Java Parse Date parseDate(String str, DateFormat df)

Description

Parses a presumptive date or date/time, using a supplied format pattern.

License

Apache License

Parameter

Parameter	Description
str	a String, possibly a date or date/time String.
df	A date formatter.

Return

A date value, resulting from parsing the String using the supplied formatter. Returns null if the parsing attempt fails.

Declaration

public static Date parseDate(String str, DateFormat df)

Method Source Code


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

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

import java.util.Date;

public class Main {
    /**/*from ww  w.  ja  v a2  s .com*/
     * Parses a presumptive date or date/time, using a supplied format pattern.
     *
     * @param str      a String, possibly a date or date/time String.
     * @param pattern  A date or date/time pattern.
     *
     * @return         A date value, resulting from parsing the String using the
     *                 supplied pattern.  Returns null if the parsing attempt fails.
     */
    public static Date parseDate(String str, String pattern) {
        if (pattern == null || pattern.trim().isEmpty()) {
            return null;
        }
        if (str == null || str.trim().isEmpty()) {
            return null;
        }
        DateFormat df = null;
        Date date = null;
        try {
            df = new SimpleDateFormat(pattern);
            date = parseDate(str, df);
        } catch (IllegalArgumentException iae) {
            return null;
        }
        return date;
    }

    /**
     * Parses a presumptive date or date/time, using a supplied format pattern.
     *
     * @param str      a String, possibly a date or date/time String.
     * @param df       A date formatter.
     *
     * @return         A date value, resulting from parsing the String using the
     *                 supplied formatter.  Returns null if the parsing attempt fails.
     */
    public static Date parseDate(String str, DateFormat df) {
        if (df == null) {
            return null;
        }
        if (str == null || str.trim().isEmpty()) {
            return null;
        }
        Date date = null;
        try {
            df.setLenient(false);
            date = df.parse(str);
        } catch (ParseException pe) {
            return null;
        }
        return date;
    }
}