New analyzer snapshot.

editor/util/plugins/com.google.dart.java2dart/resources/java_core.dart

 library java.core;
 
 import "dart:math" as math;
 
 final Stopwatch nanoTimeStopwatch = new Stopwatch();
 
 class JavaSystem {
   static int currentTimeMillis() {
     return (new DateTime.now()).millisecondsSinceEpoch;
   }
@@ skipping 202 matching lines @@
 class StringUtils {
   static List<String> split(String s, [String pattern = '']) => s.split(pattern);
   static String replace(String s, String from, String to) => s.replaceAll(from, to);
   static String repeat(String s, int n) {
     StringBuffer sb = new StringBuffer();
     for (int i = 0; i < n; i++) {
       sb.write(s);
     }
     return sb.toString();
   }
+  static String join(Iterable iter, [String separator = " "]) {
+    return iter.join(separator);
+  }
 }
 
 class Math {
   static num max(num a, num b) => math.max(a, b);
   static num min(num a, num b) => math.min(a, b);
 }
 
 class RuntimeException extends JavaException {
   RuntimeException({String message: "", Exception cause: null}) :
     super(message, cause);
@@ skipping 17 matching lines @@
 
 class StringIndexOutOfBoundsException extends JavaException {
   StringIndexOutOfBoundsException(int index) : super('$index');
 }
 
 class IllegalStateException extends JavaException {
   IllegalStateException([message = ""]) : super(message);
 }
 
 class UnsupportedOperationException extends JavaException {
-  String toString() => "UnsupportedOperationException";
+  UnsupportedOperationException([message = ""]) : super(message);
 }
 
 class NoSuchElementException extends JavaException {
   String toString() => "NoSuchElementException";
 }
 
 class NumberFormatException extends JavaException {
   String toString() => "NumberFormatException";
 }
 
@@ skipping 170 matching lines @@
     if (!_matches.moveNext()) {
       return false;
     }
     _match = _matches.current;
     return true;
   }
   String group(int i) => _match[i];
   int start() => _match.start;
   int end() => _match.end;
 }