src/share/classes/java/math/BigDecimal.java

rev 7624 : 6480539: BigDecimal.stripTrailingZeros() has no effect on zero itself ("0.0")
Summary: Make stripTrailingZeros() return BigDecimal.ZERO if the BigDecimal is numerically equal to zero.
Reviewed-by: darcy
Contributed-by: Brian Burkhalter <brian.burkhalter@oracle.com>

@@ -2590,18 +2590,22 @@
      * this one but with any trailing zeros removed from the
      * representation.  For example, stripping the trailing zeros from
      * the {@code BigDecimal} value {@code 600.0}, which has
      * [{@code BigInteger}, {@code scale}] components equals to
      * [6000, 1], yields {@code 6E2} with [{@code BigInteger},
-     * {@code scale}] components equals to [6, -2]
+     * {@code scale}] components equals to [6, -2].  If
+     * this BigDecimal is numerically equal to zero, then
+     * {@code BigDecimal.ZERO} is returned.
      *
      * @return a numerically equal {@code BigDecimal} with any
      * trailing zeros removed.
      * @since 1.5
      */
     public BigDecimal stripTrailingZeros() {
-        if(intCompact!=INFLATED) {
+        if (intCompact == 0 || (intVal != null && intVal.signum() == 0)) {
+            return BigDecimal.ZERO;
+        } else if (intCompact != INFLATED) {
             return createAndStripZerosToMatchScale(intCompact, scale, Long.MIN_VALUE);
         } else {
             return createAndStripZerosToMatchScale(intVal, scale, Long.MIN_VALUE);
         }
     }