New analyzer_experimental snapshot.

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

 library java.core;
 
 import "dart:math" as math;
 
 class JavaSystem {
   static int currentTimeMillis() {
     return (new DateTime.now()).millisecondsSinceEpoch;
   }
 
   static void arraycopy(List src, int srcPos, List dest, int destPos, int length) {
@@ skipping 404 matching lines @@
 void javaMapPutAll(Map target, Map source) {
   source.forEach((k, v) {
     target[k] = v;
   });
 }
 
 bool javaStringEqualsIgnoreCase(String a, String b) {
   return a.toLowerCase() == b.toLowerCase();
 }
 
+bool javaStringRegionMatches(String t, int toffset, String o, int ooffset, int len) {
+  if (toffset < 0) return false;
+  if (ooffset < 0) return false;
+  var tend = toffset + len;
+  var oend = ooffset + len;
+  if (tend > t.length) return false;
+  if (oend > o.length) return false;
+  return t.substring(toffset, tend) == o.substring(ooffset, oend);
+}
+
 bool javaBooleanOr(bool a, bool b) {
   return a || b;
 }
 
 class JavaStringBuilder {
   StringBuffer sb = new StringBuffer();
   String toString() => sb.toString();
   JavaStringBuilder append(x) {
     sb.write(x);
     return this;
@@ skipping 42 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;
 }