java父类子类调用时序

public class Father {
    static {
        Log.i("lsy", "Father static init");
    }
    {
        Log.i("lsy", "Father class init");
    }
    Father() {
        Log.i("lsy", "Father start initMethod");
        initMethod();
        Log.i("lsy", "Father finish initMethod");
    }

    public void initMethod() {
        Log.i("lsy", "Father initMethod");
    }
}

public class Son extends Father {
    int aInt = 1;
    String aString = "1111";
    static String sString = "ccc";

    static {
        Log.i("lsy", "son static init");
        Log.d("lsy", "static orign sString= " + sString);
    }

    {
        Log.i("lsy", "son class init");
        Log.d("lsy", "orign aInt= " + aInt);
        Log.d("lsy", "orign aString= " + aString);
        Log.d("lsy", "orign sString= " + sString);
    }

    public Son() {
        super();
        Log.i("lsy", "son init");
        Log.d("lsy", "value aInt = " + aInt);
        Log.d("lsy", "value aString = " + aString);
        Log.d("lsy", "value sString = " + sString);

    }

    @Override
    public void initMethod() {
        super.initMethod();
        Log.i("lsy", "son initMethod");
        Log.d("lsy", "initD aInt= " + aInt);
        Log.d("lsy", "initD aString= " + aString);
        Log.d("lsy", "initD sString= " + sString);
    }
}

 Father static init
 son static init
 static orign sString= ccc
 Father class init
 Father start initMethod
 Father initMethod
 son initMethod
 initD aInt= 0
 initD aString= null
 initD sString= ccc
 Father finish initMethod
 son class init
 orign aInt= 1
 orign aString= 1111
 orign sString= ccc
 son init
 value aInt = 1
 value aString = 1111
 value sString = ccc

父类调用被子类重写的方法，可能引发空指针异常