SimpleDateFormat、Calendar、Date

// SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss E");
SimpleDateFormat format = new SimpleDateFormat("MM-dd HH:mm");

Date date = new Date(System.currentTimeMillis());

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Calendar和Date()的转化(1) Calendar转化为Date()Calendar cal=Calendar.getInstance();Date() date=cal.getTime();(2) Date转化为CalendarDate date=new Date();Calendar cal=Calendar.getInstance();cal.setTime(date);

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JAVA的Date类与Calendar类【转】：http://www.cnblogs.com/springcsc/archive/2009/12/03/1616347.html

Java字符串转换为日期和时间比较大小：http://www.cnblogs.com/chinafine/archive/2010/12/07/1899151.html