Add a word

/*
Add class of Dictionary.java
*/
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Add extends JFrame implements ActionListener
{
JTextField word,meaning;
JLabel wordLabel,meaningLabel;
JButton add,back;
FileWriter fw;
BufferedWriter bw;
PrintWriter pw;
public Add()
{
super("Dictionary");
word=new JTextField(20);
meaning=new JTextField(20);
/*meaning.setLineWrap(true);
meaning.setWrapStyleWord(true);
JScrollPane meaningScrollPane = new JScrollPane(meaning);
meaningScrollPane.setVerticalScrollBarPolicy(
        JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
meaningScrollPane.setPreferredSize(new Dimension(250, 250));*/
wordLabel=new JLabel("Word");
meaningLabel=new JLabel("Meaning");
add=new JButton("Add");
add.setActionCommand("Add");
add.addActionListener(this);
back=new JButton("Back");
back.setActionCommand("Back");
back.addActionListener(this);

GridBagLayout gbag=new GridBagLayout();
GridBagConstraints gbc = new GridBagConstraints();
setLayout(gbag);

gbc.weightx = 0.0; // use a column weight of 1
gbc.ipadx = 5; // pad by 5 units
gbc.insets = new Insets(4, 4, 0, 0); //inset slightly from top left
gbc.anchor = GridBagConstraints.CENTER;
gbc.gridwidth = GridBagConstraints.RELATIVE;
gbag.setConstraints(wordLabel, gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;
gbag.setConstraints(word, gbc);

gbc.weighty = 0.0;
gbc.weightx = 0.0;
gbc.gridwidth = GridBagConstraints.RELATIVE;
gbag.setConstraints(meaningLabel,gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;
gbag.setConstraints(meaning,gbc);


gbc.weightx = 0.0;
gbc.weighty = 0.0;
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbag.setConstraints(add,gbc);

gbc.gridwidth = GridBagConstraints.REMAINDER;
gbag.setConstraints(back,gbc);



add(wordLabel);
add(word);
add(meaningLabel);
add(meaning);

add(add);
add(back);

setSize(400, 400);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void actionPerformed(ActionEvent ae)
{
if((ae.getActionCommand()).equals("Back"))
{
setVisible(false);
new Dictionary();
}
else if((ae.getActionCommand()).equals("Add"))
{

boolean b=write(word.getText(),meaning.getText());
if(!(b))
{
JOptionPane.showMessageDialog(this,"Error writing to the file","Inane error",
JOptionPane.ERROR_MESSAGE);
}
word.setText("");
meaning.setText("");

}
}
public boolean write(String w,String m)
{
if(!(isExisting(w,m)))
{
try
{
fw=new FileWriter("Data.txt",true);
bw=new BufferedWriter(fw);
pw=new PrintWriter(bw);
pw.println(w+":"+m);
pw.close();
bw.close();
fw.close();
}
catch(IOException e)
{
return false;
}
}

return true;
}
boolean isExisting(String wo,String me)
{
FileReader fre;
BufferedReader bre;
try
{
fre=new FileReader("Data.txt");
bre=new BufferedReader(fre);
}
catch(Exception e)
{
return false;
}
boolean existing=false;
String s;
String s2[]=new String[2];
try
{
while((s=bre.readLine())!=null)
{
s2=s.split(":");
if(wo.equalsIgnoreCase(s2[0]) && me.equalsIgnoreCase(s2[1]))
{
existing=true;
}
}
}
catch(IOException e)
{
return false;
}
return existing;
}
}