No tabs in source code. Set your editor to indent with spaces.

Indents are 4 characters wide.

Preference is to have the bracket that opens functions and blocks on same line as function declaration or block test rather than on a new line of its own. For example:

if (true) {
    return true;
}

public void main (String [] args) {
    System.println("Hello world");
}

Here is the eclipse template we use for the file header comment:

/* ${type_name}
 * 
 * $$Id: developer_manual.xml 5022 2007-03-23 16:06:32Z stack-sf $$
 * 
 * Created on ${date}
 *
 * Copyright (C) ${year} Internet Archive.
 * 
 * This file is part of the Heritrix web crawler (crawler.archive.org).
 * 
 * Heritrix is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * any later version.
 * 
 * Heritrix is distributed in the hope that it will be useful, 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser Public License
 * along with Heritrix; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
${package_declaration}