报错原因:未导入java.util.List和java.util.ArrayList包。
如:`
错误:Multiple markers at this line
- ArrayList cannot be resolved to
a type
- List cannot be resolved to a
type
`解决方法:导入java.util.List和java.util.ArrayList包,注意不要将导入包语句放在package Myfirst_package前面,否则会报错:Syntax error on token “package”, import expected。如:
错误导入
正确导入方式: