Java SQL Time Format formatToDateStr(long millis)

Description

format To Date Str

License

Apache License

Declaration

public static String formatToDateStr(long millis) 

Method Source Code

//package com.java2s;
/**/*from  www. j  av  a2s .com*/
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.sql.Date;
import java.text.SimpleDateFormat;
import java.util.Map;
import java.util.TimeZone;
import java.util.concurrent.ConcurrentHashMap;

public class Main {
    public static final String DEFAULT_DATE_PATTERN = "yyyy-MM-dd";
    static final private Map<String, ThreadLocal<SimpleDateFormat>> threadLocalMap = new ConcurrentHashMap<String, ThreadLocal<SimpleDateFormat>>();

    public static String formatToDateStr(long millis) {
        return getDateFormat(DEFAULT_DATE_PATTERN).format(new Date(millis));
    }

    public static SimpleDateFormat getDateFormat(String datePattern) {
        ThreadLocal<SimpleDateFormat> formatThreadLocal = threadLocalMap
                .get(datePattern);
        if (formatThreadLocal == null) {
            threadLocalMap
                    .put(datePattern,
                            formatThreadLocal = new ThreadLocal<SimpleDateFormat>());
        }
        SimpleDateFormat format = formatThreadLocal.get();
        if (format == null) {
            format = new SimpleDateFormat(datePattern);
            format.setTimeZone(TimeZone.getTimeZone("GMT"));
            formatThreadLocal.set(format);
        }
        return format;
    }
}

Related

1. formatExceptionForToolsWithLimitedCharacterSet(String exceptionLabel)
2. formatTime(Date date)
3. formatTime(final Time time)
4. formatTime(Time time, String format)
5. formatTimeToFloat(Time inputTime)