When to Call System.out.flush() in Java?

Date: 2024-01-10

In Java, System.out.flush() forces immediate writing of buffered output to the console. Standard output uses buffering for efficiency, but flush() is crucial when real-time display is needed, such as displaying progress updates during lengthy computations. Without it, output might be delayed, impacting user experience. Using flush() ensures immediate visibility of updates, improving responsiveness and providing continuous feedback to the user. Judicious use of System.out.flush() enhances the effectiveness of Java programs requiring dynamic console updates.

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