Examples of java.lang.reflect.Constructor.newInstance()

java.lang.reflect.Constructor.newInstance()
Uses the constructor represented by this Constructor object to create and initialize a new instance of the constructor's declaring class, with the specified initialization parameters. Individual parameters are automatically unwrapped to match primitive formal parameters, and both primitive and reference parameters are subject to method invocation conversions as necessary.
If the number of formal parameters required by the underlying constructor is 0, the supplied initargs array may be of length 0 or null.
If the constructor's declaring class is an inner class in a non-static context, the first argument to the constructor needs to be the enclosing instance; see The Java Language Specification, section 15.9.3.
If the required access and argument checks succeed and the instantiation will proceed, the constructor's declaring class is initialized if it has not already been initialized.
If the constructor completes normally, returns the newly created and initialized instance. @param initargs array of objects to be passed as arguments tothe constructor call; values of primitive types are wrapped in a wrapper object of the appropriate type (e.g. a float in a {@link java.lang.Float Float}) @return a new object created by calling the constructorthis object represents @exception IllegalAccessException if this Constructor objectenforces Java language access control and the underlying constructor is inaccessible. @exception IllegalArgumentException if the number of actualand formal parameters differ; if an unwrapping conversion for primitive arguments fails; or if, after possible unwrapping, a parameter value cannot be converted to the corresponding formal parameter type by a method invocation conversion; if this constructor pertains to an enum type. @exception InstantiationException if the class that declares theunderlying constructor represents an abstract class. @exception InvocationTargetException if the underlying constructorthrows an exception. @exception ExceptionInInitializerError if the initialization provokedby this method fails.

      } catch (Throwable thr) {
        throw new RegainException("Analyzer " + analyzerType
                + " does not support stop words", thr);
      }
      try {
        analyzer = (Analyzer) ctor.newInstance(new Object[]{Version.LUCENE_30, stopWordSet});
      } catch (Throwable thr) {
        throw new RegainException("Creating analyzer instance failed", thr);
      }


    } else {

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        } catch (Throwable thr) {
          throw new RegainException("Analyzer " + analyzerType
                  + " is not supported.", thr);
        }


        analyzer = (Analyzer) analyzerWithoutStopWords.newInstance(new Object[]{Version.LUCENE_30});
      } catch (Throwable thr) {
        throw new RegainException("Creating analyzer instance failed", thr);
      }
    }

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                {
                    Constructor constructor;
                    try
                    {
                        constructor = expectedType.getConstructor(new Class[] {originalType});
                        object = constructor.newInstance(new Object[] {object});
                    }
                    catch (final NoSuchMethodException exception)
                    {
                        throw new IntrospectorException("Could not convert '" + object + "' to type '" +
                            expectedType.getName() + "'");

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            getLogger().debug(
                "constructing metafacade from class '" + metafacadeClass + "' mapping object '" + mappingObject +
                "', and context '" + context + "'");
        }
        final Constructor constructor = metafacadeClass.getDeclaredConstructors()[0];
        return (MetafacadeBase)constructor.newInstance(new Object[] {mappingObject, context});
    }


    /**
     * Retrieves the inherited mapping class name for the given <code>mapping</code> by traveling 
     * up the inheritance hiearchy to find the first one that has the mapping class name declared.

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    try
    {
      Class classDefinition = classForName(classname);
      Constructor objectConstructor = classDefinition
          .getConstructor(conArgsClass);
      retObject = objectConstructor.newInstance(conArgs);
    }
    catch (Exception e)
    {
      if ((e.getCause() != null) && (e.getCause() instanceof XException))
      {

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            try {
                // Build the realm
                Class realmClass = Class.forName(realmClassName, true, parentClassLoader);
                Constructor realmConstr = realmClass.getConstructor(
                        new Class[] {Set.class, Map.class });
                this.authenticationRealm = (AuthenticationRealm) realmConstr.newInstance(
                        new Object[] { rolesAllowed, startupArgs });


                // Build the authentication handler
                Class authClass = Class.forName(authClassName);
                Constructor authConstr = authClass

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                // Build the authentication handler
                Class authClass = Class.forName(authClassName);
                Constructor authConstr = authClass
                        .getConstructor(new Class[] { Node.class, List.class,
                                Set.class, AuthenticationRealm.class });
                this.authenticationHandler = (AuthenticationHandler) authConstr
                        .newInstance(new Object[] { loginConfigNode,
                                constraintNodes, rolesAllowed,
                                authenticationRealm });
            } catch (ClassNotFoundException err) {
                Logger.log(Logger.DEBUG, Launcher.RESOURCES,

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            try {
                // Build the realm
                Class jndiMgrClass = Class.forName(jndiMgrClassName, true, parentClassLoader);
                Constructor jndiMgrConstr = jndiMgrClass.getConstructor(new Class[] { 
                        Map.class, List.class, ClassLoader.class });
                this.jndiManager = (JNDIManager) jndiMgrConstr.newInstance(new Object[] { 
                        null, envEntryNodes, this.loader });
                if (this.jndiManager != null)
                    this.jndiManager.setup();
            } catch (ClassNotFoundException err) {
                Logger.log(Logger.DEBUG, Launcher.RESOURCES,

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            try {
                // Build the realm
                Class loggerClass = Class.forName(loggerClassName, true, parentClassLoader);
                Constructor loggerConstr = loggerClass.getConstructor(new Class[] { 
                        WebAppConfiguration.class, Map.class });
                this.accessLogger = (AccessLogger) loggerConstr.newInstance(new Object[] {
                        this, startupArgs});
            } catch (Throwable err) {
                Logger.log(Logger.ERROR, Launcher.RESOURCES,
                        "WebAppConfig.LoggerError", loggerClassName, err);
            }

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        if (!preferredClassLoader.equals("")) {
            try {
                Class preferredCL = Class.forName(preferredClassLoader, true, parentClassLoader);
                Constructor reloadConstr = preferredCL.getConstructor(new Class[] { 
                        URL[].class, ClassLoader.class});
                outputCL = (ClassLoader) reloadConstr.newInstance(new Object[] { 
                        jarURLs, parentClassLoader});
            } catch (Throwable err) {
                if (!stringArg(startupArgs, "preferredClassLoader", "").equals("") || 
                        !preferredClassLoader.equals(WEBAPP_CL_CLASS)) {
                    Logger.log(Logger.ERROR, Launcher.RESOURCES, "WebAppConfig.CLError", err);

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