compilation error

compilation error

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

class BLayout implements ActionListener
{
JFrame f ;
JPanel jp;
JButton b[];
CardLayout cl;

BLayout(String s)
{
jp = new JPanel();

cl = new CardLayout();
jp.setLayout(cl);
f = new JFrame("Swing");
b = new JButton[20];

String s1[] = {"north","south","east","west","center"};
String x[] = {BorderLayout.NORTH,BorderLayout.SOUTH,BorderLayout.WEST,BorderLayout.CENTER};

for(int i = 0 ; i<b.length;i++)
{
b[i] = new JButton(s1[i]);
b[i].addActionListener(this);
jp.add(b[i],x[i]);

f.add(jp);

f.setLayout(cl);
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.setSize(400,400);
//f.pack
f.setVisible(true);
}
public void actionPerformed(ActionEvent e)
{
cl.next(jp);
}
public static void main(String ...s)
{
new BLayout("second frame");
new BLayout("second frame");
}
}



** compilation error on OUT OF BOUND ARRAY INDEX....
View Answers

August 4, 2010 at 1:36 PM

Hi Friend,

Try the following code:

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

class BLayout implements ActionListener
{
JFrame f ;
JPanel jp;
JButton b[];
CardLayout cl;

BLayout(String s)
{
jp = new JPanel();

cl = new CardLayout();
jp.setLayout(cl);
f = new JFrame("Swing");
b = new JButton[5];

String s1[] = {"north","south","east","west","center"};
String x[] = {BorderLayout.NORTH,BorderLayout.SOUTH,BorderLayout.EAST,BorderLayout.WEST,BorderLayout.CENTER};

for(int i = 0 ; i<b.length;i++)
{
b[i] = new JButton(s1[i]);
b[i].addActionListener(this);
jp.add(b[i],x[i]);
}
f.add(jp);
f.setLayout(cl);
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.setSize(400,400);
f.setVisible(true);

}
public void actionPerformed(ActionEvent e)
{
cl.next(jp);
}
public static void main(String ...s)
{
new BLayout("second frame");
}
}

Thanks









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