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public class MainClass
{
    int c = 3;
    public  int abc(int a)
    {
        a = a + c;
        return a;
    }

    public static void main(String[] args)
    {
        MainClass z = new MainClass();

        int x = z.abc(4);
        System.out.println(x);
    }
}


// If you dont want to access external methods through object declare it as static