Initialize ThreadLocal value for all instances/threads.

Values initialized using set() method is visible to that particular thread.

However without using set() method, we could initialize the value for all the instances of ThreadLocal object by subclassing ThreadLocal class and overriding the initialValue() method. See the below example.

private ThreadLocal threadLocalVar = new ThreadLocal<String>() {
    @Override protected String initialValue() {
        return "initialized value.";
    }
}; 

With the initial value being set, all threads will see the same value "initialized value" when calling get() method until set() method gets invoked.

Earn bitcoins upto $250 (free), invest in other Cryptocurrencies when you signup with blockfi. Use the referral link: Signup now and earn!

Using BlockFi, don't just buy crypto - start earning on it. Open an interest account with up to 8.6% APY, trade currencies, or borrow money without selling your assets.

Join CoinBase! We'll both receive $10 in free Bitcoin when they buy or sell their first $100 on Coinbase! Available in India also. Use the referral Join coinbase!

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.