java Arrays Generic

import java.util.ArrayList;
import java.util.List;
/**
 *泛型數組；
 *泛型數組不能new產生，單能夠是泛型數組引用；如List<String>[] ls;
 */
public class ArraysGeneric {
	public static <T> T[] get (int size) {
		/**
		 * Error: reutrn new T[size];
		 */
		return (T[])new Object[size];
	}
	public static void main(String[] args) {
		List<String>[] ls;
		/**注意下面這兩段代碼的不一樣之處**/
		//List<Object> list = new ArrayList<String>(); //error
		//Object [] objs = new String[3];
		List [] la = new List[10];
		ls = (List<String>[])la;
		ls[0] = new ArrayList<String>();
		Object [] objects = ls;
		objects[1] = new ArrayList<String>();
		List<String> [] ls2 =  new List[2];
		/**能夠強制轉換**/
		List<String> [] ls3 =  (List<String> [])new List[2];
		/**
		 * Error:Integer[] strs=   get(4);
		 */
		 
	}
}