package onlyfun.caterpillar;

import java.lang.reflect.Constructor;

import java.lang.reflect.InvocationTargetException;

public class NewInstanceDemo2 {

public static void main(String[] args) {

try {

Class c = Class.forName(args[0]);

// 指定參數型態

Class[] params = new Class[2];

// 第一個參數是String

params[0] = String.class;

// 第二個參數是int

params[1] = Integer.TYPE;

// 取得對應參數列的建構方法

Constructor constructor =

c.getConstructor(params);

// 指定引數內容

Object[] argObjs = new Object[2];

argObjs[0] = "caterpillar";

argObjs[1] = new Integer(90);

// 給定引數並實例化

Object obj = constructor.newInstance(argObjs);

// 呼叫toString()來觀看描述

System.out.println(obj);

} catch (ClassNotFoundException e) {

System.out.println("找不到類別");

} catch (SecurityException e) {

e.printStackTrace();

} catch (NoSuchMethodException e) {

System.out.println("沒有所指定的方法");

} catch (IllegalArgumentException e) {

e.printStackTrace();

} catch (InstantiationException e) {

e.printStackTrace();

} catch (IllegalAccessException e) {

e.printStackTrace();

} catch (InvocationTargetException e) {

e.printStackTrace();

}

}

}