public class Derive extends Base 
{
    private Member m1 = new Member("Member 1");
    {
        System.out.println("Initial Block()");
    }

    public Derive() {
        System.out.println("Derive()");
    }

    private Member m2 = new Member("Member 2");
    private int i = getInt();

    private int getInt() 
    {
        System.out.println("getInt()");
        return 2;
    }

    public static void main(String[] args)
    {
        new Derive();
    }
}

class Base
{
    public Base() 
    {
        System.out.println("Base()");
    }
}

class Member 
{
    public Member(String m) 
    {
        System.out.println("Member() "+m);
    }
}
/*程序输出：
Base()
Member()  Member 1
Initial Block()
Member()  Member 2
getInt()
Derive()
*/