package Str;                import java.util.Calendar;        /**        *         *         * @project Tool        * @type Test8        * @Description         * @author xuyw        * @email xyw10000@163.com        * @date 2014-8-9 下午01:45:02        * @version 1.0        *        */        public class Test8 {                    /**            * @param args            */            public static void main(String[] args) {                Calendar calendar = Calendar.getInstance();                calendar.add(Calendar.MONTH, 0);                calendar.set(Calendar.DAY_OF_MONTH, 1);// 设置为1号,当前日期既为本月第一天                int firstDay = calendar.get(Calendar.DAY_OF_WEEK) - 1;                int monthDays = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);// 当月最后一天                        StringBuilder sbd = new StringBuilder();                sbd.append("<table cellspacing='0' style='background: url(./img/body.png);'>");                sbd.append("<thead><tr>");                sbd                        .append("<th>星期天</th><th>星期一</th><th>星期二</th><th>星期三</th><th>星期四</th><th>星期五</th><th>星期六</th>");                sbd.append("</tr></thead>");                sbd.append("<tbody><tr>");                // 第一行                int weekend = 0;// 每周的最后一天的日期                for (int i = 0; i < 7; i++) {                    if (i < firstDay) {                        sbd.append("<td></td>");                    } else {                        sbd.append("<td>" + (i - firstDay + 1) + "</td>");                    }                    weekend = i - firstDay + 1;                }                sbd.append("</tr>");                while (weekend < monthDays) {                    sbd.append("<tr>");                            for (int i = 0; i < 7; i++) {                        if (weekend + i < monthDays)// 数字小于等于当前月的最后一天                        {                            sbd.append("<td>" + (i + weekend + 1) + "</td>");                        } else {                            sbd.append("<td></td>");                        }                            }                    sbd.append("</tr>");                    weekend += 7;// 周末再加7天                }                        sbd.append("<tbody></table>");                System.out.println(sbd.toString());            }        }  

先前测试就用控制台生成html标签   将生成的html标签在页面展示即可 效果图如下
css

    * {            /* old-style reset here :) */            border: 0px;            padding: 0px;        }        body {            font-family: Helvetica;            background: white;            text-align: center;            /* background: url(../img/body.png) repeat-x; */}        body h1 {            padding-top: 20px;            font-size: 36px;            color: #335;        }        p{font-size:26px;}        table {            border-collapse: separate;            border: 1px solid #9DABCE;            border-width: 1px 1px 1px 1px;            margin: 10px auto;            font-size: 30px;        }                        td, th {            width: 81px;            height: 81px;            text-align: center;            vertical-align: middle;            /*background: url(../img/cells.png);*/            color: #444;            position: relative;        }        th {            height: 30px;            font-weight: bold;            font-size: 14px;        }                td.sign_in {            background-position: 81px 0px;            color: red;        }                td.sign_no{            background: url(../img/cells.png);        }