src/java.base/share/classes/java/util/Scanner.java

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

*** 1295,1314 ****
          // Quoting the nonzero length locale-specific things
          // to avoid potential conflict with metacharacters
          nanString = "\\Q" + dfs.getNaN() + "\\E";
          infinityString = "\\Q" + dfs.getInfinity() + "\\E";
          positivePrefix = df.getPositivePrefix();
!         if (positivePrefix.length() > 0)
              positivePrefix = "\\Q" + positivePrefix + "\\E";
          negativePrefix = df.getNegativePrefix();
!         if (negativePrefix.length() > 0)
              negativePrefix = "\\Q" + negativePrefix + "\\E";
          positiveSuffix = df.getPositiveSuffix();
!         if (positiveSuffix.length() > 0)
              positiveSuffix = "\\Q" + positiveSuffix + "\\E";
          negativeSuffix = df.getNegativeSuffix();
!         if (negativeSuffix.length() > 0)
              negativeSuffix = "\\Q" + negativeSuffix + "\\E";
  
          // Force rebuilding and recompilation of locale dependent
          // primitive patterns
          integerPattern = null;
--- 1295,1314 ----
          // Quoting the nonzero length locale-specific things
          // to avoid potential conflict with metacharacters
          nanString = "\\Q" + dfs.getNaN() + "\\E";
          infinityString = "\\Q" + dfs.getInfinity() + "\\E";
          positivePrefix = df.getPositivePrefix();
!         if (!positivePrefix.isEmpty())
              positivePrefix = "\\Q" + positivePrefix + "\\E";
          negativePrefix = df.getNegativePrefix();
!         if (!negativePrefix.isEmpty())
              negativePrefix = "\\Q" + negativePrefix + "\\E";
          positiveSuffix = df.getPositiveSuffix();
!         if (!positiveSuffix.isEmpty())
              positiveSuffix = "\\Q" + positiveSuffix + "\\E";
          negativeSuffix = df.getNegativeSuffix();
!         if (!negativeSuffix.isEmpty())
              negativeSuffix = "\\Q" + negativeSuffix + "\\E";
  
          // Force rebuilding and recompilation of locale dependent
          // primitive patterns
          integerPattern = null;