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Java program using user package to calculate circle and rect ,square formula.

Posted By:laptop charles       Posted Date: June 30, 2010    Points: 10    Category: OOPS    URL: http://www.dotnetspark.com  

Graphical formula.
 

Using package to calculate the  circle and rect ,square and spare formula.
The below coding inside the folder name is rand.
 package rand;
import java.io.*;

public class chpackage
     {
      public String read()throws IOException
         {
           BufferedReader br=new  BufferedReader(new InputStreamReader(System.in));
         String str=br.readLine();
         return str;
         }

public void paste(String st)
         {
         System.out.print(st);
         }
public void put(String pu)
         {
         System.out.println(pu);
         }
}
The below code is outside of the folder.
import rand.*;
import java.io.*;
class pk4
     {
      public static void main(String ar[])throws IOException
         {
          chpackage c=new chpackage();
          
          c.put("AREA OF VARIOUS GEOMETRICAL FIGURES");

          
               
               {
                c.put("MAIN MENU");
                c.put("1.Area of circle");
                c.put("2.Area of triangle");
                c.put("3.Area of cylinder");
                c.put("4.Area of square");
                c.put("5.Exit");

               c.put("Enter your choice");
               int sn=Integer.parseInt(c.read());
               switch(sn)
                  {
                   case 1:
                             {
                           double r,area;
                            c.put("Enter the radius");
                            r=Double.parseDouble(c.read());
                            area=3.14*r*r;
                            c.put("The area of circle"+area);
                              break;
                 
                             }
                    case 2:
                             { 
                            double b,h,area;
                            c.put("Enter the breath");
                            b=Double.parseDouble(c.read());
                            c.put("Enter the height");
                            h=Double.parseDouble(c.read());
                            area=0.5*b*h;
                            c.put("The area of circle"+area);                 
                             break;
                             }
                              
                  case 3:
                             {
                            double r,h,area;
                            c.put("Enter the radius");
                            r=Double.parseDouble(c.read());
                            c.put("Enter the height");
                            h=Double.parseDouble(c.read());
                            area=3.14*r*r*h;
                            c.put("The area of cylinder"+area);
                            break;                  
                            }
                            
                  case 4:
                             {
                            int si,area;
                            c.put("Enter the side");
                            si=Integer.parseInt(c.read());
                            area=si*4;
                            c.put("The area of square"+area);                 
                            break;
                             }
                  case 5:
                              {
                          
                              }
                }         
               }
                   
                   }
}


     

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