Here is the only piece of code Oracle accuses Google of copying, out of slightly under one million lines of code:

  private static void rangeCheck(int arrayLen, int fromIndex, int toIndex {
       if (fromIndex > toIndex)
            throw new IllegalArgumentException("fromIndex(" + fromIndex +
                 ") > toIndex(" + toIndex+")");
       if (fromIndex < 0) 
            throw new ArrayIndexOutOfBoundsException(fromIndex);
       if (toIndex > arrayLen) 
            throw new ArrayIndexOutOfBoundsException(toIndex);
  }

Note that of course "rangeCheck", "arrayLen", "fromIndex" and "toIndex" are part of the function signature, as is "ArrayIndexOutOfBoundsException" and "IllegalArgumentException".