Calculator in java

package calculation.twovar;

public class DIFFERENCE{
                        int var1;
                         int var2;
                    public DIFFERENCE(int a,int b)
                        {
                         var1=a;
                         var2=b;
                        }
                  public  int getDIFFERENCE()
                        {
                          return var1-var2;
                          }


}


package calculation.twovar;

public class DIVISION{
                        int var1;
                        int var2;
                   public DIVISION(int a,int b)
                        {
                         var1=a;
                         var2=b;
                        }
                     public  float getDIVISION()
                        {
                          return var1/var2;
                          }


}


package calculation.twovar;

public class PRODUCT{
                        int var1;
                        int var2;
                       public PRODUCT(int a,int b)
                        {
                         var1=a;
                         var2=b;
                        }
                      public  int getPRODUCT()
                        {
                          return var1*var2;
                          }


}



 package calculation.twovar;

public class SUM
 {
      int var1;
      int var2;

  public SUM(int a,int b)
                    {
                      var1=a;
                      var2=b;
                    }
     public   int getSUM()
                    {
                      return var1+var2;
                    }
 }

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