diff --git a/api.debugger.jpda/apichanges.xml b/api.debugger.jpda/apichanges.xml
--- a/api.debugger.jpda/apichanges.xml
+++ b/api.debugger.jpda/apichanges.xml
@@ -895,6 +895,26 @@
         <issue number="246819"/>
     </change>
 
+    <change>
+        <api name="JPDADebuggerAPI"/>
+        <summary>Add methods for retrieval of implemented and extended types.</summary>
+        <version major="3" minor="2"/>
+        <date day="10" month="7" year="2015"/>
+        <author login="mentlicher"/>
+        <compatibility addition="yes" source="compatible" binary="compatible"/>
+        <description>
+            Methods that provide implemented and extended types were added to
+            <code>JPDAClassType</code> class. These are:
+            <ul>
+                <li>getSubClasses()</li>
+                <li>getAllInterfaces()</li>
+                <li>getDirectInterfaces()</li>
+                <li>isInstanceOf()</li>
+            </ul>
+        </description>
+        <class package="org.netbeans.api.debugger.jpda" name="JPDAClassType" />
+        <issue number="253295"/>
+    </change>
 </changes>
 
   <!-- Now the surrounding HTML text and document structure: -->
diff --git a/api.debugger.jpda/manifest.mf b/api.debugger.jpda/manifest.mf
--- a/api.debugger.jpda/manifest.mf
+++ b/api.debugger.jpda/manifest.mf
@@ -1,6 +1,6 @@
 Manifest-Version: 1.0
 OpenIDE-Module: org.netbeans.api.debugger.jpda/2
 OpenIDE-Module-Localizing-Bundle: org/netbeans/api/debugger/jpda/Bundle.properties
-OpenIDE-Module-Specification-Version: 3.1
+OpenIDE-Module-Specification-Version: 3.2
 OpenIDE-Module-Package-Dependencies: com.sun.jdi[VirtualMachineManager]
 
diff --git a/api.debugger.jpda/src/org/netbeans/api/debugger/jpda/JPDAClassType.java b/api.debugger.jpda/src/org/netbeans/api/debugger/jpda/JPDAClassType.java
--- a/api.debugger.jpda/src/org/netbeans/api/debugger/jpda/JPDAClassType.java
+++ b/api.debugger.jpda/src/org/netbeans/api/debugger/jpda/JPDAClassType.java
@@ -89,8 +89,43 @@
      */
     Super getSuperClass();
     
-    /*List<JPDAClassType> getSubClasses();*/
-    
+    /**
+     * Get the currently loaded subclasses, when this type represents a class,
+     * or loaded subinterfaces and implementors of this interface, if this type
+     * represents an interface.
+     * @return a list of direct classes and interfaces, that extend this type.
+     *         Returns an empty array when there are no such types.
+     * @since 3.2
+     */
+    List<JPDAClassType> getSubClasses();
+
+    /**
+     * Get all interfaces that are directly or indirectly implemented by this class,
+     * or extended by this interface.
+     * @return a list of all implemented or extended interfaces.
+     *         Returns an empty array when there are no such interfaces.
+     * @since 3.2
+     */
+    List<JPDAClassType> getAllInterfaces();
+
+    /**
+     * Get the interfaces that are directly implemented by this class,
+     * or directly extended by this interface.
+     * @return a list of all implemented or extended interfaces.
+     *         Returns an empty array when there are no such interfaces.
+     * @since 3.2
+     */
+    List<JPDAClassType> getDirectInterfaces();
+
+    /**
+     * Check if this type in an instance of a given class name.
+     * @param className the class name
+     * @return <code>true</code> when this type is an instance of the given class
+     * name, <code>false</code> otherwise.
+     * @since 3.2
+     */
+    boolean isInstanceOf(String className);
+
     /**
      * Provide a list of static fields declared in this type.
      * @return the list of {@link org.netbeans.api.debugger.jpda.Field} objects