Reserved Keywords in Java

In Java, a reserved term is used as a code key called a keyword. Because they are predefined, these terms cannot be used for anything else. They cannot serve as a name for a variable, an object, or any other type of identifier. In Java, there are 51 reserved phrases or keywords.

Java Reserved Keywords List

keyword	Description
Abstract	signifies that the class or method that comes after this keyword is abstract and must be implemented by a subclass.
Assert	Declaring assertions or assumptions in a program is made easier by the assert keyword. If an assertion is true, the program continues normally; if not, an AssertionError is raised at runtime, and the program terminates.
Boolean	defines true and false as the two Boolean values 0 and 1.
Break	used to escape loops or iterative structures.
Byte	capable of storing 8-bit data as a data type.
Case	marks sentences (cases) within a Switch statement.
Catch	used to handle exceptions thrown by the try block.
Car	Unsigned 16-bit Unicode characters can be stored in this data format.
Class	utilized to introduce a new class.
Continue	It is beneficial to assume control outside of the loop and move on to the following iteration.
Default	Describes the "block of code" that will automatically run in a Switch statement.
Do	The "do-while" loop's initial keyword.
Double	64-bit number-holding data type (floating-point).
Else	The "if" statements, defines the else component.
Enum	a Java declaration for enumerations.
Extends	suggests inheritance. From another class, a class can be descended or inherited.
Final	creates a method or variable with fixed values that cannot be changed.
Finally	Specifies the finally block, which is what happens after the try-catch block, whether or not the exception was caught.
Float	capable of storing 32-bit floating-point numbers.
For	shows that a "for" loop has begun.
If	begins the "if" sentence.
Implements	shows whether a class complies with an interface.
Import	used to add more packages or classes to the program or to reference them.
InstanceOf	a tool for determining whether an object is an instance of the specified class.
Int	Contains a 32-bit integer value in a data type.
Interface	used when announcing an interface.
Long	64-bit integer values are stored in a data type.
Native	utilized to denote native code (platform-specific).
New	Operator for producing new objects.
Null	represents a null reference.
Package	Java package declaration keyword.
Private	A variable or method can only be accessed by the class in which it is declared when it is marked with the private access specified sign.
Protected	A protected access specifier is indicated by this term. When a variable or method is protected, only the class in which it is defined, its subclass, and other classes in the same package are permitted to access that variable or method.
Public	Public access specifiers are denoted by the keyword public. An application can access a variable, method, class, or interface that has been marked public.
Return	The calling method receives the value of a method via return. Additionally, it's utilized to give the calling method back control.
Short	16-bit integer number values are stored in a data type.
Static	When a method or variable is marked as static, it means it cannot be instantiated.
Strictfp	When calculating floating point values, the keyword strictfp limits the precision and rounding. Portability is ensured.
Super	the class's base or superclass is indicated.
Switch	Identifies a switch statement that evaluates a condition and runs different cases based on the test result.
Synchronized	Identifies synchronized code blocks for multithreaded programs, such as important portions.
This	The word "this" designates the active object.
Throw	as a throwable exception.
Throws	This shows the exception that a method is capable of throwing.
Transient	specifies a temporary variable that is not a component of an object's persistent state.
Try	Aim for keywords to start a block that contains potentially exception-raising code.
Void	No return value is indicated.
Volatile	used to specify variables not kept in the main memory. They are modifiable asynchronously.
While	A while loop is started by the word while.
Const	Java no longer supports the "const" keyword.
Goto	Java no longer supports the 'goto' keyword.
True, false, and null	True, false, and null are literals. Nevertheless, they are ineffective as program identifiers.