Here you can find the source of getMinId(List
public static String getMinId(List<String> ids)
//package com.java2s; /**/*from w w w. j av a 2s . c o m*/ * 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.util.List; public class Main { public static String getMinId(List<String> ids) { String oozieId = ids.get(0); int minInt = Integer.valueOf(oozieId.split("-")[0]); for (int i = 1; i < ids.size(); i++) { String currentId = ids.get(i); int currInt = Integer.valueOf(currentId.split("-")[0]); if (currInt < minInt) { oozieId = currentId; } } return oozieId; } }