java.util.HashMap.KeySet is not public in java.util.HashMap; cannot be accessed from outside package

Question

Working with maps in a REPL to test out functionality and got this message when trying to run the .isEmpty() function on a map.

Here's what was entered in the console after creating a map:

acronyms.isEmpty();

Any idea what might cause this? I am just trying to troubleshoot my map in a REPL so not an actual program but I'm curious about this error message as I thought that .isEmpty() was built into the functionality of maps.

Thanks!

I took the map I created and ran the .isEmpty() function on it in the console, generating the above error. — Eric Conklin, Jun 03 '15 at 17:51
So it looked like: acronyms.isEmpty(); and generated the error you see on the title. — Eric Conklin, Jun 03 '15 at 17:51

score 0 · Answer 1 · answered Jun 03 '15 at 14:54

0

You get the entrySet() from a map, not Map.KeySet.

answered Jun 03 '15 at 14:54

Marcos Vasconcelos

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java.util.HashMap.KeySet is not public in java.util.HashMap; cannot be accessed from outside package

1 Answers1