For the following code:

interface Foo extends AutoCloseable {
}

javac will, when compiling with -Xlint, emit a slightly misleading/confusing warning:

$ javac -Xlint Foo.java
Foo.java:1: warning: [try] auto-closeable resource Foo has a member method close() that could throw InterruptedException
public interface Foo extends AutoCloseable {
       ^
1 warning

Given that Foo doesn't even mention close() explicitly the warning is not as helpful as it could/should be.