115     String strNull = null;  in test_String_length()  local
117       strNull.length();  in test_String_length()
130     String strNull = null;  in test_String_isEmpty()  local
132       strNull.isEmpty();  in test_String_isEmpty()
210     String strNull = null;  in test_String_charAtExc()  local
212       strNull.charAt(0);  in test_String_charAtExc()
368     String strNull = null;  in testIndexOfNull()  local
370       testNullIndex(strNull, 'a');  in testIndexOfNull()
375       testNullIndex(strNull, 'a', 0);  in testIndexOfNull()
380         testNullIndex(strNull, 'a', -1);  in testIndexOfNull()
386   private static int testNullIndex(String strNull, int c) {  in testNullIndex()  argument
387     return strNull.indexOf(c);  in testNullIndex()
390   private static int testNullIndex(String strNull, int c, int startIndex) {  in testNullIndex()  argument
391     return strNull.indexOf(c, startIndex);  in testNullIndex()