Java Final keyword

finalKeywords do not allow you to modify or replace their original values or definitions. finalkeywords can be used in the following three contexts:

• Variable declaration

• class declaration

• Method declaration

Final variable

If a variable is declared final , it can only be assigned a value once. finalthe value of the variable cannot be modified after it is set. Variable declarations include declarations of local variables, form parameters of methods/constructors, instance variables, and class variables. To declare a variable as final , use the keyword in the variable declaration final .

1	finalintYES  = 1;

finalThe value of a variable is set only once, and it cannot be re-assigned. There are two ways to initialize final the value of a variable:

• The initialization is given at the time of declaration.

• Defer its initialization to a later time.

However, it must be initialized before the variable is read for the first time final .

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Java Final keyword