FULL PRODUCT VERSION :
java version "9.0.1"
Java(TM) SE Runtime Environment (build 9.0.1+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
 Microsoft Windows [Version 10.0.16299.192]


A DESCRIPTION OF THE PROBLEM :
In some configurations, when the public getter and protected setter are defined in a generic abstract parent class, and the setter is overridden with a public method in a concrete subclass, Introspector does not find a write method for the corresponding property.

This behaviour seems to be dependent on the specific classes (and possibly names) involved.

REGRESSION. Last worked in version 8u161

ADDITIONAL REGRESSION INFORMATION:
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the attached Java file.

Run the compiled class BeansMain.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
class
  >> public final native java.lang.Class java.lang.Object.getClass()
  << null
value
  >> public java.lang.Object Parent.getValue()
  << public void Child.setValue(java.lang.Runnable)


ACTUAL -
class
  >> public final native java.lang.Class java.lang.Object.getClass()
  << null
value
  >> public java.lang.Object Parent.getValue()
  << null

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.beans.*;

class Parent<T> {
    T value;
    public T getValue() {
        return value;
    }
    protected void setValue(T value) {
        this.value = value;
    }
}

class Child extends Parent<Runnable> {
    @Override
    public void setValue(Runnable value) {
        super.setValue(value);
    }
}

public class BeansMain {
    public static void main(String[] args) throws IntrospectionException {
        BeanInfo beanInfo = Introspector.getBeanInfo(Child.class);
        for (PropertyDescriptor pd : beanInfo.getPropertyDescriptors()) {
            System.out.println(pd.getName() + "\n >> " + pd.getReadMethod() + "\n << " + pd.getWriteMethod());
        }
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Override both getter and setter in the subclass.