public static void testWrap() { StringBuilder sb = new StringBuilder(); sb.append( "Abc \t3Def ghi asoudg gd ais gdiasgd asgd auysgd asyudga8sdga8sydga 8sdg\fSame column\nbegin\n" + "\t3abc\t5def\nabc"); Justif justif = new Justif(30); justif.wrap(sb); System.err.println(sb); }