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- 1. We Believe in The Power of Single Idea
- 2. • Java is a programming language and a platform. • Java is a high level, robust, secured and object- oriented programming language. What is Java
- 3. • Platform: Any hardware or software environment in which a program runs, is known as a platform. Since Java has its own runtime environment (JRE) and API, it is called platform. What is Platform
- 4. • Java was developed by James Ghosling, Patrick Naughton, Mike Sheridan at Sun Microsystems Inc. in 1991 • Originally designed for small, embedded systems in electronic appliances like set-top boxes. • Firstly, it was called "Greentalk" by James Gosling and file extension was .gt. Creation of Java
- 5. • After that, it was called Oak and was developed as a part of the Green project. • Why "Oak" name • Oak is a symbol of strength and choosen as a national tree of many countries like U.S.A., France, Germany, Romania etc. • In 1995, Oak was renamed as "Java" because it was already a trademark by Oak Technologies. Creation of Java
- 6. Java is an island of Indonesia where first coffee was produced (called java coffee). Creation of Java
- 7. • java development kit contains tools needed to develop the Java programs. JAVA DEVELOPMENT KIT
- 8. • The Java Developer’s Kit contains a variety of tools and Java development information • Interpreter • Compiler • Applet Viewer • Debugger • Class File Disassembler • Header and Stub File Generator • Documentation Generator JAVA DEVELOPMENT KIT
- 9. • PATH OF JDK • C:Program FilesJavajdk1.8.0_141bin JAVA DEVELOPER KIT
- 10. • The Java Runtime Environment (JRE), also known as Java Runtime, is part of the Java Development Kit (JDK) • it consists of the Java Virtual Machine (JVM), core classes, and supporting files. JRE
- 11. JRE
- 13. Byte Code
- 14. JVM (Java Virtual Machine) is an abstract machine. It provides runtime environment in which java byte code can be executed. The JVM performs following operation: • Load code • Verify Code • Execute code • Provide runtime environment JVM
- 16. Internal Detail Of JVM
- 17. Classloader: • Class loader is a subsystem of JVM that is used to load files.
- 18. Class Loader • Bootstrap Class Loader – JRE/lib/rt.jar • Extension Class Loader – JRE/lib/ext • Application ClassLoader – CLASSPATH environment variable, -classpath or -cp option, Class-Path attribute of Manifest inside JAR file.
- 19. Class(Method) Area • Class(Method) Area stores per-class structures such as the runtime constant pool, field and method data, the code for methods.
- 20. Heap • It is the runtime data area in which objects are allocated.
- 21. Stack • Java Stack stores frames. It holds local variables and partial results, Each thread has a private JVM stack
- 22. Program Counter Register • PC (program counter) register. It contains the address of the Java virtual machine instruction currently being executed.
- 23. Native Method Stack • It contains all the native methods used in the application.
- 24. Execution Engine • 1.A virtual processor • 2.Interpreter • 3) Just-In-Time(JIT) compile
- 26. Example • Cloth Manufacturing Process Cotton assume its source code
- 27. cotton to yarn(Source Code To Byte Code) Source Code Byte Code
- 28. Yarn To Cloth yarn send to particular environment (cloth factory) where its Convert Into cloth
- 29. • Cotton Source Code • Yarn Byte Code • Cloth Factory JVM • Labour,Electricity Is JRE
- 31. Thank you! Visit Us 3rd Floor, Mk Plaza Amrapali West Marg, Vaishali Nagar Jaipur-302021 Rajasthan 503,Shri Kriti CGHS,Plot No.64,Sec.55 Gurgaon -122002,Haryana Call :+91-9057710001,2,6 Email: training@ mcainternship.online http://www.mcainternship.online/
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