StringUtil.java

package com.farsunset.ichat.common.util;

import java.text.SimpleDateFormat;
import java.util.Date;

public class StringUtil {

	public static boolean isEmpty(Object obj) {
		if (null == obj)
			return true;
		if ("".equals(obj.toString().trim())) {
			return true;
		}
		return false;
	}

	public static boolean isNotEmpty(Object obj) {

		return !isEmpty(obj);
	}

	public static String getSequenceId() {
		String mark = String.valueOf(System.currentTimeMillis());
		return mark;
	}

	public static String getCurrentlyDateTime() {
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
		return dateFormat.format(new Date());
	}

	public static String transformDateTime(long t) {
		Date date = new Date(t);
		SimpleDateFormat dateFormat = new SimpleDateFormat(
				"yyyy-MM-dd HH:mm:ss");
		return dateFormat.format(date);
	}

	public static String getCurrentlyDate() {
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyyMMdd");
		return dateFormat.format(new Date());
	}

}