Time格式转换

1.将"Thu Apr 30 01:33:41 +0000 2009"转换为"yyyy年MM月dd日 HH时mm分ss秒"

    public static String getDisplayDateStr(String dateStr){
        Date dd = new Date(dateStr);
        SimpleDateFormat myFmt=new SimpleDateFormat("yyyy年MM月dd日 HH时mm分ss秒"); 
        String str = "";
        try{
            str = myFmt.format(dd);            
        }catch(Exception e){
            e.printStackTrace();
        }
        dout(str);
        return str;
    }
    

2.输入"Thu Apr 30 01:33:41 +0000 2009" 返回Date

    public static Date str2Date(String dateStr){
        return new Date(dateStr);
    }

3.传入一个Date，判断是多久前，返回示例"4小时前"

public static String getHowLongStr(Date date){
        String rs = "";
        Long i = date.getTime();
        Date now = new Date();
        Long j = now.getTime();
        dout(j - i);
        long day = 1000 * 60 * 60 * 24;
        long hour = 1000 * 60 * 60;
        long min = 1000 * 60;
        long sec = 1000;
        if (((j-i)/day)>0)
            rs = ((j-i)/day)+"天前";
        else if (((j-i)/hour)>0)
            rs = ((j-i)/hour)+"小时前";
        else if (((j-i)/min)>0)
            rs = ((j-i)/min)+"分钟前";
        else if (((j-i)/sec)>0)
            rs = ((j-i)/sec)+"秒前";
        return rs;
    }

4.number型的直接换换成时间Date类型

long myDate = 1270202674000L; 
SimpleDateFormat fm1 = new SimpleDateFormat("MM"+"月"+"dd"+"日"); 
String date = fm1.format(myDate); 

5.字符串转换时间

String unixDate = "1259200976"; 
SimpleDateFormat fm1 = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss"); 
SimpleDateFormat fm2 = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); 
long unixLong = 0; 
String date = ""; 
unixLong = Long.parseLong(unixDate) * 1000; 
date = fm1.format(unixLong); 
date = fm2.format(new Date(date)); 

部分引用http://www.cnblogs.com/tt_mc/archive/2010/08/25/1808326.html#2051365