Get Class Type 

The following example shows how to verify whether the given class is an interface, enum or class. Class provides the following APIs,

public boolean isInterface()
 - Returns true if the class object is an interface otherwise false.

public boolean isEnum()
 - Returns true if the class object is an enum type otherwise false.

File Name  :   com/bethecoder/tutorials/reflection/GetClassType.java  Author  :   Sudhakar KV Email  :   [email protected]

package com.bethecoder.tutorials.reflection; import java.io.Serializable; import java.util.Stack; public class GetClassType {   enum ServerStatus {     STARTING,     RUNNING,     DOWN   }      /**    * @param args    */   public static void main(String[] args) {     checkClassOrInterface(String.class);     checkClassOrInterface(Stack.class);          System.out.println();     checkClassOrInterface(Runnable.class);     checkClassOrInterface(Serializable.class);          System.out.println();     checkClassOrInterface(Thread.State.class);     checkClassOrInterface(ServerStatus.class);   }      private static void checkClassOrInterface(Class<?> clazz) {     if (clazz.isInterface()) {       System.out.println(clazz + " is an Interface.");     } else if (clazz.isEnum()) {       System.out.println(clazz + " is an Enum.");     } else {       System.out.println(clazz + " is a Class.");     }    } }

class java.lang.String is a Class.
class java.util.Stack is a Class.

interface java.lang.Runnable is an Interface.
interface java.io.Serializable is an Interface.

class java.lang.Thread$State is an Enum.
class com.bethecoder.tutorials.reflection.GetClassType$ServerStatus is an Enum.