Java tutorial
//package com.java2s; /* * Copyright (C) 2012 www.amsoft.cn * * Licensed 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 android.text.TextUtils; public class Main { public static boolean isTop(String str) { boolean flag = false; if (!TextUtils.isEmpty(str) && str.startsWith("#") && str.endsWith("#") && str.length() >= 2) { flag = true; } return flag; } public static boolean isEmpty(String str) { return str == null || str.trim().length() == 0; } }