This article describes the list of keywords in the Java programming language. The keywords const and goto are reserved, even though they are not currently used. true, false, and null might seem like keywords, but they are actually literals; you cannot use them as identifiers in your programs.

Apr 17, 2025 · In Java, keywords are the reserved words that have some predefined meanings and are used by the Java compiler for some internal process or represent some predefined actions. These words cannot be used as identifiers such as variable names, method names, class names, or object names.

Java has a set of keywords that are reserved words that cannot be used as variables, methods, classes, or any other identifiers: A non-access modifier. Used for classes and methods: An abstract class cannot be used to create objects (to access it, it …

In the Java programming language, a keyword is any one of 68 reserved words [1] that have a predefined meaning in the language. Because of this, programmers cannot use keywords in some contexts, such as names for variables, methods, classes, or as any other identifier. [2] .

You cannot use keywords like int, for, class, etc as variable name (or identifiers) as they are part of the Java programming language syntax. Here's the complete list of all keywords in Java programming.

Mar 9, 2024 · This article gives you an overview of all keywords in the Java programming language with explanation and code examples (updated to Java 14). Understand the meaning of each Java keyword will help you write better and more precise code, e.g. know when to use public or private for a variable or class.

Sep 20, 2024 · class keyword: To construct a class, we use the class keyword. class name: The name of the class should usually start with a capital letter. Superclass (optional): If the class has any superclass, we use the extends keyword and we …

Here is a list of keywords in the Java programming language. You cannot use any of the following as identifiers in your programs. The keywords const and goto are reserved, even though they are not currently used.

Feb 1, 2021 · Using these keywords Java understands how to store, load, and use variables or identifiers in the programs. Keywords cannot be used as identifiers i.e. Class names, variables names, or method names in Java.

Mar 29, 2025 · Keywords are particular words that act as a key to a code. These are predefined words by Java so they cannot be used as a variable or object name or class name. Java boolean keyword is used to declare a variable as a boolean type. It can hold True and False values only.