System.err shows up before System.out in terminal?

How come

System.err

System.err

(red error text) show up in the terminal before

System.out

System.out

(white normal text) even though the error comes later in the code?

Its something about the

System.err

System.err

getting "flashed" more quickly or something, whereas the

System.out

System.out

might still be in the "buffer" (not sure what the buffer is, or even if "flashed" is the correct term).