<- isi file kosong
isi file - >
panjang
Menyimpan file- >
<- Membuka file
Kodingan:
package lf13;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;
import java.util.Vector;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.filechooser.FileNameExtensionFilter;
/**
*
* @author Kevin
*/
public class JFrame13 extends javax.swing.JFrame {
/**
* Creates new form JFrame13
*/
public JFrame13() {
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() {
jFileChooser1 = new javax.swing.JFileChooser();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenuItem2 = new javax.swing.JMenuItem();
jMenuItem5 = new javax.swing.JMenuItem();
jMenuItem3 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
jMenuItem4 = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("LP13 -Kevin Setiawan 5213100108-");
jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jTextArea1.setWrapStyleWord(true);
jScrollPane1.setViewportView(jTextArea1);
jMenu1.setText("File");
jMenu1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenu1ActionPerformed(evt);
}
});
jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_O, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem1.setText("Open");
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem1);
jMenuItem2.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_S, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem2.setText("Save");
jMenuItem2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem2ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem2);
jMenuItem5.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_W, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem5.setText("Wrap Text");
jMenuItem5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem5ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem5);
jMenuItem3.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_Q, java.awt.event.InputEvent.CTRL_MASK));
jMenuItem3.setText("Quit");
jMenuItem3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem3ActionPerformed(evt);
}
});
jMenu1.add(jMenuItem3);
jMenuBar1.add(jMenu1);
jMenu2.setText("Help");
jMenuItem4.setText("About");
jMenuItem4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem4ActionPerformed(evt);
}
});
jMenu2.add(jMenuItem4);
jMenuBar1.add(jMenu2);
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, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 279, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
JFileChooser chooser = new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter("Text Only", "txt");
chooser.setFileFilter(filter);
int returnVal = chooser.showOpenDialog(new JFrame());
if (returnVal == JFileChooser.APPROVE_OPTION) {
this.jTextArea1.setText("");
try {
Scanner scan = new Scanner(new FileReader(chooser.getSelectedFile().getPath()));
while (scan.hasNext())
this.jTextArea1.append(scan.nextLine() + "\n");
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
}
private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {
FileWriter simpan=null;
int selectedOption = JOptionPane.showConfirmDialog(null, "Anda ingin menyimpan?", "Choose", JOptionPane.YES_NO_OPTION);
if (selectedOption == JOptionPane.YES_OPTION) {
try {
simpan=new FileWriter("C:\\Users\\Kevin\\Documents\\NetBeansProjects\\LF13\\lf13.txt");
jFileChooser1.setFileFilter(new FileNameExtensionFilter("Text (*.txt)", "txt"));
jTextArea1.write(simpan);
} catch (IOException exception) {
exception.printStackTrace();
}finally{
if (simpan !=null) {
try {
simpan.close();
} catch (IOException exception) {
exception.printStackTrace();
}
}
}
}else if(selectedOption == JOptionPane.NO_OPTION){}
}
private void jMenuItem3ActionPerformed(java.awt.event.ActionEvent evt) {
int selectedOption = JOptionPane.showConfirmDialog(null, "Do you wanna close the window?", "Choose", JOptionPane.YES_NO_OPTION);
if (selectedOption == JOptionPane.YES_OPTION) {
System.exit(0);
}else if(selectedOption == JOptionPane.NO_OPTION){}
}
private void jMenuItem4ActionPerformed(java.awt.event.ActionEvent evt) {
JOptionPane.showMessageDialog(this, "This note made by Kevin Setiawan -5213100108", "Message", JOptionPane.INFORMATION_MESSAGE);
}
private void jMenu1ActionPerformed(java.awt.event.ActionEvent evt) {
}
private void jMenuItem5ActionPerformed(java.awt.event.ActionEvent evt) {
jTextArea1.setLineWrap(true);
jTextArea1.setWrapStyleWord(true);
}
/**
* @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(JFrame13.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(JFrame13.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(JFrame13.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(JFrame13.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 JFrame13().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JFileChooser jFileChooser1;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
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.JMenuItem jMenuItem5;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
// End of variables declaration
}
Link Download:
LF13
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