Area and Perimeter of Rectangle,Java Rectangle Example,Calculating,program to find area and rectangle,

class Rectangle
     {

       int length, width;

       Rectangle(int x, int y)
               {
                length = x;
                width = y;
               }

           int rectArea()
            {
               return (length * width);
            }
     }

class RectangleArea
     {
        public static void main(String args[])
            {


               Rectangle rect1 = new Rectangle(15,10);
               int area1 = rect1.rectArea();
               System.out.println("Rectangle = " + area1);
             }
     }

Students marks analyzing system ||Download Student Marks Details Code In Java Source Codes||

import javax.swing.JOptionPane;
class GreatPoint
{
   public static void main( String args[])
    {

   float bang,eng,mat,per;
   
     String num1 ; String num2  ; String num3;
            //Output for input number,persubject
    num1=JOptionPane.showInputDialog("Enter the  first number");
    num2=JOptionPane.showInputDialog("Enter the second number");
   num3=JOptionPane.showInputDialog("Enter the third number");
   bang=Integer.parseInt(num1);
   eng=Integer.parseInt(num2);
   mat=Integer.parseInt(num3);


  per=(bang+eng+mat)/3;
  if(per>=80)

  JOptionPane.showMessageDialog(null,"A+");
 else if((per>=75)&&(per>65))

  JOptionPane.showMessageDialog(null,"A");
  else if((per>=65)&&(per>50))

  JOptionPane.showMessageDialog(null,"A-");
else

 JOptionPane.showMessageDialog(null,"fail");


   }
}

Sum of Fibonacci Series

public class FibonacciA
{
  public static void main(String[] args)
  {
      int sum=0;
// Initialize some variables
    int current, prev = 1, prevprev = 0;
// Loop exactly 10 times
    for(int i = 0; i < 10; i++)         
    {
// Next number is sum of previous two
      current = prev + prevprev;       
      System.out.println(current + " ");// Print it out
       sum+=current;
// First previous becomes 2nd previous
      prevprev = prev;
// And current number becomes previous                 
      prev = current;                  
    }
// Terminate the line, and flush output
    System.out.println();              
    System.out.print("Result= " + sum);
  }
}

How to Write Your First Program in Java ?Creating Your First Java Program

Programming Code Sum of Fiboneci Number

class SumFiboneci1
     {
        public static void main(String args[])
              {
                int sum=0;

                System.out.println("The numbers and the sum are given below");

                for(int i=1;i<=10;i++)
                    {


                             System.out.println(i);
                             sum+=i;
                         }

             System.out.print("\n");
               System.out.print("Result    ;    " + sum);
              }

     }