INTRODUCTION OF JAVA

INTRODUCTION OF JAVA

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  PRESENTATION ON INTRODUCTION OF JAVA PRESENTEDBY Name ID MD. SUMON SORDER 161-15-953
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  CONTENT • WHAT ISJAVA ? • WHERE IS JAVA USED ? • FEATURES OF JAVA • JAVA PROGRAM TRANSLATION • JAVA VIRTUAL MACHINE • JAVA SYSTEM OVERVIEW • JAVA PROGRAM-DEVELOPMENT PHASE • ADVANTAGE OF JAVA • DISADVANTAGE OF JAVA • PROJECT
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  WHAT IS JAVA?  JAVA IS OBJECT ORIENTED PROGRAMMING LANGUAGE AS WELL AS PLATEFORM.  JAVA WAS DEVELOPED BY A TEAM LED BY JAMES GOSLING AT SUN MICROSYSTEMS.  JAVA IS A FIRST PROGRAMMING LANGUAGE WHICH PROVIDE THE CONCEPT OF WRITING PROGRAMS THAT CAN BE EXECUTED USING THE WEB.
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  WHERE IS JAVAUSED ? ACCORDING TO THE SUN , 3 BILLION DEVICES RUN JAVA. THERE ARE MANY DEVICES WHERE JAVA IS CURRENTLY USED.  DESKTOP APPLICATIONS - ACROBAT READER, MEDIA PLAYER, ANTIVIRUSES ETC.  WEB APPLICATIONS - IRCTC.CO.IN , JAVATPOINT.COM ETC.  ENTERPRISE APPLICATION – BANKING APPLICATION, BUSINESS APPLICATION.  MOBILE.  EMBEDDED SYSTEM.  GAMES.
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  FEATURES OF JAVA •JAVA IS SIMPLE. • JAVA IS OBJECT ORIENTED • JAVA IS DISTRIBUTED • JAVA IS ARCHITECTURE NEUTRAL • JAVA IS ROBUST • JAVA IS INTERPRETED AND COMPILED • JAVA IS SECURE • JAVA IS PORTABLE • JAVA IS MULTI-THREADED
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  JAVA PROGRAM TRANSLATION Hello.jav a javacHello.clas s Interpreter for WinXP Interpreter for Mac Interpreter for Unix Source Program Java Compiler Java Bytecode
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  JAVA VIRTUAL MACHINE JAVA VIRTUAL MACHINE IS THE LIKE USUAL COMPUTER WHICH TRANSLATE HIGH LEVEL LANGUAGE INTO MACHINE LANGUAGE.  JUST LIKE THAT JAVA VIRTUAL MACHINE ALSO TRANSLATE BYTECODE INTO MACHINE LANGUAGE.  JVM ARE AVAILABLE FOR MANY HARDWARE AND SOFTWARE PLATEFORM.
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  WHAT IS OOP?  OBJECT-ORIENTED PROGRAMMING IS A METHOD OF IMPLEMENTATION.  A LANGUAGE IN WHICH EVERYTHING REPRESENT IN THE FORM OF OBJECT IS CALLED OBJECT ORIENTED PROGRAMMING LANGUAGE. IT NOT ONLY MAKES THE PROGRAM LESS COMPLEX BUT ALSO MAKES THE SOFTWARE REUSE FEASIBLE AND POSSIBLE.  JAVA IS NOT TRULY OBJECT ORIENTED PROGRAMING LANGUAGE
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  CONCEPTS OF OOP •OBJECT •CLASS •ENCAPSULATION •INHERITANCE •POLYMORPHISM •ABSTRACTION
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  JAVA SYSTEM OVERVIEW Java Application JavaProgramming Language Java Native Interface Java Class Library Operating System Class Load er Verifier Executio n Java Virtual Machine
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  JAVA PROGRAM-DEVELOPMENT PHASES
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  DATA TYPES INJAVA
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  GARBAGE COLLECTION  GARBAGECOLLECTION IS THE MECHANISM THAT DE ALLOCATE THE MEMORY OF AN OBJECT WHEN IT IS NO LONGER REFERENCED BY A VARIABLE.  IN C++, THE MEMORY OF AN OBJECT IS RELEASED BY USE OF DELETE OPERATOR.  JAVA VIRTUAL MACHINE DETERMINES WHEN TO FREE UP THE MEMORY OF AN OBJECT.
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  ADVANTAGES OF JAVA JAVA IS SIMPLE LANGUAGE.  JAVA DOES NOT SUPPORT POINTERS.  JAVA IS FIRST LANGUAGE IN WHICH PROGRAMS CAN BE EXECUTED USING WEB.  WRITE ONCE RUN ANYWHERE (WORA).
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  DISADVANTAGES OF JAVA SLOW PERFORMANCE.  NO SUPPORT FOR LOW LEVEL PROGRAMMING.  POOR FEATURES IN JAVA.  NO CONTROL OVER GARBAGE COLLECTION.
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  PROJECT INTRANET MAILING SYSTEM •USERS CAN SEND INFORMATION AND QUERY TO EACH OTHER. • PROVIDES THE FACILITY TO MAINTAIN PROFILE AND INBOX OF EACH EMPLOYEE SEPARATELY. • DEVELOP A COMMUNICATION INTERFACE FOR THE ORGANIZATION.
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  THANK YOU
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  ANY QUERY ?