Java tutorial
/* * Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javafx.beans.property; import javafx.beans.binding.ObjectExpression; import javafx.collections.ObservableList; import javafx.collections.ObservableMap; import javafx.collections.ObservableSet; /** * Superclass for all readonly properties wrapping an arbitrary {@code Object}. * * For specialized implementations for {@link ObservableList}, {@link ObservableSet} and * {@link ObservableMap} that also report changes inside the collections, see * {@link ReadOnlyListProperty}, {@link ReadOnlySetProperty} and {@link ReadOnlyMapProperty}, respectively. * * @see javafx.beans.value.ObservableObjectValue * @see javafx.beans.binding.ObjectExpression * @see ReadOnlyProperty * * * @param <T> * the type of the wrapped {@code Object} * @since JavaFX 2.0 */ public abstract class ReadOnlyObjectProperty<T> extends ObjectExpression<T> implements ReadOnlyProperty<T> { /** * The constructor of {@code ReadOnlyObjectProperty}. */ public ReadOnlyObjectProperty() { } /** * Returns a string representation of this {@code ReadOnlyObjectProperty} object. * @return a string representation of this {@code ReadOnlyObjectProperty} object. */ @Override public String toString() { final Object bean = getBean(); final String name = getName(); final StringBuilder result = new StringBuilder("ReadOnlyObjectProperty ["); if (bean != null) { result.append("bean: ").append(bean).append(", "); } if ((name != null) && !name.equals("")) { result.append("name: ").append(name).append(", "); } result.append("value: ").append(get()).append("]"); return result.toString(); } }