More fixes for java2dart and status files.

pkg/analyzer_experimental/lib/src/generated/java_io.dart

 library java.io;
 
 import "dart:io";
 
 class JavaSystemIO {
   static Map<String, String> _properties = new Map();
   static String getProperty(String name) {
     {
       String value = _properties[name];
       if (value != null) {
@@ skipping 45 matching lines @@
 }
 
 class JavaFile {
   static final String separator = Platform.pathSeparator;
   static final int separatorChar = Platform.pathSeparator.codeUnitAt(0);
   Path _path;
   JavaFile(String path) {
     this._path = new Path(path);
   }
   JavaFile.relative(JavaFile base, String child) {
-    this._path = base._path.join(new Path(child));
+    if (child.isEmpty) {
+      this._path = base._path;
+    } else {
+      this._path = base._path.join(new Path(child));
+    }
   }
   JavaFile.fromUri(Uri uri) : this(uri.path);
   int get hashCode => _path.hashCode;
   bool operator ==(other) {
     return other is JavaFile && other._path.toNativePath() == _path.toNativePath();
   }
   String getPath() => _path.toNativePath();
   String getName() => _path.filename;
   String getParent() {
     var result = _path.directoryPath.toNativePath();
@@ skipping 29 matching lines @@
     List<JavaFile> files = [];
     List<FileSystemEntity> entities = _newDirectory().listSync();
     for (FileSystemEntity entity in entities) {
       files.add(new JavaFile(entity.path));
     }
     return files;
   }
   File _newFile() => new File.fromPath(_path);
   Directory _newDirectory() => new Directory.fromPath(_path);
 }