How to check if an object implements an interface

Question

How to check if some class implements interface   When having    Character Gorgon gor   new Character Gorgon      how to check if gor implements Monster interface   public interface Monster        public int getLevel         public int level   1     public class Character       public static class Gorgon extends Character implements Monster           public int level           Override         public int getLevel     return level             public Gorgon                 type    Gorgon                         Is the method getLevel   overridden in Gorgon correctly  so it can return level of new gor created

User · Answer

Use  if  gor instanceof Monster

User · Answer

In general for AnInterface and anInstance of any class   AnInterface class isAssignableFrom anInstance getClass

User · Answer

If you want a method like public void doSomething  Object implements Serializable   you can just type it like this public void doSomething Serializable serializableObject   You can now pass it any object that implements Serializable but using the serializableObject you only have access to the methods implemented in the object from the Serializable interface

User · Answer

For an instance  Character Gorgon gor   new Character Gorgon      Then do  gor instanceof Monster   For a Class instance do  Class lt   gt  clazz   Character Gorgon class  Monster class isAssignableFrom clazz

[java] How to check if an object implements an interface?

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