Remove StringUtils from java_core.

pkg/analyzer/test/generated/test_support.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.test.generated.test_support;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart' show AstNode, SimpleIdentifier;
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 442 matching lines @@
    */
   void _fail(List<AnalysisError> expectedErrors) {
     StringBuffer buffer = new StringBuffer();
     buffer.write("Expected ");
     buffer.write(expectedErrors.length);
     buffer.write(" errors:");
     for (AnalysisError error in expectedErrors) {
       Source source = error.source;
       LineInfo lineInfo = _lineInfoMap[source];
       buffer.writeln();
+      String sourceName = source == null ? '' : source.shortName;
       if (lineInfo == null) {
         int offset = error.offset;
-        StringUtils.printf(buffer, "  %s %s (%d..%d)", [
-          source == null ? "" : source.shortName,
-          error.errorCode,
-          offset,
-          offset + error.length
-        ]);
+        buffer.write('  $sourceName ${error.errorCode} '
+            '($offset..${offset + error.length})');
       } else {
         LineInfo_Location location = lineInfo.getLocation(error.offset);
-        StringUtils.printf(buffer, "  %s %s (%d, %d/%d)", [
-          source == null ? "" : source.shortName,
-          error.errorCode,
-          location.lineNumber,
-          location.columnNumber,
-          error.length
-        ]);
+        int lineNumber = location.lineNumber;
+        int columnNumber = location.columnNumber;
+        buffer.write('  $sourceName ${error.errorCode} '
+            '($lineNumber, $columnNumber/${error.length})');
       }
     }
     buffer.writeln();
     buffer.write("found ");
     buffer.write(_errors.length);
     buffer.write(" errors:");
     for (AnalysisError error in _errors) {
       Source source = error.source;
       LineInfo lineInfo = _lineInfoMap[source];
       buffer.writeln();
+      String sourceName = source == null ? '' : source.shortName;
       if (lineInfo == null) {
         int offset = error.offset;
-        StringUtils.printf(buffer, "  %s %s (%d..%d): %s", [
-          source == null ? "" : source.shortName,
-          error.errorCode,
-          offset,
-          offset + error.length,
-          error.message
-        ]);
+        buffer.write('  $sourceName ${error.errorCode} '
+            '($offset..${offset + error.length}): ${error.message}');
       } else {
         LineInfo_Location location = lineInfo.getLocation(error.offset);
-        StringUtils.printf(buffer, "  %s %s (%d, %d/%d): %s", [
-          source == null ? "" : source.shortName,
-          error.errorCode,
-          location.lineNumber,
-          location.columnNumber,
-          error.length,
-          error.message
-        ]);
+        int lineNumber = location.lineNumber;
+        int columnNumber = location.columnNumber;
+        buffer.write('  $sourceName ${error.errorCode} '
+            '($lineNumber, $columnNumber/${error.length}): ${error.message}');
       }
     }
     fail(buffer.toString());
   }
 
   /**
    * Search through the given list of errors for an error that is equal to the target error. If one
    * is found, remove it from the list and return `true`, otherwise return `false`
    * without modifying the list.
    *
@@ skipping 132 matching lines @@
     return UriKind.FILE_URI;
   }
 
   bool operator ==(Object other) {
     if (other is TestSource) {
       return other.uri == uri;
     }
     return false;
   }
 }