Example usage for org.apache.commons.discovery.tools ClassUtils newInstance

Introduction

In this page you can find the example usage for org.apache.commons.discovery.tools ClassUtils newInstance.

Prototype

public static Object newInstance(Class impl, Class paramClasses[], Object params[]) throws DiscoveryException,
        InstantiationException, IllegalAccessException, NoSuchMethodException, InvocationTargetException 

Source Link

Document

Instantiate a new

Usage

From source file:org.apache.axis.AxisProperties.java

public static Object newInstance(final Class spiClass, final Class constructorParamTypes[],
        final Object constructorParams[]) {
    return AccessController.doPrivileged(new PrivilegedAction() {
        public Object run() {
            ResourceClassIterator services = getResourceClassIterator(spiClass);

            Object obj = null;//  w  w w  .  ja  v  a  2  s .c o  m
            while (obj == null && services.hasNext()) {
                Class service = services.nextResourceClass().loadClass();

                /* service == null
                 * if class resource wasn't loadable
                 */
                if (service != null) {
                    /* OK, class loaded.. attempt to instantiate it.
                     */
                    try {
                        ClassUtils.verifyAncestory(spiClass, service);
                        obj = ClassUtils.newInstance(service, constructorParamTypes, constructorParams);
                    } catch (InvocationTargetException e) {
                        if (e.getTargetException() instanceof java.lang.NoClassDefFoundError) {
                            log.debug(Messages.getMessage("exception00"), e);
                        } else {
                            log.warn(Messages.getMessage("exception00"), e);
                        }
                    } catch (Exception e) {
                        log.warn(Messages.getMessage("exception00"), e);
                    }
                }
            }

            return obj;
        }
    });
}

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