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DateUtil.java
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DateUtil.java
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/**
* Copyright 2010 Mozilla Foundation
*
* 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.
*/
package com.mozilla.util;
import java.util.Calendar;
public class DateUtil {
/**
* Get the first moment in time for the given time and resolution
* @param time
* @param resolution
* @return
*/
public static long getTimeAtResolution(long time, int resolution) {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(time);
switch (resolution) {
case Calendar.DATE:
cal.set(Calendar.HOUR, 0);
case Calendar.HOUR:
cal.set(Calendar.MINUTE, 0);
case Calendar.MINUTE:
cal.set(Calendar.SECOND, 0);
case Calendar.SECOND:
cal.set(Calendar.MILLISECOND, 0);
default:
break;
}
return cal.getTimeInMillis();
}
/**
* Get the last moment in time for the given time and resolution
* @param time
* @param resolution
* @return
*/
public static long getEndTimeAtResolution(long time, int resolution) {
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(time);
switch (resolution) {
case Calendar.DATE:
cal.set(Calendar.HOUR, 23);
case Calendar.HOUR:
cal.set(Calendar.MINUTE, 59);
case Calendar.MINUTE:
cal.set(Calendar.SECOND, 59);
case Calendar.SECOND:
cal.set(Calendar.MILLISECOND, 999);
default:
break;
}
return cal.getTimeInMillis();
}
}