We are providing you a program that will store java swing form data into word file using POI API.

import java.io.*;
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.usermodel.*;
import org.apache.poi.hwpf.usermodel.Range;
import org.apache.poi.poifs.filesystem.*;
class Form extends JFrame{

JButton ADD;
JPanel panel,pan;
JLabel label1,label2,label3,label4;
final JTextField text1,text2,text3,text4;
Form() {
label1 = new JLabel();
label1.setText("Student Id:");
text1 = new JTextField(20);

label2 = new JLabel();
label2.setText("Name:");
text2 = new JTextField(20);

label3 = new JLabel();
label3.setText("Address:");
text3 = new JTextField(20);

label4 = new JLabel();
label4.setText("City:");
text4 = new JTextField(20);
ADD=new JButton("Add");

panel=new JPanel(new GridLayout(5,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(label3);
panel.add(text3);
panel.add(label4);
panel.add(text4);
panel.add(ADD);
add(panel,BorderLayout.CENTER);
setTitle("FORM");

ADD.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){
String data="STUDENT ADMISSION FORM\n\n\nSTUDENT ID: "+text1.getText()+"\nNAME: "+text2.getText()+"\nADDRESS: "+text3.getText()+"\nCITY: "+text4.getText();
writeToFile(data, "Employee.doc");
try{
Runtime rt = Runtime.getRuntime();
rt.exec("cmd.exe /C start Employee.doc");
}
catch(Exception e){}
}
});
}
private static void writeToFile(String content, String path) {
try{
POIFSFileSystem fs = new POIFSFileSystem();
DirectoryEntry directory = fs.getRoot();
directory.createDocument("WordDocument", new ByteArrayInputStream(content.getBytes()));
FileOutputStream out = new FileOutputStream(path);

fs.writeFilesystem(out);
out.close();
}
catch(Exception ex){
System.out.println(ex.getMessage());
}
}
}
class InsertToFile{
public static void main(String arg[]) {
try
{
Form frame=new Form();
frame.setSize(300,300);
frame.setVisible(true);
}
catch(Exception e)
{}
}
}

Hope that it will be helpful for you.