Making load and getproeprty methods of java.util.Properties thread safe

Question

I am using these statements to load java program properties at runtime.

 public static void Init(String confFile) {
        try {
            prop.load(new FileInputStream(confFile));
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

Same class has the following method for reading properties

 public static String GetProperty(String key) {
        return prop.getProperty(key);
    }

My question is, if I call Init and GetProperty simultaneously without the synchronized block will it cause a problem?

I read this java Properties . here it says that the getProperty method is thread safe. yes, I know this, because I have been using it with multiple threads, but now while one thread is loading new properties and others are calling the getProperty method I think it can cause problems

Answer 1

Yes, it is threadsafe.

• Properties extends Hashtable, which is threadsafe.
• Its load() methods are synchronized
• Its default properties are also a Hashtable