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mqtt/org/eclipse/paho/mqttv5/common/ExceptionHelper.java

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+/*******************************************************************************
+ * Copyright (c) 2016 IBM Corp.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution. 
+ *
+ * The Eclipse Public License is available at 
+ *    https://www.eclipse.org/legal/epl-2.0
+ * and the Eclipse Distribution License is available at 
+ *   https://www.eclipse.org/org/documents/edl-v10.php
+ *
+ * Contributors:
+ * 	  Dave Locke - Original MQTTv3 implementation
+ *    James Sutton - Initial MQTTv5 implementation
+ */
+package org.eclipse.paho.mqttv5.common;
+
+/**
+ * Utility class to help create exceptions of the correct type.
+ */
+public class ExceptionHelper {
+	public static MqttException createMqttException(int reasonCode) {
+		
+		return new MqttException(reasonCode);
+	}
+
+	public static MqttException createMqttException(Throwable cause) {
+
+		return new MqttException(cause);
+	}
+	
+	/**
+	 * Returns whether or not the specified class is available to the current
+	 * class loader.  This is used to protect the code against using Java SE
+	 * APIs on Java ME.
+	 * @param className The ClassName
+	 * @return if the class is available
+	 */
+	public static boolean isClassAvailable(String className) {
+		boolean result = false;
+		try {
+			Class.forName(className);
+			result = true;
+		}
+		catch (ClassNotFoundException ex) {
+		}
+		return result;
+	}
+
+	// Utility classes should not have a public or default constructor.
+	private ExceptionHelper() {
+	}
+}