Java is a popular, object-oriented programming language that is platform independent and can be used to create a variety of applications including desktop applications, web applications, games, and mobile applications. Java uses concepts like classes, objects, inheritance, polymorphism, abstraction, and encapsulation to simplify software development and maintenance. Abstraction in Java is achieved through mechanisms like abstract classes and interfaces to hide internal details and show only functionality to the user.

1. UNDER THE GUIDENCE OF
PRINCE MALHOTRA (Manager)

2. Java is a high-level programming language originally
developed by Sun Microsystems and released in 1995.
Java runs on a variety of platforms, such as Windows ,
Mac OS, and the various versions of UNIX.
Used in :
#Desktop Applications
#Web application
#robotics
#Games
#Mobile

3. #SIMPLE
#OBJECT ORIENTED
#PLATFORM INDEPENDENT
#SECURED
#MULTITHREADED
#ROBUST

8. Designing programs using classes and
objects..Simplify software development and
maintenance by providing concepts:
#object
#class
#inheritance
#polymorphism
#Abstraction
#Encapsulation

9. Abstraction is a process of hiding internal details
and showing only functionality to the user..
Ways to achieve abstraction:
# Abstract class
# Interface
abstract class Bike { abstract void run(); }
class Honda extends Bike {
void run() { System.out.println(“run safely”); }
public static void main(String args[]) {
Bike obj=new Bike();
obj.run();
}}

10. It is a mechanism to achieve fully abstraction and
multiple inheritance in java...
interface Printable { void print(); }
interface Showable { void show(); }
class A implements Printable,Showable {
print void print(){ System.out.println(“hello”); }
print void show(){ System.out.println(“Welcome”); }
public static void main(String [] args)
{
A obj= new A();
obj.print() ; obj.show() ; }}

12. class Bike {
void run() { System.out.println(“running ”); }
class Splender extends Bike {
void run() { System.out.println(“running safely”); }
public Static void main(String []args)
{
Bike obj=new Splender ();
obj.run();
}}

13. Default Constructor:
class B
{
B(){ System.Out.Println(“Welcome”)}
public Static void main()
{
B obj=new B(); }}

15. class S
{
Int id; String name; int age;
}
S(int i,String n,int a) { name=n; id=i; age=a; }
S(int i; String n) { name=n; id=i; }
void display(){ System.out.println (id+” ”
+name” ”+age) ; }
public Static void main(String args[]){
S ob1=new S(111, “ keran”);
S obj2=new S(231, “bhanu”, 23);
obj1.display();
obj2.display(); }}

16. Static property is shared to all objects..
class S {
int rollno; String name;
Static String college=ITS; }

18. #try
#catch
#finally
#throw
#throws

19. class A{
public Static void main(String []args) {
int a=integer parse int(args[0]);
int b=integer parse int(args[1]);
int div=0;
try{
div=a/b;
System.out.println(div); }
catch(Arithmetic Exception e){
printStackTrace();
}
System.out.println(“the race is on”);
}}