Java日期格式化方法

package com.zlp.user;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class PrintCurrentTime {

/**
* 将日期按指定格式转换成字符串
* @param date
* @param style
* @return
*/
private String dateToString(Date date, String style) {
SimpleDateFormat sdf = new SimpleDateFormat(style);
if (date != null) {
return sdf.format(date);
}
return null;
}

public static void main(String[] args) {
System.out.println("**********1**********");
String DATE_STYLE_BASIC = "yyyy-MM-dd HH:mm:ss";
System.out.println(new PrintCurrentTime().dateToString(new Date(),DATE_STYLE_BASIC));

System.out.println("**********2**********");
Calendar cal = Calendar.getInstance();
DateFormat df = DateFormat.getDateTimeInstance(DateFormat.SHORT,DateFormat.SHORT);
System.out.println(df.format(cal.getTime()));

System.out.println("******3*********");
Calendar c = Calendar.getInstance();
System.out.print(c.get(Calendar.YEAR) + "年"
+ (c.get(Calendar.MONTH) + 1) + "月" + c.get(Calendar.DATE)
+ "日");
System.out.println(c.get(Calendar.HOUR_OF_DAY) + ":"
+ c.get(Calendar.MINUTE) + ":" + c.get(Calendar.SECOND));
}
}

java.util.Date utilDate = new java.util.Date();
java.sql.Date sqlDate = new java.sql.Date(utilDate.getTime());