Layang - layang

import java.io.*;

public class layanglayang {

     public static void main(String[] args) {

          

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

          

     String strd1 = null; //diagonal1 //

     String strd2 = null; //diagonal2 //

          

          

     try {

     System.out.println("Rumus L Layang - layang= 0.5 x D1 x D2");

     System.out.print("Masukan d1 : ");

     strd1=br.readLine();

     System.out.print("Masukan d2 : ");

     strd2=br.readLine();

                                          

     }catch (IOException ioe) {

     System.out.println(" Keslahan pada sistem IO");

     System.exit(0);

           }

          

           double d1;

           double d2;

           double luas;

                          

     d1=Double.parseDouble(strd1);

     d2=Double.parseDouble(strd2);

               

                 

     luas = 0.5 * d1 * d2 ;

     System.out.println ("Luas layang - layang " + luas );

               

     }

}