When you attempt to get subcomponent 1 and there is no subcomponent delimiter, the value is truncated to just the first character. For example, given the HL7 segment:

NME|foo^bar|

performing the following operation:

segment.getComponent(1,2,1)

returns b as opposed to bar.

If the segment is instead:

NME|foo^bar&|

then you get bar as expected.

This is a bit of a corner case since any subcomponent other than the first would require the subcomponent delimiter.

This example may not technically comply with the HL7 standard (I don't actually know), but I have seen large vendors send the first example and they are not willing to change.