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  1. How to handle the exception using UncaughtExceptionHandler in Java?

  2. How to use the substring() method of java.lang.String class in Java?

  3. What is the order of execution of non-static blocks with respect to a constructor in Java?

  4. Why do we need a wrapper class in Java?

  5. Explain the basic structure of a program in Java?

  6. Is it possible to assign a reference to this in java?

  7. How to create a custom unchecked exception in Java?

  8. When will be an IllegalStateException (unchecked) thrown in Java?

  9. How can we create a login form in Java?

  10. Is Swing thread-safe in Java?

  11. How to read the contents of a JSON file using Java?

  12. How to read/parse JSON array using Java?

  13. How to Write/create a JSON file using Java?

  14. How to Write/create a JSON array using Java?

  15. What are the differences between GridLayout and GridBagLayout in Java?

  16. How many ways are there to register a driver in Java?

  17. What are the differences between an Integer and an int in Java?

  18. What are the differences between JFrame and JDialog in Java?

  19. How can we implement a splash screen using JWindow in Java?

  20. How to set local date/time in a table using LocalDateTime class in Java?
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