Reserved Words in Java Explained - Java Tutorial For Absolute Beginners

In this video, I am talking about Reserved words in Java.

In the Java programming language reserved words are keywords that have a predefined meaning in the Java. So it means that you cannot use any of these words when naming a variable, method, class, or as any other identifier.

There are actually 51 reserved words in Java; Out of these 51 keywords, 49 are actually used in the code and only 2 are not used in the code. You do not necessarily need to memorize these keywords since. Due to their special functions in the language, most IDE like Eclipse or NetBeans for Java use syntax highlighting to display keywords in a different color in order to identify them easily.

If a reserved word was used as a variable, you would get an error or unexpected result.

Below is a list of reserved words in Java.

1. abstract -Specifies that a class or method will be implemented later, in a subclass
2. assert -Assert describes a predicate (a true–false statement) placed in a Java program to indicate that the developer thinks that the predicate is always true at that place.
3. Boolean – A data type that can hold True and False values only
4. break – A control statement for breaking out of loops
5. byte – A data type that can hold 8-bit data values
6. case – Used in switch statements to mark blocks of text
7. catch – Catches exceptions generated by try statements
8. char – A data type that can hold unsigned 16-bit Unicode characters
9. class -Declares a new class
10. continue -Sends control back outside a loop
11. default -Specifies the default block of code in a switch statement
12. do -Starts a do-while loop
13. double – A data type that can hold 64-bit floating-point numbers
14. else – Indicates alternative branches in an if statement
15. enum – A Java keyword used to declare an enumerated type. Enumerations extend the base class.
16. extends -Indicates that a class is derived from another class or interface
17. final -Indicates that a variable holds a constant value or that a method will not be overridden
18. finally -Indicates a block of code in a try-catch structure that will always be executed
19. float -A data type that holds a 32-bit floating-point number
20. for -Used to start a for loop
21. if -Tests a true/false expression and branches accordingly
22. implements -Specifies that a class implements an interface
23. import -References other classes
24. instanceof -Indicates whether an object is an instance of a specific class or implements an interface
25. int – A data type that can hold a 32-bit signed integer
26. interface – Declares an interface
27. long – A data type that holds a 64-bit integer
28. native -Specifies that a method is implemented with native (platform-specific) code
29. new – Creates new objects
30. null -Indica ... https://www.youtube.com/watch?v=KhAgNbiQN6M