35 lines
1.4 KiB
Java
35 lines
1.4 KiB
Java
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/*--------------------------------------------------------------------------*/
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/* File name : err3.java */
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/* : */
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/* Cause : Evaluation sequence of the formula which used */
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/* : the substitution operator is not performed correctly. */
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/* : */
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/* Message : NG1:[27]-->[9] */
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/* : NG2:[27]-->[9] */
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/* : */
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/* Note : JLS 15.6 Evaluation Order (p305) */
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/* S15.6.1 Evaluate Left-Hand Operand First */
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/* : A formula should be evaluated to 9*3 instead of 3*3. */
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/*--------------------------------------------------------------------------*/
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public class err3 {
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public static void main(String[] args) {
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int x = 9;
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x *= (x = 3);
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if ( x == 27 ) {
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System.out.println("OK1");
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} else {
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System.out.println("NG1:[27]-->["+x+"]");
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}
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int y = 9;
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y = y * (y = 3);
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if ( y == 27 ) {
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System.out.println("OK2");
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} else {
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System.out.println("NG2:[27]-->["+y+"]");
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}
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}
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}
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