ArrayList

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;


public class ArrayTest extends JFrame
{
JTextField txtAdd=new JTextField(35);
JButton btnAdd=new JButton("Add");
JButton btnSize=new JButton("Size");
JButton btnFirst=new JButton("First");
JButton btnLast=new JButton("Last");
JButton btnFind=new JButton("Find");
JButton btnRemove=new JButton("Remove");
JButton btnShowAll=new JButton("Show All");

//Vector vector=new Vector();
ArrayList<String> arfray=new ArrayList<String>();


public ArrayTest()
{
Container c=getContentPane();
c.setLayout(new FlowLayout());
c.add(txtAdd);
c.add(btnAdd);
c.add(btnSize);
c.add(btnFirst);
c.add(btnLast);
c.add(btnFind);
c.add(btnRemove);
c.add(btnShowAll);

setBounds(100,150,500,150);
setVisible(true);
setResizable(false);
setTitle("Vector");

txtAdd.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
btnAdd.doClick();
}
});

btnAdd.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
vector.add(txtAdd.getText());
txtAdd.setText("");
txtAdd.requestFocus();
}
});

btnSize.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
JOptionPane.showMessageDialog(null,"Vector size: "+vector.size());
}
});

btnFirst.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
JOptionPane.showMessageDialog(null,"First Element: "+vector.firstElement());
}
});

btnLast.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
JOptionPane.showMessageDialog(null,"Last Element: "+vector.lastElement());
}
});

btnFind.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
String input=JOptionPane.showInputDialog("What to find?");

if(vector.contains(input))
JOptionPane.showMessageDialog(null,input+" exists in the vector.");

else

JOptionPane.showMessageDialog(null, input+" does not exist in the vector.");
}
});

btnRemove.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
String input=JOptionPane.showInputDialog("What to remove?");

vector.remove(input);
}
});

btnShowAll.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent ae)
{
String all="";
for(int i=0;i<vector.size();i++)
{
all=all+vector.get(i).toString()+"\n";
}
JOptionPane.showMessageDialog(null,all);
}
});
}

public static void main(String args[])
{
new ArrayTest();
}
}