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8058643: (str) Re-examine hashCode implementation

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Reviewed-by: martin, alanb, sherman, redestad
This commit is contained in:
Aleksey Shipilev 2014-09-24 09:43:10 -07:00
parent f07521a354
commit e3bda3bd0a
1 changed files with 3 additions and 5 deletions
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8
jdk/src/java.base/share/classes/java/lang/String.java
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@ -1451,11 +1451,9 @@ public final class String
*/ */
public int hashCode() { public int hashCode() {
int h = hash; int h = hash;
if (h == 0 && value.length > 0) { if (h == 0) {
char val[] = value; for (char v : value) {
h = 31 * h + v;
for (int i = 0; i < value.length; i++) {
h = 31 * h + val[i];
} }
hash = h; hash = h;
} }