求这几道题的答案，再次谢谢大家了！！！很着急，谢谢了！！！！！！！！！！！！！！
Question 1
Which design pattern is used to decouple presentation from core data access functionality?
❍ A. Business Delegate
❍ B. Data Access Object
❍ C. Model-View-Controller
❍ D. Value Object
Question 2
Which design pattern is used to minimize coupling between presentation-tier clients and the application service API?
❍ A. Business Delegate
❍ B. Data Access Object
❍ C. Model-View-Controller
❍ D. Value Object
Question 2)
What will happen if you try to compile and run the following code
public class MyClass {
public static void main(String arguments[]) {
amethod(arguments);
}
public void amethod(String[] arguments) {
System.out.println(arguments);
System.out.println(arguments[1]);
}
}
1) error Can 't make static reference to void amethod.
2) error method main not correct
3) error array must include parameter
4) amethod must be declared with String
Question 5
Read the following code snippet.
<taglib>
<taglib-uri>
http://www.yourcompany.com/yourTagLibrary
</taglib-uri>
<taglib-location>
/WEB-INF/yourTagLibrary.tld
</taglib-location>
</taglib>
What statement applies to this code snippet?
❍ A. The tablib element of the deployment descriptor is required if you use a taglib directive in a JSP page that references a TLD by name (indirectly) rather than by location (directly).
❍ B. This tag goes into the WEB-INF/myApplication/web.xml file.
❍ C. This definition is incorrect because the taglib-uri should have been uri.
❍ D. This definition is incorrect because the taglib should have been tag.
Question 7
How do you declare initialization parameters for the servlet in the deployment
descriptor?
❍ A.
<web-app>
<servlet>
<servletname> servletName </servletname>
<servletclass> com.myCo.MyServlet </servletclass>
<initparam>
<paramname> color </paramname>
<paramvalue> blue </paramvalue>
</initparam>
</servlet>
</web-app>
❍ B.
<web-app>
<servlet>
<servlet-name> servletName </servlet-name>
<servlet-class> com.myCo.MyServlet </servlet-class>
<init-param>
<name> color </name>
<value> blue </value>
</init-param>
</servlet>
</web-app>
❍ C.
<web-app>
<servlet>
<name> servletName </name>
<class> com.myCo.MyServlet </class>
<init-param>
<param-name> color </param-name>
<param-value> blue </param-value>
</init-param>
</servlet>
</web-app>
❍ D.
<web-app>
<servlet>
<servlet-name> servletName </servlet-name>
<servlet-class> com.myCo.MyServlet </servlet-class>
<init-param>
<param-name> color </param-name>
<param-value> blue </param-value>
</init-param>
</servlet>
</web-app>
Question 29
Which two statements are true regarding a distributable? (Choose two.)
❑ A. A given ServletContext instance may exist on different JVMs.
❑ B. Servlet context-init parameters are not likely to be shared across different
JVMs.
❑ C. A different ServletContext instance may exist on different JVMs.
❑ D. Servlet context-init parameters are likely to be shared across different
JVMs.
Question 11)
What will be the result of attempting to compile and run the following code?
abstract class MineBase {
abstract void amethod();
static int i;
}
public class Mine extends MineBase {
public static void main(String argv[]){
int[] ar=new int[5];
for(i=0;i < ar.length;i++)
System.out.println(ar[i]);
}
}
1) a sequence of 5 0 's will be printed
2) Error: ar is used before it is initialized
3) Error Mine must be declared abstract
4) IndexOutOfBoundes Error
Question 15)
What will be output if you try to compile and run the following code, but there is
no file called Hello.txt in the current directory?.
import java.io.*;
public class Mine {
public static void main(String argv[]){
Mine m=new Mine();
System.out.println(m.amethod());
}
public int amethod() {
try {
FileInputStream dis=new FileInputStream( "Hello.txt ");
}catch (FileNotFoundException fne) {
System.out.println( "No such file found ");
return -1;
}catch(IOException ioe) {
} finally{
System.out.println( "Doing finally ");
}
return 0;
}
}
1) No such file found
2 No such file found ,-1
3) No such file found, Doing finally, -1
4) 0
Question 16)
Which of the following statements are true?
1) Methods cannot be overriden to be more private
2) Static methods cannot be overloaded
3) Private methods cannot be overloaded
4) An overloaded method cannot throw exceptions not checked in the base class
Question 17)
What will happen if you attempt to compile and run the following code?
1) Compile and run without error
2) Compile time Exception
3) Runtime Exception
class Base {}
class Sub extends Base {}
class Sub2 extends Base {}
public class CEx{
public static void main(String argv[]){
Base b=new Base();
Sub s=(Sub) b;
}
}
Question 43)
What will be the result when you try to compile and run the following code?
private class Base{
Base(){
int i = 100;
System.out.println(i);
}
}
public class Pri extends Base{
static int i = 200;
public static void main(String argv[]){
Pri p = new Pri();
System.out.println(i);
}
}
1) Error at compile time
2) 200
3) 100 followed by 200
4) 100
Question 58)
You have these files in the same directory. What will happen when you attempt to compile and run Class1.java if you have not already compiled Base.java
//Base.java
package Base;
class Base{
protected void amethod(){
System.out.println( "amethod ");
}//End of amethod
}//End of class base
package Class1;
//Class1.java
public class Class1 extends Base{
public static void main(String argv[]){
Base b = new Base();
b.amethod();
}//End of main
}//End of Class1
1) Compile Error: Methods in Base not found
2) Compile Error: Unable to access protected method in base class
3) Compilation followed by the output "amethod "
4)Compile error: Superclass Class1.Base of class Class1.Class1 not found
[解决办法]
Question 15)
3) No such file found, Doing finally, -1
Question 16)
Private methods cannot be overloaded
Question 17)
Compile and run without error
Question 43)
1) Error at compile time
Question 58)
Compilation followed by the output "amethod "
[解决办法]
Question 2): 1)
Question 7 : D
Question 11): 3)
Question 15): 3)
Question 16): 4)
Question 17): 3)
Question 43): 1)
Question 58): 4)
[解决办法]
question 1): B
question 2): c MVC
question 2): error Can 't make static reference to void amethod.
[解决办法]
Question 1: C
Question 2: C
Question 3: 1
Question 5: D
Question 7: D
Question 29: BC
Question 11: 3
Question 15: 3
Question 16: 3
Question 17: 1
Question 43: 1
Question 58: 3
[解决办法]
翻译过来看嘛！
[解决办法]
Question 1: 3
Question 2: 4
Question 3: 1
Question 5: 4
Question 7: 4
Question 29: 3
Question 11: 3
Question 15: 3
Question 16: 3
Question 17: 1
Question 43: 1
Question 58: 3
[解决办法]
这贴应该封!!!!!!!!!!!!!!!!!!!!!!
