JAVA 实例化类集时红色字体为什么报错

Question

package test;

import java.awt.List;
import java.util.ArrayList;
public class test7 {
public static void main(String[] args) {
List<Book> l1 = new ArrayList<Book>();
}
}

但是我import java.util.List时提示错误是为什么？

Answer 1

package&nbsp;test; import&nbsp;java.util.List; import&nbsp;java.util.ArrayList;public&nbsp;class&nbsp;test7&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;public&nbsp;static&nbsp;void&nbsp;main(String[]&nbsp;args)&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;List<Book>&nbsp;l1&nbsp;=&nbsp;new&nbsp;ArrayList<Book>(); &nbsp;&nbsp;&nbsp;&nbsp;} }这样就好了