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  • Date、String、Calendar类型之间的转化

    原文出处:http://fjfj910.iteye.com/blog/1202219

    1.Calendar 转化 String
     //获取当前时间的具体情况,如年,月,日,week,date,分,秒等
            Calendar calendat = Calendar.getInstance();

    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    String dateStr = sdf.format(calendar.getTime());


    2.String 转化Calendar

    String str="2010-5-27";
    SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");

    Date date =sdf.parse(str);

    Calendar calendar = Calendar.getInstance();

    calendar.setTime(date);

    3.Date 转化String

    SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");

    String dateStr=sdf.format(new Date());

    4.String 转化Date
    String str="2010-5-27";

    SimpleDateFormat sdf= new SimpleDateFormat("yyyy-MM-dd");

    Date birthday = sdf.parse(str);

    5.Date 转化Calendar

    Calendar calendar = Calendar.getInstance();
    calendar.setTime(new java.util.Date());

    6.Calendar转化Date

    Calendar calendar = Calendar.getInstance();
    java.util.Date date =calendar.getTime();

    下面有个例子,插入oralce表类型为DATE的数据

    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd HHmmss");
        String date = sdf.format(new Date()); 

        -----------------------------------------

         String sql = "Insert into SM_SEND (*****************) " +
                      "values (*******************************

                       "',1," + "to_date('" +date+ "','YYYY-MM-DD HH24:MI:SS')" +
                       "," + "to_date('" +date+ "','YYYY-MM-DD HH24:MI:SS')" +
                       ",0,null,null,null,null,null,null,null)";



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  • 原文地址:https://www.cnblogs.com/VinceYang1994/p/4340186.html
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