I'm creating a Java code and keep getting this error >

TestClass.java:26: error: non-static method isEmpty(LetterInventory) cannot be referenced from a static context

I have code from 2 separate Java files that are conflicting.

For the first file, LetterInventory, it compiles without issue. I have:

 public int size() { return size; } // end size // If Letter Inventory is empty, returns true. // If Letter Inventory is not empty, returns false. public boolean isEmpty(LetterInventory p) { if(size == 0) { return true; } return false;

The 2nd file, TestClass, is the one giving me the error:

 String insert = scan.next(); LetterInventory v = new LetterInventory(insert); if(LetterInventory.isEmpty(v)) {

There are a few more pieces of code surrounding it, but it's mostly println's, so I don't think it has anything to do with it.

Please help! If you could also give an example of what would work in the code, that would be amazin.g