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INSTALLATION OF JAVA



1) To install Java Software in machine first we download Java set up from this link

https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2) Extract Zip file and Install them

3)  It provide complete environment of JDK and JRE under

C:/Program Files/Java/JDK
C:/Program Files/Java/JRE

4)  Set path of C:/program files/java/jdk/bin

    Right click on my computer|My pc  ---> Properties  ----> Advances System Setting ---> Environment Variable---> Click on New Button (User Variable)

Variable name:-    path

Variable value:-  C:\Program Files\Java\jdk1.8.0_161\bin


5) click on OK,OK,OK Button




JAVA SAMPLE Program

import java.util.Scanner;
class Swap
{
   public static void main(String args[])
   {
      Scanner sc = new Scanner(System.in);
      int a,b;
      System.out.println("Enter First Number");
      a=sc.nextInt();  //scanner object to integer
      System.out.println("Enter Second Number");
      b=sc.nextInt();  //scanner object to integer
      a=a+b;
      b=a-b;
      a=a-b;
      System.out.println("a="+a);
      System.out.println("b="+b);


   }


}
//WAP to calculate the addition of complex numbers?

//WAP to reverse a five-digit number without using a loop and find max and second max element without using Loop?

                              NEXT SESSION







6 Comments

POST Answer of Questions and ASK to Doubt

  1. class Complex
    {
    public static void main(String args[])
    {
    int a=2,b=4;
    int c=3,d=2;
    System.out.println("First Number is: "+a+"+"+b+"i");
    System.out.println("Second number is: "+c+"+"+d+"i");
    int x=a+c;
    int y=b+d;
    System.out.println("Sum is: " +x+"+"+y+"i");
    }
    }

    ReplyDelete
  2. public class ss
    {
    public static void main(String args[])
    {
    float p,q,r,si;
    p=10000;
    q=2;
    r=2;
    si=(p*q*r)/100;
    System.out.println("result is ="+si);
    }
    }

    ReplyDelete
  3. Q:- WAP to calculate the addition of complex numbers?
    Solution :-
    class Complex
    {
    public static void main(String args[])
    {
    int a=2,b=4;
    int c=3,d=2;
    System.out.println("First Number is: "+a+"+"+b+"i");
    System.out.println("Second number is: "+c+"+"+d+"i");
    int x=a+c;
    int y=b+d;
    System.out.println("Sum is: " +x+"+"+y+"i");
    }
    }

    ReplyDelete
  4. Q:- wap to find the Area and Perimeter of Rectangle ?
    Solution:-
    class Area
    {
    private int l,b;
    public void getdata(int x, int y)
    {l=x;
    b=y;}

    public void showdata1()
    { int p;
    p=l*b;
    System.out.println("Area of Rectangle is " +p);}

    public void showdata2()
    { int q;
    q=2*(l+b);
    System.out.println("Perimeter of Rectangle is "+q);}


    public static void main(String args[])
    {Area A1 = new Area();
    Area A2 = new Area();
    A1.getdata(2,50);
    A1.showdata1();
    A2.getdata(2,50);
    A2.showdata2();}
    }

    ReplyDelete
  5. Swap two numbers?
    import java.util.Scanner;
    class Swapping
    {
    public static void main(String []args)
    {
    int a,b;
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter any number");
    a=sc.nextInt();
    b=sc.nextInt();
    a=a+b;
    b=a-b;
    a=a-b;
    System.out.println("a=" +a);
    System.out.println("b=" +b);
    }
    }

    ReplyDelete
  6. Roshnee Rathode

    Q.Swap two number
    import java.util.Scanner;
    class Swapping
    {
    public static void main(String []args)
    {
    int a,b;
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter any number");
    a=sc.nextInt();
    b=sc.nextInt();
    a=a+b;
    b=a-b;
    a=a-b;
    System.out.println("a=" +a);
    System.out.println("b=" +b);
    }
    }

    ReplyDelete

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