When using java 8 update101, HashMap Entries cannot be cast to collection

After updating to Java 8 update 101, I encountered an exception in the following code It works well with Java 8 update 91

To access the keystore:

KeyStore ks = KeyStore.getInstance("WINDOWS-MY");
        ks.load(null,null);

        Field field =  ks.getClass().getDeclaredField("keyStoreSpi");
        field.setAccessible(true);

        KeyStoreSpi kss = (KeyStoreSpi) field.get(ks);

        Collection entries;

        field = kss.getClass().getEnclosingClass().getDeclaredField("entries");
        field.setAccessible(true);

        // This is where the exception happens
        entries = (Collection) field.get(kss);

        // I then have to loop on these entries,something like this:

        for (Object entry : entries) { //code }

Type conversion, exception thrown:

java.util.HashMap cannot be cast to java.util.Collection

Any recent changes in Java 8 update 101? How?

Solution

I confirm that it cannot use the following as test code

import java.util.HashMap;
import java.util.Collection;

public class HelloWorld {
   public static void main(String[] args) {
      HashMap map = new HashMap();
      Collection c;
      c = (Collection) map;
   }
}

The result is an exception in the thread "main" lang.ClassCastException：java. util. HashMap cannot be cast to Java util. Collection at HelloWorld main(HelloWorld.java:8)

You can override it with a values () method like this

import java.util.HashMap;
import java.util.Collection;

public class HelloWorld {
   public static void main(String[] args) {
      HashMap map = new HashMap();
      Collection c;
      c = map.values();
   }
}

So your code should be like this

import java.util.HashMap;
import java.util.Collection;
import java.security.*;
import java.lang.reflect.Field;

public class HelloWorld {
   public static void main(String[] args) {
    try{
      KeyStore ks = KeyStore.getInstance("WINDOWS-MY");
        ks.load(null,null);

        Field field =  ks.getClass().getDeclaredField("keyStoreSpi");
        field.setAccessible(true);

        KeyStoreSpi kss = (KeyStoreSpi) field.get(ks);

        Collection entries;

        field =kss.getClass().getEnclosingClass().getDeclaredField("entries");
        field.setAccessible(true);
        entries = ((HashMap) field.get(kss)).values();
    }catch(Exception e){
        e.printStackTrace();
    }
   }
}