import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class AppendIntoFile {

JPanel panel;
JFrame jf;
JLabel label1,label2;
JButton Append;
JTextField textfield1,textfield2,textfield3;
JPasswordField passwordfield;
JTextArea textArea1;
public AppendIntoFile() {
initComponents();
handlingEvents();
}

public void initComponents() {
jf=new javax.swing.JFrame();
jf.setTitle("Data From File");
jf.setLayout(null);
jf.setSize(800,500);
jf.show();
jf.setVisible(true);

JScrollPane scrollBar=new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
jf.add(scrollBar);
label1=new javax.swing.JLabel("Filename");
label1.setFont(new Font("Monotype Corsiva", Font.BOLD, 24));
label1.setBounds(50,80,200,40);
jf.add(label1);
textfield1=new javax.swing.JTextField();
textfield1.setFont(new Font("Monotype Corsiva", Font.BOLD, 18));
textfield1.setBounds(250,80,200,30);
jf.add(textfield1);
textArea1=new javax.swing.JTextArea();
textArea1.setFont(new Font("Monotype Corsiva", Font.BOLD, 18));
textArea1.setLineWrap(true);
textArea1.setWrapStyleWord(true);
JScrollPane scrollBar1=new JScrollPane(textArea1,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
scrollBar1.setBounds(250,120,200,200);
jf.add(scrollBar1);
Append=new javax.swing.JButton("Append");
Append.setFont(new Font("Monotype Corsiva", Font.BOLD, 24));
Append.setBounds(270,350,140,30);
jf.add(Append);
}
public void handlingEvents() {
Append.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
try {
String filename = textfield1.getText();
String content = textArea1.getText();
FileWriter fw = new FileWriter(filename,true);
BufferedWriter bw = new BufferedWriter(fw);
bw.write(content);
bw.close();
fw.close();
JOptionPane.showMessageDialog(null,"Text is append into the file "+filename);

}
catch(Exception e) {
System.out.println(e);
}
}
});
}
public static void main(String args[]) {
AppendIntoFile ap = new AppendIntoFile();
}
}