Java | final keyword | Question 3

class Main {
 public static void main(String args[]){
    final int i;
    i = 20;
    i = 30;
    System.out.println(i);
 }
}

(A) 30
(B) Compiler Error
(C) Garbage value
(D) 0

Answer: (B)
Explanation: i is assigned a value twice. Final variables can be assigned values only one. Following is the compiler error “Main.java:5: error: variable i might already have been assigned”
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