Difference Between C++ & JAVA

Difference Between   C++ & Java-

1. In C++ we can write a programs without classes,but in Java we can not write programs without classes.
2. In C++ Memory creation & Distruction is done manually by the programmers ,but in Java Memory creation & destruction done automatically by the JVM.
3. In C++ we have constructor & destructor ,but in Java Only we have only Constructor there are no destrutor.
4. C++ has three Acess modifiers Private Public and Protected ,But in Java we have 4 Acess Modifiers Public,Protected,Private & default.

[NOTE-:     Java is Object Oriented programming language because we can not start a programme without class.]

Define & Differentiate  JDK,JRE,JVM-:

JDK- :

1. It stands for Java Development kit.
2. By using JDK we can write the programs ,debug the programs if any error, Link the Libraries and execute the program .
3. JDK is installed on Developer System.
4. JDK contains Java Compiler +JVM

JRE-:

1. JRE stands for Java Runtime Environment .
2. By using JRE we can Link the Libraries and execute the Byte Code.
3. JRE contains only JVM.

Java Latest version -

JAVA8

• JDK 1.8 + JRE 1.8

JAVA 7

• JDK 1.7 + JRE 1.7     //Dolphin

JAVA6

• JDK 1.6 + JRE 1.6   //Mustage

JAVA5

• JDK 1.5 + JRE 1.5   //Tiger      etc...

JVM-:

[Note-:

Virtual Machine-     The isolated High Perform & duplicate copy of Machine is Known as  Virtual Machine.]

JVM is software module running independently in executing the instruction of the programme.