Java tutorial
//package com.java2s; /* This code is part of Freenet. It is distributed under the GNU General * Public License, version 2 (or at your option any later version). See * http://www.gnu.org/ for further details of the GPL. */ import java.io.IOException; import java.io.Writer; public class Main { public final static void writeLine(Writer w, int deep, String line) throws IOException { if (deep >= 0) writeDeep(w, deep); w.write(line); w.write('\n'); } public final static void writeDeep(Writer w, int deep) throws IOException { if (deep == 0) return; for (int i = 0; i < deep; i++) { w.write("\t"); } } }