Add to Favorites    Make Home Page 216 Online  

 Language Categories  
 Our Services  

Home » Java Home » GUI Home » Standard Calculator

A D V E R T I S E M E N T

Search Projects & Source Codes:

Title Standard Calculator
Author jen fernandez
Author Email jfernandez.ph [at] gmail.com
Description This is just a laboratory exercise at school. I wonder if
there are some variables declared though it has no use because this
code
is actually a both Standard and Scientific Calculator Code. I haven't
finish the whole scientific program so I've decided to finalize the
Standard Calculator first so I can post it already. If you will get the
code, I suggest that you should try to understand how the code works
and
so you can also delete some of the words or variables that I failed to
erase. if you have some questions about it, mail me at
Category Java » GUI
Hits 68058
Code Select and Copy the Code
Code : import java.awt.*; import javax.swing.*; import java.awt.event.*; /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ public class Calculator implements ActionListener{ char o; int ctr=0; String value="", cv="", oBtn; Double answer, v1, v2; Double NumberConverted; Frame f; Panel p1, p2, p3, p4, p5, p6; private TextField tField; private Menu EditMenu; private MenuBar menuBar; private MenuItem fmi1, fmi2, fmi3; private Button num0, num1, num2, num3, num4, num5, num6, num7, num8, num9; private Button bAdd, bSub, bMul, bDiv, bPer, bSqrt, bFrac, bInt, bDot, bCE, equals, backspace, clear; /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ Calculator(){ f = new Frame("Calculator"); menuBar = new MenuBar(); EditMenu = new Menu ("Edit"); fmi1 = new MenuItem(" Copy "); fmi2 = new MenuItem(" Paste "); fmi3 = new MenuItem(" Quit "); EditMenu.add(fmi1); EditMenu.add(fmi2); EditMenu.addSeparator(); EditMenu.add(fmi3); p1 = new Panel(); p2 = new Panel(); p3 = new Panel(); p4 = new Panel(); p5 = new Panel(); p6 = new Panel(); tField = new TextField(35); num0 = new Button ("0"); num1 = new Button ("1"); num2 = new Button ("2"); num3 = new Button ("3"); num4 = new Button ("4"); num5 = new Button ("5"); num6 = new Button ("6"); num7 = new Button ("7"); num8 = new Button ("8"); num9 = new Button ("9"); bAdd = new Button ("+"); bSub = new Button ("-"); bMul = new Button ("x"); bDiv = new Button ("/"); bPer = new Button ("%"); bSqrt = new Button ("sqrt"); bFrac = new Button ("1/x"); bInt = new Button ("+/-"); bDot = new Button ("."); bCE = new Button ("CE"); equals = new Button ("="); backspace = new Button ("Backspace"); clear = new Button ("C"); } /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ public void launchFrame(){ tField.setText("0."); tField.setEnabled(false); menuBar.add(EditMenu); p2.add(backspace); p2.add(bCE); p2.add(clear); p3.add(num7); p3.add(num8); p3.add(num9); p3.add(bDiv); p3.add(bSqrt); p4.add(num4); p4.add(num5); p4.add(num6); p4.add(bMul); p4.add(bPer); p5.add(num1); p5.add(num2); p5.add(num3); p5.add(bSub); p5.add(bFrac); p6.add(num0); p6.add(bInt); p6.add(bDot); p6.add(bAdd); p6.add(equals); p2.setLayout(new GridLayout (1, 3, 2, 2) ); p3.setLayout(new GridLayout (1, 3, 2, 2) ); p4.setLayout(new GridLayout (1, 3, 2, 2) ); p5.setLayout(new GridLayout (1, 3, 2, 2) ); p6.setLayout(new GridLayout (1, 3, 2, 2) ); f.setLayout(new GridLayout (6, 1) ); f.setResizable(false); f.setSize(300,250); f.add(tField); f.add(p2); f.add(p3); f.add(p4); f.add(p5); f.add(p6); f.setVisible(true); f.setMenuBar(menuBar); f.pack(); // ACTION LISTENERS clear.addActionListener(this); bCE.addActionListener(this); num0.addActionListener(this); num1.addActionListener(this); num2.addActionListener(this); num3.addActionListener(this); num4.addActionListener(this); num5.addActionListener(this); num6.addActionListener(this); num7.addActionListener(this); num8.addActionListener(this); num9.addActionListener(this); bAdd.addActionListener(this); bSub.addActionListener(this); bMul.addActionListener(this); bDiv.addActionListener(this); bPer.addActionListener(this); bInt.addActionListener(this); bSqrt.addActionListener(this); bFrac.addActionListener(this); bDot.addActionListener(this); equals.addActionListener(this); backspace.addActionListener(this); fmi1.addActionListener(this); fmi2.addActionListener(this); fmi3.addActionListener(this); } /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ /* |------------ START OF ACTION EVENTS ------------| */ public void actionPerformed(ActionEvent a){ try{ /* |-------- Handling Exceptions ---------| */ if(a.getSource()==num0){ value+=0; tField.setText(value); } if(a.getSource()==num1){ value+=1; tField.setText(value); } if(a.getSource()==num2){ value+=2; tField.setText(value); } if(a.getSource()==num3){ value+=3; tField.setText(value); } if(a.getSource()==num4){ value+=4; tField.setText(value); } if(a.getSource()==num5){ value+=5; tField.setText(value); } if(a.getSource()==num6){ value+=6; tField.setText(value); } if(a.getSource()==num7){ value+=7; tField.setText(value); } if(a.getSource()==num8){ value+=8; tField.setText(value); } if(a.getSource()==num9){ value+=9; tField.setText(value); } /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ if (a.getSource() == bAdd){ v1 = Double.parseDouble( tField.getText() ); ctr=0; o = '+'; value=""; tField.setText("" +value); } if (a.getSource() == bSub){ v1 = Double.parseDouble( tField.getText() ); ctr=0; o = '-'; value=""; tField.setText("" +value); } if (a.getSource() == bMul){ v1 = Double.parseDouble( tField.getText() ); ctr=0; o = 'x'; value=""; tField.setText("" +value); } if (a.getSource() == bDiv){ v1 = Double.parseDouble( tField.getText() ); ctr=0; o = '/'; value=""; tField.setText("" +value); } if (a.getSource() == bPer){ v1 = Double.parseDouble( tField.getText() ); ctr=0; value=""; answer = (v1/100); tField.setText("" +answer); } /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ /* |-- EQUALS ACTION --| */ if(a.getSource()==equals){ value=""; v2 = Double.parseDouble(tField.getText()); if(o=='+'){ ctr=0; answer = v1 + v2; tField.setText("" +answer); value=""; v1=null; v2=null; } else if(o=='-'){ ctr=0; answer = v1 - v2; tField.setText("" +answer); value=""; v1=null; v2=null; } else if(o=='x'){ ctr=0; answer = v1 * v2; tField.setText("" +answer); value=""; v1=null; v2=null; } else if(o=='/'){ ctr=0; answer = v1 / v2; tField.setText("" +answer); value=""; v1=null; v2=null; } else if(o=='%'){ ctr=0; answer = v1 % v2; tField.setText("" +answer); value=""; v1=null; v2=null; } else{} } /* |-- EQUALS ACTION --| */ /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ /* |-- Clear --| */ if(a.getSource()==clear){ ctr=0; v1=null; v2=null; value=""; answer=0.; tField.setText("0."); } if(a.getSource()==bCE){ ctr=0; value=""; tField.setText("0."); } /* |-- Point --| */ if(a.getSource() == bDot){ if(ctr==0){ value+="."; ctr+=1; tField.setText("" +value); } else{ System.out.print(""); } } /* |-- Back Space --| */ if(a.getSource() == backspace){ value = value.substring(0, value.length()-1 ); tField.setText("" +value); } /* |-- Square Root --| */ if(a.getSource() == bSqrt){ ctr=0; value = ""; v1 = Math.sqrt( Double.parseDouble( tField.getText() ) ); tField.setText("" +v1); } /* |-- Integer --| */ if(a.getSource() == bInt){ ctr=0; NumberConverted = ( Double.parseDouble(tField.getText()) * -1 ); value = ""; tField.setText("" +NumberConverted); } /* |-- Reciprocal --| */ if(a.getSource() == bFrac){ ctr=0; value = ""; Double NumberContainer = ( 1 / Double.parseDouble( tField.getText() ) ); tField.setText("" +NumberContainer); } // ------------ Menu Item Actions ------------ // if(a.getSource() == fmi1){ cv = tField.getText(); } if(a.getSource() == fmi2){ tField.setText("" +cv); } if(a.getSource() == fmi3){ System.exit(0); } } // End of Try /* |-------- Attempting To Catch Runtime Errors ---------| */ catch(StringIndexOutOfBoundsException str){} catch(NumberFormatException nfe){} catch(NullPointerException npe){} } // END OF ACTION EVENTS /* 25Oct2005: Designed and programmed by jfernandez.ph */ /* 13Nov2005: Designed and programmed by jfernandez.ph */ public static void main (String args[]){ Calculator s = new Calculator(); s.launchFrame(); } }

