A constant in Java is an unchangeable value give to a variable.
For example:
int AGE = 28;
public class ConstantExample {
private static final int AGE = 28;
public static void main(String args[])
{
System.out.println("Age ="+AGE);
}}
The final keyword:
A final keyword tells Java compiler that the change in value assign to the variable is not allowed.
Constant naming conventions:
Use Upper case letters, for spaces use underscores.
For example:
int AGE = 28;
public keyword with constant:
It says that other classes in same Java project able to access the constant.
private keyword with constant:
It says that other classes in same Java project not able to access the constant.
static keyword with constant:
It makes constant accessible inside main().