Question

Like other variables, i want to assign final field type variable to blank but initialization is blocking by Java. What is the its logic? Maybe i want to use default values of my variables? for int = 0, string = null boolean = false etc…

public class Hello {

static final int myNumber; /* it is giving "The blank final field myNumber 
                                may not have been initialized" error in Eclipse */
}

Answer 1

A final variable can only be initialized once, either via an initializer or an assignment statement. It does not need to be initialized at the point of declaration: this is called a “blank final” variable.

change your code

public class Hello {

final int myNumber; 
 public Hello(int num){
 this.myNumber = num;
}

}

for static final variable use static block for initialization

static{
        myNumber = 0;
    }