Q- What is Java ? with syntax.
Ans- Java is a class based high level object oriented programming language. develop by " James Gosling " and his friends in the year 1991.
The first version of Java (J D K 1.0 ) was released on the year 23rd jan ,1996 by sum micro system.
Every line of code that runs in Java must be inside a class. In our example,we named the class Main. class should always start with an uppercase first letter. Note: Java is case-sensitive ."MyClass" and "myclass" has different meaning
Syntax:- class class -name
{
public static void main (String[] args)
{
System.out.printIn("Hello Word");
}
}
Rule :-
(1) - Save class-name.java
(2) - Compilation java class name.java
(3) - Excecution Java class name
>> Program <<
1- class A
2 - {
3 - public static void main (String a[])
4 - {
5 - System.out.print("Welcome Java programming ");
6 - }
7 - }
OUTPUT -
Welcome Java programming
Features of Java
1- Object oriented
2- Platform independent
3- Simple Language
4- Secure
5- Portable
6- Compiled & interpreted
7- Robust
8- Distributed
9- Multi - threaded
10- Performance
11- Dynamic
WHY JAVA SO POPULER
The Java is populer because all feature is presented so Java is populer.
What is OOP ? Full explanation.
Ans- Oop stands for object oriented programming language, the main purpose of OOP is to deal with real world entity using Programming lauguage.
OOPs features
- Class
- Object
- inheritance
- Polymorphism
- Encapsulation
- abstraction
JAVA HISTORY
- Java is a totaly computer based programming language developed by Sum micro Systerm ( James Gosling, mike sheridan & patrick naughton )
- In the year 1991 James Gosling & his friends strat a porject Team- Green team
- James Gosling - green talk Entension- oak
- Oak - Java (1995)
- Java- Setbox ,Television,Remote etc.
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