1.add(jMenu3);
jMenu4.setText("Format");
jMenuBar1.add(jMenu4);
jMenu5.setText("Help");
jMenuBar1.add(jMenu5);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 1102, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 581, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextArea1.setText("");
}
private void jCheckBoxMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {
try
{
JFileChooser jf = new JFileChooser();
jf.showSaveDialog(this);
File f = new File(jf.getSelectedFile().toString());
FileReader fw = new FileReader(f);
BufferedReader bw = new BufferedReader(fw);
String s="";
String s1="";
while((s1=bw.readLine())!=null)
{
s+=s1;
}
jTextArea1.setText(s);
bw.close();
}
catch(Exception ex)
{
}
}
private void jCheckBoxMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {
try
{
JFileChooser jf = new JFileChooser();
jf.showSaveDialog(this);
File f = new File(jf.getSelectedFile().toString());
FileWriter fw = new FileWriter(f);
BufferedWriter bw = new BufferedWriter(fw);
bw.write(jTextArea1.getText());
bw.close();
}
catch(Exception ex)
{
}
}
private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextArea1.cut();
}
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextArea1.copy();
}
private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextArea1.paste();
}
private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextArea1.selectAll();
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Notepad.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Notepad.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Notepad.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Notepad.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Notepad().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JCheckBoxMenuItem jCheckBoxMenuItem1;
private javax.swing.JCheckBoxMenuItem jCheckBoxMenuItem2;
private javax.swing.JCheckBoxMenuItem jCheckBoxMenuItem3;
private javax.swing.JCheckBoxMenuItem jCheckBoxMenuItem4;
private javax.swing.JCheckBoxMenuItem jCheckBoxMenuItem5;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenu jMenu3;
private javax.swing.JMenu jMenu4;
private javax.swing.JMenu jMenu5;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
private javax.swing.JMenuItem jMenuItem2;
private javax.swing.JMenuItem jMenuItem3;
private javax.swing.JMenuItem jMenuItem4;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
// End of variables declaration
}
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