Plurk paste

import java.lang.reflect.*;

public class ReflectEX1 {
	public static void main(String[] args) {
		try {
			Class c = Class.forName("Mouse");
			
			Constructor cstr = c.getConstructor(int.class);
			
			Object obj = cstr.newInstance(10);
			
			Method mtd = c.getMethon("show", int.class);
			
			Object robj = mtd.invoke(obj, 2);
			System.out.println(robj);
			
			Field fd = c.getField("age");
			System.out.println(fd.getInt(obj));
		}
		catch (NoSuchMethodException e) {
			System.out.println("找不到此名稱的方法");
		}
		catch (NullPointerException e) {
			System.out.println("名稱為 null");
		}
		catch (SecurityException e) {
			System.out.println("有安全問題");
		}
		catch (ClassNotFoundException e) {
			System.out.println("找不到指定的類別");
		}
		catch (IllegalAccessException e) {
			System.out.println("無法存取");
		}
		catch (InstantiationException e) {
			System.out.println("無法產生實體");
		}
		catch (InvocationTargetException e) {
			System.out.println("呼叫發生錯誤");
		}
		catch (NoSuchfieldException e) {
			System.out.println("無法取得屬性");
		}
	}
}