Java tutorial
/* * Copyright 2015 zua. * * 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. */ package lifetime.component.validator; import com.vaadin.data.Validator; /** * * @author zua */ class MinSizeValidator implements Validator { public static final int MIN_SIZE = 6; public MinSizeValidator() { } @Override public void validate(Object value) { if (((String) value).length() < MIN_SIZE) { throw new InvalidValueException("Too small"); } } }