使用反射例項化內部類方式

	@SuppressWarnings("unchecked")
	private static Object getInstance(Class<?> clz) {
		Object obj = null;
		if (clz.isMemberClass()) {
			Class<?> declaredClass = clz.getDeclaringClass();
			try {
				Constructor<Object> dc = (Constructor<Object>) clz.getDeclaredConstructor(declaredClass);
				dc.setAccessible(true);
				obj = dc.newInstance(declaredClass.newInstance());
			} catch (InstantiationException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			} catch (IllegalArgumentException e) {
				e.printStackTrace();
			} catch (InvocationTargetException e) {
				e.printStackTrace();
			} catch (NoSuchMethodException e) {
				e.printStackTrace();
			} catch (SecurityException e) {
				e.printStackTrace();
			}
		} else {
			try {
				obj = clz.newInstance();
			} catch (InstantiationException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			}
		}
		return obj;
	}