Related Source Codes

Script Name Author
Sending mail Using JavaMail to Yahoo and Gmail accounts sai prasad
Simple Program in Java to Implement Multithreading Satish.K
Simple Calculator in Java Using Remote Method Invocation Satish.K
Guest Book Application Using Servlets Satish.K
String Manipulation Using Stringification Satish.K
String Manipulation Using Stringification Satish.K
Moving Ball Application Using Java Beans Satish.K
Rapid Roll game subrahmanyeswararao
student mgm arpan
Sourav Datta
Download Manager Sagar
Address Book in Java Rahul Chouhan
address book using java database connectivity(jdbc-msaccess) shekhar bansal
sun Steganography B.Rajavel
Connecting Java with MS-Access - Inserting data in Aseem

A D V E R T I S E M E N T




Google Groups Subscribe to SourceCodesWorld - Techies Talk
Email:


Free eBook - Interview Questions: Get over 1,000 Interview Questions in an eBook for free when you join JobsAssist. Just click on the button below to join JobsAssist and you will immediately receive the Free eBook with thousands of Interview Questions in an ebook when you join.

New! Click here to Add your Code!


ASP Home | C Home | C++ Home | COBOL Home | Java Home | Pascal Home
Source Codes Home Page

 Advertisements  

Google Search

Google

Source Codes World.com is a part of Vyom Network.

Vyom Network : Web Hosting | Dedicated Server | Free SMS, GRE, GMAT, MBA | Online Exams | Freshers Jobs | Software Downloads | Interview Questions | Jobs, Discussions | Placement Papers | Free eBooks | Free eBooks | Free Business Info | Interview Questions | Free Tutorials | Arabic, French, German | IAS Preparation | Jokes, Songs, Fun | Free Classifieds | Free Recipes | Free Downloads | Bangalore Info | Tech Solutions | Project Outsourcing, Web Hosting | GATE Preparation | MBA Preparation | SAP Info | Software Testing | Google Logo Maker | Freshers Jobs

Sitemap | Privacy Policy | Terms and Conditions
Copyright ©2003-2014 SourceCodesWorld.com, All Rights Reserved.
Page URL: http://www.sourcecodesworld.com/source/show.asp?ScriptID=1085


Download Yahoo Messenger | Placement Papers | Free SMS | C Interview Questions | C++ Interview Questions | Quick2Host Review