Here you can find the source of asBoolean(Object obj)
public static Boolean asBoolean(Object obj)
//package com.java2s; /*// www. j a v a 2s. co m * (C) Copyright 2012, IBM Corporation * * 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 asBoolean(Object obj) { return asBoolean(obj, false); } public static Boolean asBoolean(Object obj, boolean defaultValue) { Boolean result = defaultValue; if (obj != null) { if (obj instanceof Boolean) { result = (Boolean) obj; } else if (obj instanceof String) { result = Boolean.valueOf("true".equalsIgnoreCase((String) obj) || //$NON-NLS-1$ "1".equals((String) obj)); //$NON-NLS-1$ } } return result; } }