I have the following Java class:

```
import java.util.concurrent;

public class Test{

    public static void main(String[] args){
            ExecutorService ex = Executors.newCachedThreadPool();

            for(int i=0; i<10; i++){
                    ex.execute(new PeerThread(i+1));
            }

    }

```

}

For some reason, .concurrent does not import correctly. Instead, it gives me the error: 

```
import java.util.concurrent;
            ^
symbol:   class concurrent
location: package java.util

```

Of course, it also gives me an error related to the usage of Executor, but that is to be expected if it can't find the concurrent package. 

I downloaded the latest version of the SDK as well as the latest version of regular Java (as I was unsure whether or not this mattered).

java -version reports java 1.7.0\_51.

<http://www.java.com/en/download/installed.jsp> reports Java 7 51 as well.

If it matters, I am running Mac OSX 10.9.1.

I'm sure it is something stupid.

Thanks in advance.