[Reflect] 예제.

	import java.lang.reflect.Constructor;
	import java.lang.reflect.Field;
	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Method;
	import org.apache.commons.logging.Log;
	import org.apache.commons.logging.LogFactory;
	/**
	* @author need4spd, need4spd@cplanet.co.kr, 2010. 2. 11.
	*
	*/
	public class ReflectTest {
	private Log logger = LogFactory.getLog(ReflectTest.class);
	public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, SecurityException, NoSuchMethodException, IllegalArgumentException, InvocationTargetException, NoSuchFieldException {
	//Class class의 객체를 얻는 3가지 방법
	Class clazz = Class.forName("ReflectClass");
	Class clazz2 = ReflectClass.class;
	Class clazz3 = new ReflectClass().getClass();
	//Class class 객체로 부터 해당 클래스의 인스턴스를 얻는 세가지 방법
	Object object = clazz.newInstance();
	Class[] constructorParamClass = new Class[] {String.class};
	Object[] constructorParamObject = new Object[] {"Reflect Test!!!"};
	Constructor constructor = clazz.getConstructor(constructorParamClass);
	Object object2 = constructor.newInstance(constructorParamObject);
	//필드를 가져오는 방법
	Field field = clazz.getField("myField");
	Object fieldObject = field.get(object2);
	//특정 메서드 가져와서 실행
	Method method1 = clazz.getMethod("methodA");
	method1.invoke(object);
	//파라메터가 있는 특정 메서드 실행
	Class[] methodParamClass = new Class[] {String.class};
	Object[] methodParamObject = new Object[] {"1 parameter"};
	Method method2 = clazz.getMethod("methodB", methodParamClass);
	//method2.invoke(null, methodParamObject); //static 일때.
	method2.invoke(object, methodParamObject);
	//리턴값이 있는 메서드 실행
	Method method3 = clazz.getMethod("methodC");
	Object returnObject = method3.invoke(object);
	System.out.println("methodC return value : " + returnObject);
	System.out.println(fieldObject);
	//static
	Method method4 = clazz.getMethod("methodD", new Class[] {String.class});
	method4.invoke(null, new Object[] {"4 parameter"});
	// Method[] methods = clazz.getDeclaredMethods();
	// Method m = methods[2];
	// m.invoke(object, new Object[] {String.class});
	}
	}

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