Uninit4.java

public class Uninit4 {

    class Mam {
        Object a = new Object();
    }

    //:: error: (initialization.fields.uninitialized)
    class BadSon {
        Object b;
    }

    class GoodSon {
        Object b = new Object();
    }

    class WeirdSon {
        Object b;

        //:: error: (initialization.fields.uninitialized)
        WeirdSon() {
            super();
        }
    }

    class Daughter {
        Object b;

        //:: error: (initialization.fields.uninitialized)
        Daughter() {}

        Daughter(Object val) {
            this();
            b = val;
        }
    }
}