import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

//create a reverse programe using java swing

class sample extends JFrame implements ActionListener{
	JLabel label1, label2, label3;
	JTextField text1, text2;
	JButton btn1, btn2;
	Container panel;

		sample() {
		panel=getContentPane();
		panel.setBackground(Color.LIGHT_GRAY);

		label1 = new JLabel ("Welcome to Reverse String!");
		label2 = new JLabel("Enter any String");
		label3 = new JLabel("Answer");

		text1 = new JTextField(20);
		text2 = new JTextField(20);

		btn1 = new JButton("Check");
		btn1.addActionListener(this);
		btn2 = new JButton("Exit");
		btn2.addActionListener(this);

		panel.add(label1);
		panel.add(label2);
		panel.add(text1);
		panel.add(label3);
		panel.add(text2);
		panel.add(btn1);
		panel.add(btn2);
		panel.setLayout(new FlowLayout());
		}
		public void actionPerformed(ActionEvent e)
		{
			String str=e.getActionCommand();
			if(str=="Check") {
			String str1 = text1.getText();
			String reverse = "";
			for (int i = str1.length()-1;i>=0;i--)
			{
				reverse = reverse + str1.charAt(i);
			}
				text2.setText(reverse);
			}
			if(str=="Exit") {
				System.exit(0);
			}
		}

}
class ReverseSwing
{

    public static void main(String args[])
    {
    	sample frame = new sample();

		frame.setVisible(true);
		frame.setTitle("Reverse String");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(250,300);
		frame.setLocationRelativeTo(null);
	}

}