Jvm
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The document discusses the Java Virtual Machine (JVM). It defines the JVM as an abstract machine that provides a runtime environment for executing Java bytecode. It explains that the JVM performs four main tasks: loading code, verifying code, executing code, and providing a runtime environment. It also discusses the differences between the Java Runtime Environment (JRE), Java Development Kit (JDK), and JVM.
Jvm
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- 3. Java virtual machine (JVM) Muhammed Thanveer Melayi shernoobi@gmail.com Muhammed Thanveer M Muhammed Thanveer M Linkedin Profile
- 4. Java Virtual Machine • JVM (Java Virtual Machine) is an abstract machine.It is a specification that provides runtime environment in which java bytecode can be executed. • JVMs are available for many hardware and software platforms (i.e.JVM is plateform dependent).
- 5. The JVM performs four main tasks: • Loads code • Verifies code • Executes code • Provides runtime environment
- 6. Java Runtime Environment • .It is used to provide runtime environment.It is the implementation of JVM.It physically exists.It contains set of libraries + other files that JVM uses at runtime. Implementation of JVMs are also actively released by other companies besides Sun Micro Systems.
- 7. JDK JDK is an acronym for Java Development Kit.It physically exists.It contains JRE + development tools.
- 8. Difference between JRE, JDK and JVM • JRE and JDK come as installer while JVM are bundled with them. • JRE only contain environment to execute java program but doesn’t contain other tool for compiling java program. • JVM comes along with both JDK and JRE and created when you execute Java program by giving “java” command. •
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