Cant declare an array of classes outside Main in Java

Question

I want to create an array of classes outside Main class, but it won\'t compile. If i put ObjectArray code into Main class everything works fine. I tried making a contructor, ext

Answer 1

The following code should be inside the constructor:

obj[0] = new Account(); 
obj[1] = new Account();  
obj[0].setData(1,2);
obj[1].setData(3,4);

Also, change the name of toString in ObjectArray to something else e.g. showData. The method name toString conflicts with the one in its default superclass, Object.

Complete code:

class ObjectArray {
    Account obj[] = new Account[2];

    ObjectArray() {
        obj[0] = new Account();
        obj[1] = new Account();
        obj[0].setData(1, 2);
        obj[1].setData(3, 4);
    }

    public void showData() {
        obj[0].showData();
        obj[1].showData();
    }
}

class Account {
    int a, b;

    public void setData(int c, int d) {
        a = c;
        b = d;
    }

    public void showData() {
        System.out.println("Value of a =" + a);
        System.out.println("Value of b =" + b);
    }
}

public class Main {
    public static void main(String args[]) {
        ObjectArray dd = new ObjectArray();
        dd.showData();
    }
}

Output:

Value of a =1
Value of b =2
Value of a =3
Value of b =4