Exploring Essential Java Keywords: A Comprehensive Guide

Java keywordes

Java has a set of keywords that are reserved words that cannot be used as variables, methods, classes, or any other identifiers:

Java Keywords

Java Keywords

Sno Keyword Description
1 abstract Used to declare abstract classes and methods.
2 assert Used to assert the truth of a boolean expression.
3 boolean Data type representing true or false values.
4 break Used to terminate a loop or switch statement.
5 byte Data type representing 8-bit signed integer values.
6 case Used in switch statements to specify different possible execution paths.
7 catch Used to catch exceptions in exception handling.
8 char Data type representing a single 16-bit Unicode character.
9 class Used to declare a class.
10 const Reserved keyword but not used.
11 continue Used to skip the current iteration of a loop and continue to the next one.
12 default Used in switch statements as a default case when no other case matches.
13 do Starts a do-while loop.
14 double Data type representing double-precision 64-bit floating point values.
15 else Used to execute a block of code if the condition of an if statement is false.
16 enum Used to declare an enumeration.
17 extends Used to indicate that a class is derived from another class.
18 final Used to declare constants, make methods not overrideable, or classes not inheritable.
19 finally Used to execute code after try-catch blocks, whether an exception is thrown or not.
20 float Data type representing single-precision 32-bit floating point values.
21 for Starts a for loop.
22 goto Reserved keyword but not used.
23 if Used to execute a block of code if a condition is true.
24 implements Used to indicate that a class implements an interface.
25 import Used to import packages or specific classes in Java.
26 instanceof Used to test if an object is an instance of a specific class or interface.
27 int Data type representing 32-bit signed integer values.
28 interface Used to declare an interface.
29 long Data type representing 64-bit signed integer values.
30 native Used to declare a native method, which is implemented in platform-dependent code.
31 new Used to create new objects.
32 null Represents the absence of a value or a null reference.
33 package Used to declare a package, which organizes classes and interfaces.
34 private Access modifier indicating that a method or variable is accessible only within its own class.
35 protected Access modifier indicating that a method or variable is accessible within its own package and by subclasses.
36 public Access modifier indicating that a method or variable is accessible from any other class.
37 return Used to exit from a method, optionally returning a value.
38 short Data type representing 16-bit signed integer values.
39 static Used to declare a static method or variable, which belongs to the class rather than any instance of the class.
40 strictfp Used to restrict floating-point calculations to ensure portability.
41 super Used to refer to the immediate parent class object.
42 switch Used to select one of many code blocks to be executed.
43 synchronized Used to restrict multiple threads from executing a block of code simultaneously.
44 this Used to refer to the current object.
45 throw Used to explicitly throw an exception.
46 throws Used to declare exceptions that a method might throw.
47 transient Used to indicate that a field should not be serialized.
48 try Starts a block of code to be tested for exceptions.
49 void Used to declare that a method does not return any value.
50 volatile Used to indicate that a variable's value will be modified by different threads.
51 while Starts a while loop.

Leave a Comment

Your email address will not be published. Required fields are marked *