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Aim: Design an application program for Mobile Phones

Resource Required: Wireless Toolkit/Net Beans/Eclipse, using J2ME/ n!roi!"

Theory:Example: #alculator

Design a simple calculator $ith four basic operations such as !!ition, %ubtraction,Multiplication,

an! !i&ision

Example:calcu.java

import javax.microedition.lcdui.*;

import javax.microedition.midlet.*;

import java.io.*;

public class calcu extends MIDlet implements CommandListener

{

private Form form;

private Display display;

private extField input!" input#;

private Command add" sub" mul"div;

private $trin%Item item;

public calcu&'

{ (

public void start)pp&' {

display Display.%etDisplay&t+is';

Form form ne, Form&-Calculator-';

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form.append&- ello everybody-';

item ne, $trin%Item&-/esult-" --';

input! ne, extField&-First 0umber1-" --" 23" extField.04M5/IC';

input# ne, extField&-$econd 0umber-" --" 23" extField.04M5/IC';

form.append&input!';

form.append&input#';

add ne, Command&-)ddition-" Command.67" !';

sub ne, Command&-$ubtraction-" Command.67" !';

mul ne, Command&-Multiplication-" Command.67" !';

div ne, Command&-Division-" Command.67" !'; form.addCommand&add';

form.addCommand&sub';

form.addCommand&mul';

form.addCommand&div';

form.append&item';

form.setCommandListener&t+is';

display.setCurrent&form';

(

public void pause)pp&' { (

public void destroy)pp&boolean uncondn' {

notifyDestroyed&';

(

private void calculate&'

{int one Inte%er.parseInt&input!.%et$trin%&'';

int t,o Inte%er.parseInt&input#.%et$trin%&'';

int result one8t,o;

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item.set ext& result 8 -- ';

(

private void calculate!&' {

int one Inte%er.parseInt&input!.%et$trin%&'';

int t,o Inte%er.parseInt&input#.%et$trin%&'';

int result one 9 t,o;

item.set ext&result 8 --';

(

private void calculate#&' { int one Inte%er.parseInt&input!.%et$trin%&'';

int t,o Inte%er.parseInt&input#.%et$trin%&'';

int result one * t,o;

item.set ext&result 8 --';

(

private void calculate2&' {

int one Inte%er.parseInt&input!.%et$trin%&'';

int t,o Inte%er.parseInt&input#.%et$trin%&'';

int result one : t,o;

item.set ext&result 8 --';

(

public void command)ction&Command c" Displayable d'{

$trin% label c.%etLabel&';

if &label.e uals&-)ddition-'' {

calculate&';

(

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else if &label.e uals&-$ubtraction-'' {

calculate!&';

(

else if &label.e uals&-Multiplication-''

{

calculate#&';

form.append&- +e )ns,er is1-';

(

else if &label.e uals&-Division-''

{ calculate2&';

form.append&- +e )ns,er is1-';

(

(

(

'utPut(

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Conclusion: