TY_BCS_JAVA_SLIP 6_1

Slip 6_1. Write a program to accept a decimal number in the Textfield. After clicking calculate button, program should display the binary, octal, hexadecimal equivalent for the entered decimal  number. 

import java.awt.*;

import java.awt.event.*;

public class Slip6_1 extends Frame implements ActionListener

{

                Label labelD, labelB, labelO,labelH;

                                TextField  txtNo, txtB, txtO,txtH;

                                Button  cal ,clear;

                                Panel p;

                               

                                public Slip6_1()

                                {

                                                labelD= new Label("Decimal No:");

                                                                labelB = new Label("Binary No : ");

                                                                labelO = new Label("Octal No :");

                                                                labelH = new Label("Hexadecimal No :");

                                               

                                                                txtNo = new TextField(10);

                                                                txtB = new TextField(10);

                                                                txtO = new TextField(10);

                                                                txtH = new TextField(10);

                                               

                                                                cal = new Button("Calculate");

                                                                clear = new Button("Clear");

                                                               

                                                                p = new Panel();

                                                                p.setLayout(new GrideLayout(5,2));

                                                                p.add(labelD);

                                                                p.add(txtNo);

                                                                p.add(labelB);

                                                                p.add(txtB);

                                                                p.add(labelO);

                                                                p.add(txtO);

                                                                p.add(labelH);

                                                                p.add(txtH);

                                                p.add(cal);

                                                p.add(clear);

                                                               

                                                                setLayout(new FlowLayout());

                                                                add(p);

                                                                setTitle("Binary Calculator");

                                                                setSize(300,300);

                                                                setVisible(true);

                                                               

                                                                cal.addActionListener(this);

                                                                clear.addActionListener(this);

                                }

               

                               

                                public void actionPerformed(ActionEvent ae)

                                {

                                                Button btn = (Button)ae.getSource();

                                                if(btn == cal)

                                                {

                                                                int n = Integer.parseInt(txtNo.getText());

                                                                txtB.setText(Integer.toBinaryString(n));

                                                                txtO.setText(Integer.toOctalString(n));

                                                                txtH.setText(Integer.toHexString(n));

                                                }

                                               

                                                                if(btn == clear)

                                                                {

                                                                                txtNo.setText("");

                                                                                                txtB.setText("");

                                                                                                txtO.setText("");

                                                                                                txtH.setText("");

                                                                }

                                }

               

                                public static void main(String args[])

                                {

                                                new Slip6_1();

                                }

}