Here you can find the source of toInt(final String string)
private static String toInt(final String string)
//package com.java2s; /*/*from w ww.j ava 2s .c o m*/ * Copyright 2019 The RoboZonky Project * * 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. */ public class Main { private static String toInt(final String string) { if (string == null) { return "-1"; } return String.valueOf(Integer.parseInt(string)); } }