Java Utililty Methods Reflection Constructor Invoke

List of utility methods to do Reflection Constructor Invoke

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Description

The list of methods to do Reflection Constructor Invoke are organized into topic(s).

Method

ObjectinvokePrivateConstructor(Class clazz)
Utility method for Unit tests to invoke private constructors 
Constructor<?> constructor = null;
try {
    constructor = clazz.getDeclaredConstructor();
} catch (NoSuchMethodException e) {
    System.err.println("Constructor for [" + clazz.getName() + "] does not exist");
constructor.setAccessible(true);
Object instance = null;
...
voidinvokePrivateConstructor(Class classType)
invoke Private Constructor 
Constructor<E> constructor = classType.getDeclaredConstructor();
constructor.setAccessible(true);
constructor.newInstance();
voidinvokePrivateConstructor(Class clazz)
invoke Private Constructor 
final Constructor<T> constructor = clazz.getDeclaredConstructor();
constructor.setAccessible(true);
constructor.newInstance();
ObjectinvokeReflectConstruct(String className, Object[] parameter, Class[] args)
invoke Reflect Construct 
try {
    Class clazz = Class.forName(className);
    Constructor constructor = clazz.getDeclaredConstructor(args);
    constructor.setAccessible(true);
    return constructor.newInstance(parameter);
} catch (Exception e) {
    e.printStackTrace();
if (isThrowable) {
    throw new RuntimeException("invokeReflectConstruct error " + className + "   parameter   " + parameter);
return null;