How to define a constant in Java

In Java, the final keyword can be used to define a constant that cannot be changed after initialization.

The naming convention for constants is to use all capital letters and underscores to separate multiple words. For example:

final int MAX_VALUE = 10;
final double PI = 3.14159;
final String MESSAGE = "Hello, world!";

In Java, it is common practice to use the final modifier to declare constants, ensuring that their values cannot be changed.