Tag: technology

Questions Related to technology

The reset method on an ActionForm
technology web technology

  1. Sets all properties to their initial value

  2. Sets all properties to null

  3. Repopulates all properties from the request parameters

  4. none

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Correct Option: D

Each Struts Action element is uniquely identified by its
technology web technology

  1. Input attribute

  2. Page attribute

  3. Name attribute

  4. Path attribute

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Correct Option: D

Given: 10. public class Bar { 11.static void foo(int...x) { 12. // insert code here 13. } 14. } Which two code fragments, inserted independently at line 12, will allow the class to compile? (Choose two.)
technology programming languages

  1. foreach(x) System.out.println(z);

  2. for(int z : x) System.out.println(z);

  3. while( x.hasNext()) System.out.println( x.next());

  4. for( int i=0; i< x.length; i++ ) System.out.println(x[i]);

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Correct Option: B,D

The name of the Application Resources file is set by the servlet init-param named
technology web technology

  1. application

  2. resources

  3. ApplicationResources

  4. messages

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Correct Option: A

Given: 11. public class Test { 12. public static void main(String [] args) { 13. int x =5; 14. boolean b1 = true; 15. boolean b2 = false; 16. 17.if((x==4) && !b2) 18. System.out.print(”l “); 19. System.out.print(”2 “); 20. if ((b2 = true) && b1) 21. System.out.print(”3 “); 22. } 23. } What is the result?
technology programming languages

  1. 2

  2. 2 3

  3. Compilation fails.

  4. 1 2 3

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Correct Option: B

The validating init-param of the ActionServlet is used to
technology web technology

  1. Bypass calls to the ActionForm validate method

  2. Bypass validation of the Struts configuration file

  3. Generate an error message if an unknown message key is used

  4. none

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Correct Option: B

To specify an ActionMapping to use when a request doesn't match any other mapping, you can
technology web technology

  1. Use an asterisk for the path property

  2. Set the "default" property of the mapping to "true"

  3. Set the "unknown" property of the mapping to "true"

  4. Set the "missing" init-param of the ActionServlet to the mapping's path

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Correct Option: C

Given: 31. // some code here 32. try { 33. // some code here 34. } catch (SomeException se) { 35. // some code here 36. } finally { 37. // some code here 38. } Under which three circumstances will the code on line 37 be executed? (Choose three.)
technology programming languages

  1. The code on line 31 throws an exception

  2. The code on line 33 throws an exception

  3. The code on line 35 throws an exception

  4. The code on line 33 executes successfully

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Correct Option: B,C,D

If you have created a custom ActionMapping subclass with the property "service", you can initialize the value to "selectRecord" using
technology web technology

  4. none

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Correct Option: B

Given: 10. interface Foo {} 11. class Alpha implements Foo { } 12. class Beta extends Alpha {} 13. class Delta extends Beta { 14. public static void main( String[] args) { 15. Beta x = new Beta(); 16. // insert code here 17. } 18. } Which code, inserted at line 16, will cause a java.lang.ClassCastException?
technology programming languages

  1. Alpha a = x;

  2. Foo f= (Alpha)x;

  3. Foo f= (Delta)x;

  4. Beta b = (Beta)(Alpha)x;

Show answer
Correct Option: C