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int index = 1； String [] test = new String[3]； String foo = test[index]； What is the result？（）
- A、 Foo has the value “”
- B、 Foo has the value null
- C、 An exception is thrown
- D、 The code will not compile
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String value = getServletConfig（ ）.getParameter（“foo”）；B
String value = getServletContext（ ）.getAttribute（“foo”）；C
Object value = getServletContext（ ）.getInitParameter（“foo”）；D
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