Is multi-thread output from System.out.println interleaved

Question

If multiple threads call System.out.println(String) without synchronization, can the output get interleaved? Or is the write of each line atomic? The API makes no mention of

Answer 1

Just to clarify, say you have two threads, one that prints "ABC" and another that prints "DEF". You will never get output like this: ADBECF, but you could get either

ABC
DEF 

or

DEF
ABC