Java System.out wrap in BufferedWriter
import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.InputStreamReader; import java.io.OutputStreamWriter; public class Main { public static void main(String[] args) throws Exception { BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); String strLine = in.readLine(); BufferedWriter out = new BufferedWriter(new OutputStreamWriter(System.out)); out.write(strLine, 0, strLine.length()); out.flush();/*www.j a v a 2 s . c om*/ in.close(); out.close(); } }