Äquivalent freopen in Java

Question

vorschlagen Bitte geben Sie eine Methode ein ähnliches Verhalten in Java zu erhalten, wie wenn wir das tun freopen ( "Dateiname", "r", stdin) OR freopen ( "Dateiname", "w", stdout) in C.

Answer 1

Assuming that this is to redirect stdin/stdout/stderr, have a look at System.setIn and friends. They allow you to assign a different InputStream and PrintStream to System.in, System.out and System.err.

Answer 2

See the webpage below. There's a solution to what you wanna do.

http://techtipshoge.blogspot.com/2011/01/connect-standard-io-to-files.html