I have a string that returns a bunch of ids seperated by `;`. I am splitting them to get their individual values to pass to another utility to lookup a parent id. I then need to compare the parent ids to each other to make sure all ids are the same value. The string could contain one to many ids. Example:

```
String unitIdList = "3e46907f-c4e8-44d2-8cab-4abb5a191a72;9d242306-1c7c-4c95-afde-e1057af9d67c;2e96838f-f0df-4c82-b5bc-cb81a6bdb792;b21a4b19-6c1a-4e74-aa84-7900f6ffa7a8"

for ( String unitIds : unitIdList.split(";") ) {
    parentId = UnitUtil.getInstance().getParentId(UUID.fromString(unitIds));

     // now I need to compare parentIds. They should all be the same, but if not then do something else. 
}

```

How can I compare each value?