Java architecture

Java architecture

• 1.
  JAVA ARCHITECTURE  Whatis Java Architecture  Components of Java - Rakesh Vadnala
• 2.
   Java Architecturecombine the process of Compilation and Interpretation. Compilation : A Compiler reads program in one-go and gives output if the program is correct else an error. Interpretation : It reads a program Line-by-Line.  Reading every expression gives output if the program is correct.  It gives error when it encounters the first mistake in any line of code.
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  ARCHITECTURE Source Code Compiler JAVA VIRTUAL MACHINE (JVM) Bytecode OPERATIG SYSTEM (OS)  Java code converted into Byte code which is done by Java Compiler.  Byte code converted into Machine Code is done by JVM.  The machine code which is executed directly by Machine i.e., OS.
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  COMPONENTS OF JAVAARCHITECTURE  1. JVM  2. JRE  3. JDK JDK JRE JVM +Development Tools +Library Classes
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   Development Tools: java, javac, jar, Javadoc  Library classes : Packages, Classes lang util net Etc.. Stack System Math Scanner Socket URL Packages Classes
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  JVM (JAVA VIRTUALMACHINE)  The JVM is a Java platform component that provides an environment for executing Java programs.  JVM interprets the bytecode into machine code which is executed in the machine in which the Java program runs.  Java Applications are called WORA (Write Once Run Anywhere).
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  JVM ARCHITECTURE .class ClassLoader Method Area Heap Stack Native Stack JVM MEMORY Native Interface Native Libraries JIT Compiler Garbage Collector Execution Engine