Here you can find the source of toBoolean(final String value, final boolean def)
public static boolean toBoolean(final String value, final boolean def)
//package com.java2s; /**/*from w w w .jav a 2 s . co m*/ * Copyright (C) 2015 John Casey (jdcasey@commonjava.org) * * 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 { public static boolean toBoolean(final String value, final boolean def) { if (isEmpty(value)) { return def; } return Boolean.parseBoolean(value); } private static boolean isEmpty(String val) { return val == null || val.length() < 1; } }