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What are the scenarios suitable for using ThreadLocal class?

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Pragya Keshap answered on February 4, 2023 Popularity 1/10 Helpfulness 1/10

answer What are the scenarios suitable for using ThreadLocal class?

What are the scenarios suitable for using ThreadLocal class?

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We can use instance of ThreadLocal class to transport information

within an application.

One use case is to transport security or login information within an

instance of ThreadLocal so that every method can access it.

Another use case is to transport transaction information across an

application, without using the method-to-method communication.

public class ThreadSafeDateFormat {
    //SimpleDateFormat is not thread-safe, so give one instance to each thread
    private static final ThreadLocal<SimpleDateFormat> formatter = ThreadLocal.withInitial(() -> new SimpleDateFormat("yyyy.MM.dd HHmm a"));

    public static String formatIt(Date date) {
        return formatter.get().format(date);
    }

    public static void main(String[] args) {
        final String formatIt = ThreadSafeDateFormat.formatIt(new Date());
        System.out.println("formatIt = " + formatIt);
    }
}

https://www.javacodemonk.com/threadlocal-with-examples-usecases-in-java-3912002e

Popularity 1/10 Helpfulness 1/10 Language java

Source: Grepper

Tags: java scenarios using

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Contributed on Feb 04 2023

Pragya Keshap

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What are the scenarios suitable for using ThreadLocal class?

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