Junit

/*
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 */
package mytest;

/**
 *
 * @author STD
 */
public class Calculator {

    public int multiply(int x, int y) {
        return x+y;
    }
     public int minus(int x, int y) {
        return x-y;
    }
      public int divide(int x, int y) {
        return x/y;
    }
      public int modulo (int x, int y) {
        return x%y;
    }

}