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Java Java Objects Meet Objects Final

Posted by Ashish Shah
Ashish Shah
1,468 Points

You can declare a final variable and later initialize it. true or false?

You can declare a final variable and later initialize it. true or false? Please explain

1 Answer

andren
andren
28,558 Points
andren
andren
28,558 Points

That statement is true. When you declare a variable with the final keyword it cannot be reassigned (be given a new value) after it has been assigned. But you can leave it empty during the declaration and provide it with it's value later.

Examples:

1:

final String example = "Hello World!"; // Creates a final String set to "Hello World"
example = "Hello!" // This is invalid since the example variable has already been set to "Hello World!"

2:

final String example; // Creates an empty final String
example = "Hello!" // This is valid since the example variable has not been assigned a value yet.
example = "Hello World" // This is invalid since the example variable has already been set to "Hello!"