반사 사용 시 이상 발생 NoSuchMethodException 해결

public class Person {
	public String name;
	protected int age;
	char sex;
	private String address;

	public Person() {
		System.out.println("       ");
	}

	private Person(String name, int age, char sex, String address) {
		System.out.println("         ");
		this.name = name;
		this.age = age;
		this.sex = sex;
		this.address = address;
	}

	public void show(Object obj) {
		System.out.println(obj);
	}

	@Override
	public String toString() {
		return "Person [name=" + name + ", age=" + age + ", sex=" + sex + ", address=" + address + "]";
	}
}

import java.lang.reflect.Method;

public class ReflectMethod {
	public static void main(String[] args) throws Exception {
		Class clazz = Class.forName("test.Person");
		Method[] methods = clazz.getMethods();
		
		methods = clazz.getDeclaredMethods();
		for (Method m : methods) {
			System.out.println(m);
		}
		System.out.println("----------------------");
		Person p = (Person) clazz.newInstance();
		
		Method method = clazz.getMethod("show");
		System.out.println(method);
	}
}

Exception in thread "main" `java.lang.NoSuchMethodException`: test.Person.show()
	at java.lang.Class.getMethod(Unknown Source)
	at test.ReflectMethod.main(ReflectMethod.java:15)

Method method = clazz.getMethod("show",Object.class);

public void xxx.xxx.Person.show(java.lang.Object)