How can I initialize an element of an array field?

Question

I am having trouble initializing an array element inside my class. How can I assign an initial value at a specific index of my array field?

public class Account{
    int num[] = new int[50];

    // I can't assign a value like this:    
    num[0] = 12345;
}

Answer 1

You can initialize the array in the constructor.

Just write:

public Account(){
    num[0]=12345;
}

inside your class.

The other possibility is to use an initialisation block(but this is less flexible and difficult du document):

{
    num[0]=12345;
}

(Also in your class)