Performing multiple task — Java Technical Interview Questions & Answers

Performing multiple task

Performing multiple task

  • Performing multiple task is part of Java concurrency. A thread is a path of work inside a process. Create with Thread or Runnable, then call start() — not run(). run() only runs on the same thread.
  • For Performing multiple task: if two threads share data, synchronize or the result can be wrong. sleep pauses. join waits for another thread to finish. daemon threads die when all user threads finish.
  • Performing multiple task deadlock: two threads wait for each other’s lock forever. Avoid by locking in the same order. Don’t guess thread order — it can change every run.
  • Let's take this on the board with one tiny Main class — no extra files. Performing multiple task — start() schedules the thread; main also prints — order may vary. Start from main, go line by line, and stop at each print. That output is the proof for Performing multiple task.

Technical Interview Tip: start() vs run() is a classic interview question.

Code Examples for Performing multiple task

Example

// Thread demo
public class Main {
  public static void main(String[] args) {
    Thread t = new Thread(() -> System.out.println("Hi from thread"));
    t.start();
    System.out.println("Hi from main");
  }
}

Performing multiple task — start() schedules the thread; main also prints — order may vary.

How to Explain Performing multiple task to an Interviewer

What is Performing multiple task?

Performing multiple task — thread = one path of work. start() schedules it. run() does not. Performing multiple task — shared data needs synchronization. Performing multiple task — sleep = pause. join = wait for other thread.

Why do we use Performing multiple task in Java?

Makes the program clearer or safer Performing multiple task — thread = one path of work. start() schedules it. run() does not.

Write one small example of Performing multiple task.

Show syntax Say what prints

What mistake do beginners make with Performing multiple task?

Only the name, no example Performing multiple task — calling run() instead of start(). Deadlock = locks in wrong order.

Where is Performing multiple task used in a real program?

Day-to-day Java code