Java Web——显示当前日期和时间的代码

<%

String date;

int y, m, d;

Calendar cal = Calendar.getInstance();

y = cal.get(Calendar.YEAR);

m = cal.get(Calendar.MONTH) + 1;

d = cal.get(Calendar.DATE);

Date date2 = new Date();

cal.setTime(date2);

int w = cal.get(Calendar.DAY_OF_WEEK) - 1;

if (w < 0){

w = 0;

}

String week = "";

if(w == 1){

week = "星期一";

}else if(w == 2){

week = "星期二";

}else if(w == 3){

week = "星期三";

}else if(w == 4){

week = "星期四";

}else if(w == 5){

week = "星期五";

}else if(w == 6){

week = "星期六";

}else if(w == 7){

week = "星期日";

}

date = "" + y + "年" + m + "月" + d + "日 "+week+"";

if(date.contains("1月1日")){

date = "今天是元旦！";

}else if(date.contains("10月1日")){

}

%>

这样显示详细日期 <%=date %>

在删除按钮中添加确认 onclick="return confirm('是否删除？')"

input框中显示当前时间：

<%

java.text.SimpleDateFormat formatter = new java.text.SimpleDateFormat("yyyy-MM-dd");

java.util.Date currentTime = new java.util.Date();//得到当前系统时间

String time = formatter.format(currentTime); //将日期时间格式化

%>

<%=time %>

下拉框的默认选中

<select name="" id="" style="width:105px">

<option value="男" <c:if test='${jdr.sex =="男"}'>selected='selected'</c:if>></option>

<option value="女" <c:if test='${jdr.sex =="女"}'>selected='selected'</c:if>></option>

</select>