src/java.base/share/classes/com/sun/java/util/jar/pack/Attribute.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

@@ -994,11 +994,11 @@
                         for (int cp = 0, endp;; cp = endp+1) {
                             // Look for multiple case tags:
                             endp = cstr.indexOf(',', cp);
                             if (endp < 0)  endp = cstrlen;
                             String cstr1 = cstr.substring(cp, endp);
-                            if (cstr1.length() == 0)
+                            if (cstr1.isEmpty())
                                 cstr1 = "empty";  // will fail parse
                             int value0, value1;
                             // Check for a case range (new in 1.6).
                             int dash = findCaseDash(cstr1, 0);
                             if (dash >= 0) {