18.4.4操作数组

package d18_4_2;

import java.lang.reflect.Array;

/**
 * 常用方法
 * static Object newInstance(Class<?> componentType,int.. length)
 * 创建一个具有指定元素类型，指定维度的新数组
 * 
 * static xxx getXxx(Object array,int index)
 * 返回array数组中第index个元素
 *
 * static void setXxx(Object array,int index,xxx val)
 * 将arr数组中第index个元素的值设为val
 * 
 */
public class ArrayTest {

	public static void main(String[] args) {

		Object arr=Array.newInstance(String.class, 10);
		Array.set(arr,1,"spring");
		Array.set(arr,2,"springMVC");
		Array.set(arr,3,"mybatis");
		
		System.out.println(Array.get(arr,0));
		System.out.println(Array.get(arr,1));
		System.out.println(Array.get(arr,2));
		System.out.println(Array.get(arr,3));
	}
}