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/*--------------------------------------------------------------------------*/

/* File name  : err3.java                                              */

/*            :                                                             */

/* Cause      : Evaluation sequence of the formula which used               */

/*            : the substitution operator is not performed correctly.       */

/*            :                                                             */

/* Message    : NG1:[27]-->[9]                                              */

/*            : NG2:[27]-->[9]                                              */

/*            :                                                             */

/* Note       : JLS 15.6 Evaluation Order (p305)                            */

/*                 S15.6.1 Evaluate Left-Hand Operand First                 */

/*            : A formula should be evaluated to 9*3 instead of 3*3.        */

/*--------------------------------------------------------------------------*/

public class err3 {

  public static void main(String[] args) {

    int x = 9;

    x *= (x = 3);

    if ( x == 27 ) {

      System.out.println("OK1");

    } else {

      System.out.println("NG1:[27]-->["+x+"]");

    }

    int y = 9;

    y = y * (y = 3);

    if ( y == 27 ) {

      System.out.println("OK2");

    } else {

      System.out.println("NG2:[27]-->["+y+"]");

    }

  }

}