Handle exception while getting modification stamp

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

 library java.io;
 
 import "dart:io";
 
 import 'package:path/path.dart' as pathos;
 
 import 'java_core.dart' show JavaIOException;
 
 class JavaFile {
   static final String separator = Platform.pathSeparator;
@@ skipping 53 matching lines @@
   bool isDirectory() {
     return _newDirectory().existsSync();
   }
   bool isExecutable() {
     return _newFile().statSync().mode & 0x111 != 0;
   }
   bool isFile() {
     return _newFile().existsSync();
   }
   int lastModified() {
-    if (!_newFile().existsSync()) return 0;
-    return _newFile().lastModifiedSync().millisecondsSinceEpoch;
-
+    try {
+      return _newFile().lastModifiedSync().millisecondsSinceEpoch;
+    } catch (exception) {
+      return -1;
+    }
   }
   List<JavaFile> listFiles() {
     var files = <JavaFile>[];
     var entities = _newDirectory().listSync();
     for (FileSystemEntity entity in entities) {
       files.add(new JavaFile(entity.path));
     }
     return files;
   }
   String readAsStringSync() => _newFile().readAsStringSync();
@@ skipping 45 matching lines @@
       }
     }
     return null;
   }
   static String setProperty(String name, String value) {
     String oldValue = _properties[name];
     _properties[name] = value;
     return oldValue;
   }
 }