Java/nextprevswing at lab-cycle · Ashil10/Java · GitHub

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import java.util.*;
import java.io.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
class prnext extends JFrame implements ActionListener
{JTextField jtprv;JTextField jtnext;JTextField jtcurr;JLabel jlcurr,jlprv,jlnext;
JButton jb1,jb2;
	prnext()
	{	setLayout(null);
		jlcurr=new JLabel("Enter the number");
		jlcurr.setBounds(200,200,150,30);
		jtcurr=new JTextField();
		jtcurr.setBounds(350,200,50,30);
		add(jtcurr);
		add(jlcurr);
		jtnext=new JTextField();
		add(jtnext);
		jlnext=new JLabel("Next Number");
		add(jlnext);
		jlnext.setBounds(200,300,150,30);
		jtnext.setBounds(350,300,50,30);
		jtprv=new JTextField();
		add(jtprv);
		jlprv=new JLabel("Previous Number");
		jlprv.setBounds(200,400,150,30);
		jtprv.setBounds(350,400,50,30);
		add(jlprv);
		setVisible(true);
		setSize(600,600);
		jb1=new JButton("OK");
		add(jb1);
		jb2=new JButton("CANCEL");
		add(jb2);
		jb1.setBounds(200,500,100,50);
		jb1.addActionListener(this);
		jb2.setBounds(300,500,100,50);
		jb2.addActionListener(this);
	}
	public void  actionPerformed(ActionEvent a)
	{
	if(a.getSource()==jb1)
	{
		String s=jtcurr.getText();
		int n=Integer.parseInt(s);
		int next=n+1;
		int prev=n-1;
		jtnext.setText(String.valueOf(next));
		jtprv.setText(String.valueOf(prev));
	}	else
	{
		jtprv.setText("");
		jtnext.setText("");
		jtcurr.setText("");
	}

	}
}
public class prevnext {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		prnext ob=new prnext();
	}

}