What is java? Components of java

What is java? Components of java

• 1.
  Today’s Agenda :- 1).What is Java ? 2). History Of Java? 3). Components Of Java
• 2.
  What is Java? • Java is a high level, robust, object-oriented and secure programming language and a platform. -- What is Platform:- Any hardware or software environment in which a program runs, is known as a platform. Since Java has a runtime environment (JRE), it is called a platform.
• 3.
  History Of Java:- • Java  developed  James Gosling  Sun Microsystems  1991. • First Version JDK 1.0  Released  1995. • 1st name of Java  Oak, renamed as Java  1995. Since Oak was already a registered company, so James Gosling and his team changed the name from Oak to Java. • In 2010, Oracle company has acquired Sun Microsystems .
• 4.
  Features of Java:- Simple. Object-oriented PlatformIndependent Secured Robust Architecture-neutral Portable
• 5.
  Components of Java:- 1).JVM 2). JRE 3). JDK Java Virtual Machine (JVM) Java Run Time Environment (JRE) Java Development KIT(JDK) JVM + + Libraries Set Development Tools
• 6.
  • Provides runtime environment in which Java byte code can be executed. • Task Of JVM:- • Loads the code • Verifies the code • Execute the code • Provides run time environment JVM
• 7.
   JVM +Setof Libraries  It is the implementation of JVM  It contains set of libraries that JVM uses at rum time. Java Run time Environment ->
• 8.
  JRE + JDK ->Java DevelopmentKit -> It is full featured development kit. -> It contains JRE +Development tools Development tools:- Compiler + Debugger + Java Doc