import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
// user defined type where we put name
class riot2{
private String name;
public riot2(String _name){
name = _name;
}
public String toString(){
return name;
}
}
public class finalriot2 extends JFrame{
Container c = getContentPane();
private Stack sstack; // built in stack of java.util
private JLabel lName;
private JTextField fName;
private JTextArea outputArea;
private JButton bAdd, bRemove, bSearch, bEmpty;
private FileOutputStream fout; // used for file output
private FileInputStream fin; // used for file input
public finalriot2() throws IOException{
// title
super("Stack(LIFO)");
sstack = new Stack();
try{
// if A file already exist and have some data read it
fin = new FileInputStream("Data.dat");
BufferedReader br = new BufferedReader(new InputStreamReader(fin));
String sName = br.readLine();
String sMobile = br.readLine();
String sEmail = br.readLine();
while (sName != null){
// Read from file and store them in linked List's object
sstack.add(new riot2(sName));
sName = br.readLine();
}
fin.close();
}
catch(Exception err){
// if no file create a new file
fout = new FileOutputStream("Data.dat");
}
lName.setBounds(128,34,100,65);
// set graphical user interface
Container c = getContentPane();
c.setLayout(new FlowLayout());
lName.setBounds(128,34,100,65);
lName = new JLabel("Enter a String");
c.add(lName);
fName = new JTextField(20);
c.add(fName);
bAdd = new JButton("Push");
c.add(bAdd);
bAdd.addActionListener( // add event
new ActionListener(){
public void actionPerformed(ActionEvent e){
StringBuffer str = new StringBuffer();
str.append(fName.getText());
lName.setText( sstack.push(fName.getText()) + "" );
// if name field is empty
if (str.length() == 1){
JOptionPane.showMessageDialog(null, "Name Field must be initialized", "Info", JOptionPane.INFORMATION_MESSAGE);
return; // if name field empty
}
update(); // show final result to outputArea
diskFileUpdate(); // store information to disk
}
}
);
bRemove = new JButton("Pop");
c.add(bRemove);
bRemove.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e){
StringBuffer str = new StringBuffer();
str.append(fName.getText());
try{
outputArea.setText("Popped:" );
} catch (EmptyStackException exception){
outputArea.setText(exception.toString());
}
update(); // show final result to outputArea
diskFileUpdate(); // store information to disk
}
}
);
bSearch = new JButton("Peek");
c.add(bSearch);
bSearch.addActionListener( // add event
new ActionListener(){
public void actionPerformed(ActionEvent e){
StringBuffer str = new StringBuffer();
str.append(fName.getText());
try{
outputArea.setText("Top:" + sstack.peek());
}
catch (EmptyStackException exception){
outputArea.setText(exception.toString());
}
}
}
);
bEmpty = new JButton("Is Empty?");
c.add(bEmpty);
bSearch.addActionListener( // add event
new ActionListener(){
public void actionPerformed(ActionEvent e){
String searchKey = fName.getText();
int result = sstack.search(searchKey);
if(result == -1)
outputArea.setText(searchKey + " not found");
else
outputArea.setText(searchKey + " found at element " + result);
}
}
);
// show the data to outputArea
outputArea = new JTextArea(20, 40);
outputArea.setEditable(false);
c.add(new JScrollPane(outputArea));
setSize(1000,500);
setVisible(true);
}
private void update(){
// I used Iterator to access stack's object
Iterator it = sstack.iterator();
String out=" "; // it used for collecting all members
int count = 0;
while (it.hasNext()){
Object element = it.next();
out += "\n" + count + "";
out += " ";
out += element.toString();
++count;
}
outputArea.setText(out);
}
private void diskFileUpdate(){
try{
// store to disk file
fout = new FileOutputStream("Data.dat");
// StringBuffer used to access every character
StringBuffer out = new StringBuffer("");
char c;
Iterator it = sstack.iterator();
while (it.hasNext()){
Object element = it.next();
out.append(element.toString());
}
// write file every character by character
for (int i = 0; i < out.length(); ++i){
c = out.charAt(i);
fout.write(c);
}
fout.close();
}
catch(Exception err){
JOptionPane.showMessageDialog(null, "Error Caught: " + err, "Error", JOptionPane.ERROR_MESSAGE);
}
}
public static void main(String args[]){
try{
finalriot window = new finalriot();
window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
catch(Exception e){
JOptionPane.showMessageDialog(null, "Error" + e, "Error", JOptionPane.ERROR_MESSAGE);
}
}
}
vampshay 0 Newbie Poster
stultuske 1,116 Posting Maven Featured Poster
firstly, use Code tags, make your post readable.
secondly: what exactly do you mean, output your JButton in a JTextField??
describe what you want it to do and what it is(n't) doing
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