Java tutorial
/* * 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. * */ package org.apache.openaz.xacml.admin.view.validators; import com.vaadin.data.Validator; public class BooleanValidator implements Validator { private static final long serialVersionUID = 1L; public BooleanValidator() { } @Override public void validate(Object value) throws InvalidValueException { if (value instanceof Boolean) { return; } if (value.toString().equalsIgnoreCase("true") || value.toString().equalsIgnoreCase("false") || value.toString().equalsIgnoreCase("0") || value.toString().equalsIgnoreCase("1")) { return; } throw new InvalidValueException("Unrecognized boolean"); } }