A generic instantiation method for java that determines the best constructor to use for the provided arguments.

ObjectUtil.java

public final class ObjectUtils {
    private ObjectUtils() {
    }


    /**
     * Instantiate a class for the provided constructor arguments.
     *
     * @param clazz The class to instantiate
     *
     * @param args The arguments for the constructor.
     *             The constructor used will be determined from the arguments provided.
     *
     * @return The new instance.
     */
    public static <T> T init(Class<T> clazz, Object... args) {
        try {

            return (T) Arrays.stream(clazz.getConstructors())
                    .filter(construct -> Objects.equals(args.length, construct.getParameterCount()))
                    .filter(construct -> IntStream.range(0, construct.getParameterTypes().length)
                            .allMatch(val -> construct.getParameterTypes()[val].isAssignableFrom(args[val].getClass())))
                    .findFirst().orElseThrow(() -> new InstantiationException("Could not find compatible constructor."))
                    .newInstance(args);

        } catch (InstantiationException | InvocationTargetException | IllegalAccessException e) {
            throw new RuntimeException("Could not instantiate class for provided arguments.", e);
        }
    }

}