SCDCD(310-081)章节练习(2019.05.10)

A. response.getWriter（ ）
B. response.getOutputStream（ ）
C. response.getOutputWriter（ ）
D. response.getWriter（ ） .getOutputStream（ ）
E. response.getWriter（Writer.OUTPUT_TEXT（ ）

A. The MyCircle class is full encapsulated.
B. The diameter of a given MyCircle is guaranteed to be twice its radius.
C. Lines 6 and 7 should be in a synchronized block to ensure encapsulation.
D. The radius of a MyCircle object can be set without affecting its diameter.

A. It may iterate over arrays， collections， maps and strings.
B. The body of the tag may contain EL code， but not scripting code.
C. When looping over collections， a loop status object may be used in the tag body.
D. It may iterate over a map， but only the key of the mapping may be used in the tag body.
E. When looping over integers （for example begin1=’1’ end=’10’）， a loop status object may not be used in the tag body.

A. Set the body content type to JSP in the TLD
B. Scriptlet code is NOT legal in the body of st：simple
C. Add scripting-enabled= “true” to the start tag for the st：simple element
D. Add a pass-through Classic tag with a body content type of JSP to the body of st：simple， and      place the scriptlet code in the body of that tag.

A.A
B.B
C.C
D.D

A. The init method on a filter is called the first time a servlet mapped to that filter is invoked
B. A filter defined for a servlet must always forward control to the next resource in the filter chain.
C. Filters associated with a named servlet are applied in the order they appear in the web application deployment descriptor file
D. If the init method on a filter throws an UnavailableException， then the container will make no further attempt to execute it

A. false
B. default
C. _object
D. a-class

A. true true
B. false true
C. false true 0
D. true true Infinity
E. false true Infinity
F. An exception is thrown.
G. Compilation or translation fails

A. bas has the value of “”.
B. baz has the value of null.
C. bas has the value of “red”.
D. baz has he value of “blue”.
E. baz has the value of “green”.
F. the code does not compile.
G. The program throws and exception.

A. The code will not compile.
B. The output is Caught Exception
C. The output is Caught IO Exception
D. The program executes normally without printing a message.