Question

I’m looking for the correct syntax for the following:

public class Foobar<K extends SomeJavaAPIClass and implements Cloneable>{

So that I can have Foobars of ‘K’, where K is a generic subclass of SomeJavaAPIClass and where K has it’s own clone() method

I’ve tried <K extends SomeJavaAPIClass, implements Cloneable> with no luck, along with other permutations

Answer 1

Use &:

public class Foobar<K extends SomeJavaAPIClass & Cloneable> {

Note that in generic wildcards, “extends” just means “is a subtype of”, so you use it for either classes or interfaces.