Java Hour Format formatDate(Date date, String format)

Description

format Date

License

Apache License

Declaration

public static String formatDate(Date date, String format) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Date;

public class Main {

    public static String formatDate(String dateStr, String inputFormat, String format) {
        String resultStr = dateStr;
        try {//from   w  w w .  j  av  a  2  s .c  o  m
            Date date = new SimpleDateFormat(inputFormat).parse(dateStr);
            resultStr = formatDate(date, format);
        } catch (ParseException e) {
        }
        return resultStr;
    }

    public static String formatDate(String dateStr, String format) {
        String resultStr = dateStr;
        String inputFormat = "yyyy-MM-dd HH:mm:ss";
        if (dateStr == null) {
            return "";
        }
        if (dateStr.matches("\\d{1,4}\\-\\d{1,2}\\-\\d{1,2}\\s+\\d{1,2}:\\d{1,2}:\\d{1,2}\\.\\d{1,3}")) {
            inputFormat = "yyyy-MM-dd HH:mm:ss.SSS";
        } else if (dateStr.matches("\\d{4}\\-\\d{1,2}\\-\\d{1,2} +\\d{1,2}:\\d{1,2}")) {
            inputFormat = "yyyy-MM-dd HH:mm:ss";
        } else if (dateStr.matches("\\d{4}\\-\\d{1,2}\\-\\d{1,2} +\\d{1,2}:\\d{1,2}")) {
            inputFormat = "yyyy-MM-dd HH:mm";
        } else if (dateStr.matches("\\d{4}\\-\\d{1,2}\\-\\d{1,2} +\\d{1,2}")) {
            inputFormat = "yyyy-MM-dd HH";
        } else if (dateStr.matches("\\d{4}\\-\\d{1,2}\\-\\d{1,2} +\\d{1,2}")) {
            inputFormat = "yyyy-MM-dd";
        } else if (dateStr.matches("\\d{1,4}/\\d{1,2}/\\d{1,2}\\s+\\d{1,2}:\\d{1,2}:\\d{1,2}\\.\\d{1,3}")) {
            inputFormat = "yyyy/MM/dd HH:mm:ss.SSS";
        } else if (dateStr.matches("\\d{4}/\\d{1,2}/\\d{1,2} +\\d{1,2}:\\d{1,2}")) {
            inputFormat = "yyyy/MM/dd HH:mm:ss";
        } else if (dateStr.matches("\\d{4}/\\d{1,2}/\\d{1,2} +\\d{1,2}:\\d{1,2}")) {
            inputFormat = "yyyy/MM/dd HH:mm";
        } else if (dateStr.matches("\\d{4}/\\d{1,2}/\\d{1,2} +\\d{1,2}")) {
            inputFormat = "yyyy/MM/dd HH";
        } else if (dateStr.matches("\\d{4}/\\d{1,2}/\\d{1,2} +\\d{1,2}")) {
            inputFormat = "yyyy/MM/dd";
        }
        resultStr = formatDate(dateStr, inputFormat, format);
        return resultStr;
    }

    public static String formatDate(Date date, String format) {
        SimpleDateFormat sdf = new SimpleDateFormat(format);
        return sdf.format(date);
    }
}

Related

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2. formatDate(Date date, String dateFormat)
3. formatDate(Date date, String expression)
4. formatDate(Date date, String format)
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6. formatDate(Date date, String format)
7. formatDate(Date date, String format)
8. formatDate(Date date, String format, Locale locale)
9. formatDate(Date date, String patter)