• Table of Contents

  • 52 Keywords in Java
  • 1. abstract
  • 2. assert
  • 3. boolean
  • 4. break
  • 5.
    

    

    . byte

  • 6. case
  • 7. catch
  • 8. char
  • 9. class
  • 10. const
  • 11. continue
  • 12. default
  • 13. do
  • 14. double
  • 15. else
  • 16. enum
  • 17. extends
  • 18. final
  • 19. finally
  • 20. float
  • 21. for
  • 22. goto
  • 23. if
  • 24. implements
  • 25. import
  • 26. instanceof
  • 27. int
  • 28. interface
  • 29. long
  • 30. native
  • 31. new
  • 32. null
  • 33. package
  • 34. private
  • 35. protected
  • 36. public
  • 37. return
  • 38. short
  • 39. static
  • 40. strictfp
  • 41. super
  • 42. switch

52 Keywords in Java

Java is one of the most popular programming languages in the world, known for its versatility and robustness. Whether you are a beginner or an experienced developer, understanding key Java keywords is essential for writing efficient and effective code. In this article, we will explore 52 important keywords in Java that every programmer should know.

1. abstract

The abstract keyword is used to declare abstract classes and methods in Java. Abstract classes cannot be instantiated, and methods declared as abstract must be implemented by subclasses.

2. assert

The assert keyword is used for debugging purposes to test assumptions in code. It throws an AssertionError if the assertion is false.

3. boolean

The boolean keyword is used to declare a variable that can hold either true or false values.

4. break

The break keyword is used to exit a loop or switch statement.

5. byte

The byte keyword is used to declare an 8-bit signed integer.

6. case

The case keyword is used in switch statements to specify different cases.

7. catch

The catch keyword is used to handle exceptions in Java.

8. char

The char keyword is used to declare a single character.

9. class

The class keyword is used to declare a class in Java.

10. const

The const keyword is not used in Java.

11. continue

The continue keyword is used to skip the current iteration of a loop and continue with the next iteration.

12. default

The default keyword is used in switch statements to specify the default case.

13. do

The do keyword is used to start a do-while loop.

14. double

The double keyword is used to declare a double-precision floating-point number.

15. else

The else keyword is used in if-else statements to specify the else block.

16. enum

The enum keyword is used to declare an enumeration in Java.

17. extends

The extends keyword is used to indicate that a class inherits from another class.

18. final

The final keyword is used to declare constants, prevent inheritance, and make methods unchangeable.

19. finally

The finally keyword is used in try-catch-finally blocks to specify code that should always be executed.

20. float

The float keyword is used to declare a single-precision floating-point number.

21. for

The for keyword is used to start a for loop.

22. goto

The goto keyword is not used in Java.

23. if

The if keyword is used to start an if statement.

24. implements

The implements keyword is used to indicate that a class implements an interface.

25. import

The import keyword is used to import classes, interfaces, and packages in Java.

26. instanceof

The instanceof keyword is used to check if an object is an instance of a particular class or interface.

27. int

The int keyword is used to declare a 32-bit signed integer.

28. interface

The interface keyword is used to declare an interface in Java.

29. long

The long keyword is used to declare a 64-bit signed integer.

30. native

The native keyword is used to indicate that a method is implemented in native code.

31. new

The new keyword is used to create new objects in Java.

32. null

The null keyword is used to represent a null reference.

33. package

The package keyword is used to declare a package in Java.

34. private

The private keyword is used to specify that a member is accessible only within its own class.

35. protected

The protected keyword is used to specify that a member is accessible within its own package and by subclasses.

36. public

The public keyword is used to specify that a member is accessible from any other class.

37. return

The return keyword is used to return a value from a method.

38. short

The short keyword is used to declare a 16-bit signed integer.

39. static

The static keyword is used to declare static variables and methods that belong to the class rather than instances of the class.

40. strictfp

The strictfp keyword is used to restrict floating-point calculations to ensure portability.

41. super

The super keyword is used to refer to the superclass of a class.

42. switch

The switch