请教高手

Question

为什么在JDK 5.0中这么写没报错：
List<String> allowType = Arrays.asList("image/bmp","image/png","image/gif","image/jpeg","image/jpg");  而在JDK 1.4中写成
List  allowType = Arrays.asList("image/bmp","image/png","image/gif","image/jpeg","image/jpg");  就会报错呢？

Answer 1

改成这样
String[] str={"image/jpg","image/bmp","image/png","image/gif","image/jpeg","image/pjpeg"};
List allowType =Arrays.asList(str);就不报错了

Answer 2

java中asList(T... a)这种可变长参数是从jdk1.5才开始有的。

Answer 3

应该是 jdk1.4 不支持泛型 List<String>