5. String foo = “base”; 6. foo.substring(0,3); 7. foo.concat(“ket”) 8. Type the value of foo at line 8.()
第1题:
1. interface foo { 2. int k = 0; 3. } 4. 5. public class test implements Foo ( 6. public static void main(String args[]) ( 7. int i; 8. Test test = new test (); 9. i= test.k; 10.i= Test.k; 11.i= Foo.k; 12.) 13.) 14. What is the result?()
第2题:
public class Test { public static void main(String args[]) { class Foo { public int i = 3; } Object o = (Object)new Foo(); Foo foo = (Foo)o; System.out.println(“i = “ + foo.i); } } What is the result?()
第3题:
Given the JSP code: <% request.setAttribute("foo", "bar"); %>and the Classic tag handler code: 5. public int doStartTag() throws JspException { 6. // insert code here 7. // return int 8. } Assume there are no other "foo" attributes in the web application. Which invocation on the pageContextobject,inserted at line 6,assigns "bar" to the variable x?()
第4题:
public class test( public static void main(stringargs){ string foo = args [1]; string foo = args ; string foo = args ; } ) And command line invocation: Java Test red green blue What is the result? ()
第5题:
int index = 1; String [] test = new String[3]; String foo = test[index]; What is the result?()
第6题:
第7题:
Foo has the value “”
Foo has the value null
An exception is thrown
The code will not compile
第8题:
An exception is thrown.
The program exists without printing anything.
An error at line 1 causes compilation to fail.
An error at line 6 causes the compilation to fail.
“Running” is printed and the program exits.
第9题:
Baz has the value of “”
Baz has the value of null
Baz has the value of “red”
Baz has the value of “blue”
Bax has the value of “green”
The program throws an exception.
第10题:
Compilation will fail.
Compilation will succeed and the program will print “3”
Compilation will succeed but the program will throw a ClassCastException at line 6.
Compilation will succeed but the program will throw a ClassCastException at line 7.
第11题:
String x = (String) pageContext.getAttribute(foo)
String x = (String) pageContext.getRequestScope(foo)
It is NOT possible to access the pageContext object from within doStartTag
String x = (String) pageContext.getRequest().getAttribute(foo)
String x = (String) pageContext.getAttribute(foo, PageContext.ANY_SCOPE)
第12题:
String x = (String) pageContext.getAttribute(foo)
String x = (String) pageContext.getRequestScope(foo)
It is NOT possible to access the pageContext object from within doStartTag
String x = (String) pageContext.getRequest().getAttribute(foo)
String x = (String) pageContext.getAttribute(foo, PageContext.ANY_SCOPE)
第13题:
1. class SuperFoo { 2. SuperFoo doStuff(int x) { 3. return new SuperFoo(); 4. } 5. } 6. 7. class Foo extends SuperFoo { 8. //insert code here 9. } 下面哪三项分别插入到第8行,可以编译?()
第14题:
2. public class Foo implements Runnable ( 3. public void run (Thread t) { 4. system.out.printIn(“Running.”); 5. } 6. public static void main (String[] args) { 7. new thread (new Foo()).start(); 8. ) 9. ) What is the result?()
第15题:
3. string foo = “ABCDE”; 4. foo.substring(3); 5. foo.concat(“XYZ”); 6. Type the value of foo at line 6.()
第16题:
1.public class Test { 2.public static void main (String args[]) { 3.class Foo { 4.public int i = 3; 5.} 6.Object o = (Object) new Foo(); 7.Foo foo = (Foo)o; 8.System.out.printIn(foo. i); 9. } 10.} What is the result?()
第17题:
第18题:
Baz has the value of “”
Baz has the value of null
Baz has the value of “red”
Baz has the value of “blue”
Bax has the value of “green”
The program throws an exception.
第19题:
i = 3
Compilation fails.
A ClassCastException is thrown at line 6.
A ClassCastException is thrown at line 7.
第20题:
Foo has the value “”
Foo has the value null
An exception is thrown
The code will not compile
第21题:
String value = getServletConfig( ).getParameter(“foo”);
String value = getServletContext( ).getAttribute(“foo”);
Object value = getServletContext( ).getInitParameter(“foo”);
String value = getServletContext( ).getInitParameter(“foo”)
第22题:
The doStartTag method is called once.
The doAfterBody method is NOT called.
The EVAL_PAGE constant is a valid return value for the doEndTag method.
The SKIP_PAGE constant is a valid return value for the doStartTag method.
The EVAL_BODY_BUFFERED constant is a valid return value for the doStartTag method.
第23题:
foofoofoofoofoo
foobarfoobarbar
foobarfoofoofoo
foobarfoobarfoo
barbarbarbarbar
foofoofoobarbar
foofoofoobarfoo