多项选择题
A. The prefix ‘java’ is reserved.
B. The URI ‘myTags’ must be properly mapped to a TLD file by the web container.
C. A translation error occurs because the prefix is considered identical by the web container.
D. For the tag usage
单项选择题 To implement the design intent， which statement must be inserted at line 42？（）
多项选择题 Giventhatascopedattributecartexistsonlyinauser’ssession，whichtwo，takenindependently，ensurethescopedattributecartnolongerexists？（）
单项选择题 Which option prevents the exception thrown by my：errorProne from invoking the error page mechanism and outputs the message "File not found" in the response？（）
