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  1. How to create a thread without implementing the Runnable interface in Java?

  2. Importance of return type in Java?

  3. How can we implement a custom iterable in Java?

  4. How can we print all the capital letters of a given string in Java?

  5. How to read the data from a CSV file in Java?

  6. How to detect the value change of a JSlider in Java?

  7. When to call the Thread.run() instead of Thread.start() in Java?

  8. What is the use of Object Cloning in Java?

  9. How can we sort a string without using predefined methods in Java?

  10. How to select different cells of a JTable programmatically in Java?

  11. Can we define multiple methods in a class with the same name in Java?

  12. Importance of yield() method in Java?

  13. How can we avoid a deadlock in Java?

  14. How to implement a rollover effect for a JButton in Java?

  15. What is the purpose of overriding a finalize() method in Java?

  16. Importance of join() method in Java?

  17. What is the use of Thread.sleep() method in Java?

  18. How can we call the invokeLater() method in Java?

  19. How many ways to call garbage collector (GC) in Java?

  20. Importance of SerialVersionUID keyword in Java?
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