Created
March 26, 2014 06:47
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Copy stdin to stdout in Java
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import java.io.IOException; | |
/** | |
* Class that copies stdin to stdout, as compained about as not being cleanly | |
* writable in Java on Hacker News. | |
* In real code, you would just write IOUtils.copy(System.in, System.out), | |
* which does basically the same thing. | |
* This does not catch any exceptions as a) this is just an "exercise" and | |
* b) all we could do with them is pretty-print them. So let the runtime | |
* print them for you. | |
* | |
* Usage: javac inout.java && echo -e "foo\nbar" | java InOut | |
*/ | |
class InOut { | |
public static void main(String[] args) throws IOException { | |
byte[] buffer = new byte[8192]; | |
while(true) { | |
int bytesRead = System.in.read(buffer); | |
if (bytesRead == -1) { | |
return; | |
} | |
System.out.write(buffer, 0, bytesRead); | |
} | |
} | |
} |
uhh I dont understand why this isnt a valid solution
import java.util.Scanner;
public class Main
{
public static void main (String[]args)
{
while(true)
{
Scanner sc = new Scanner(System.in);
System.out.println(sc.nextLine());
}
}
}
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