How do methods setIn, setOut and setErr affect the standard input, output and error streams?
A) They output data to the standard input, output and error streams.
B) They provide the only way to access the standard input, output and error streams.
C) They redirect the standard input, output and error streams.
D) They empty the standard input, output and error streams.

Question

Quizplus · Accepted Answer

The methods setIn, setOut and setErr in Java affect the standard input, output and error streams respectively by redirecting them to some other streams. By default, the standard input is linked to the keyboard and the standard output and standard error are linked to the console. However, using these methods, we can redirect them to some other streams like files, sockets or pipes. Therefore, option C is the correct choice. Options A, B and D are not accurate.

How Do Methods SetIn, SetOut and SetErr Affect the Standard