多项选择题
Which the two are characteristics of the Service Locator pattern？（）
A. It encapsulates component lookup procedures
B. It increases source code duplication and decreases reuse
C. It improves client performance by caching context and factory objects
D. It degrades network performance due to increased access to distributed lookup services
相关考题
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单项选择题
Assumethetaghandlerforast：simpletagextendsSimpleTagSupport.Inwhatwaycanscriptletcodebeusedinthebodyofst：simple？（）
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. -
单项选择题
The tag handler for n：recurse extends SimpleTagSupport.Assuming an n：recurse tag can either contain an empty body or another n：recurse tag， which strategy allows the tag handler for n：recurse to output the nesting depth of the deepest n：recurse tag？（）
A. It is impossible to determine the deepest nesting depth because it is impossible for tag handlers that extend SimpleTagSupport to communicate with their parent and child tags
B. Create a private non-static attribute in the tag handler class called count of type int initialized to oIncrement count in the doTag method. If the tag has a body， invoke the fragment for that body. Otherwise， output the value of count
C. Start a counter at 1. Call getChildTags（）. If it returns null， output the value of the counter. Otherwise， increment counter and continue from where getChildTags（） is called. Skip processing of the body.
D. If the tag has a body， invoke the fragment for that body. Otherwise， start a counter at 1. Call getParent（）. If it returns null， output the value of the counter. Otherwise， increment the counter and continue from where getParent（） is called. -
单项选择题
Which code snippet， inserted at line 8， causes the value Company to be output？（）
A. JspWriter w = pageContext.getOut（）；w.print（“Company”）；
B. JspWriter w = pageContext.getWriter（）；w.print（“Company”）；
C. JspWriter w = new JspWriter（pageContext.getOut（））； w.print（“Company”）；
D. JspWriter w = new JspWriter （pageContext.getResponse（））； w.print（“Company”）；
