Tag: programming languages

Questions Related to programming languages

What would be the output of the following program? main() { unsigned char i = 0x80; printf("\n%d", i<<1); }

technology programming languages

  1. 0

  2. 256

  3. 100

  4. None of the above

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Correct Option: B

What formula should be used to get a date, 2 months from todays date?
technology programming languages

  1. @Text

  2. @Adjust

  3. @Date

  4. @Month

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Correct Option: B

What class need to be used to validate values entered in a form before saving?
technology programming languages

  1. UIDOC

  2. DOC

  3. Notes

  4. Notesvalue

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Correct Option: A

If you would like to restrict access to a particular document where will you store the persons name to give access

technology programming languages

  1. Managers Field

  2. Editors Field

  3. Authors Field

  4. Readers Field

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Correct Option: C

If I would need to attach document ina field what type of field has to be created?
technology programming languages

  1. Text

  2. Attach Text

  3. Text Lite

  4. Rich Text

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Correct Option: D
  1. public static void parse(String str) { 12. try { 13. float f= Float.parseFloat(str); 14. } catch (NumberFormatException nfe) { 15. f= 0; 16. } finally { 17. System.out.println(f); 18. } 19. } 20. public static void main(String[] args) { 21. parse(”invalid”); 22. } What is the result?
technology programming languages

  1. 0.0

  2. Compilation fails

  3. A ParseException is thrown by the parse method at runtime

  4. A NumberFormatException is thrown by the parse method at runtime

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Correct Option: B

Click the Exhibit button. 1. public class Test { 2. int x= 12; 3. public void method(int x) { 4. x+=x; 5. System.out.println(x); 6. } 7. } Given: 34. Test t = new Test(); 35. t.method(5); What is the output from line 5 of the Test class?
technology programming languages

  1. 5

  2. 10

  3. 12

  4. 17

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Correct Option: B

Given: 55. int []x= {1, 2,3,4, 5}; 56.int y[] =x; 57. System.out.println(y[2]); Which is true?
technology programming languages

  1. Line 57 will print the value 2

  2. Line 57 will print the value 3

  3. Compilation will fail because of an error in line 55

  4. Compilation will fail because of an error in line 56

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Correct Option: B

Given: 35. String #name = “Jane Doe”; 36.int$age=24; 37. Double_height = 123.5; 38. double~temp = 37.5; Which two are true? (Choose two.)
technology programming languages

  1. Line 35 will not compile.

  2. Line 36 will not compile

  3. Line 37 will not compile.

  4. Line 38 will not compile.

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Correct Option: A,D

Given: 11. public class Ball { 12. public enum Color { RED, GREEN, BLUE }; 13. public void foo() { 14. // insert code here 15. { System.out.println(c); } 16. } 17. } Which code inserted at line 14 causes the foo method to print RED, GREEN, and BLUE?
technology programming languages

  1. for( Color c : Color.values())

  2. for( Color c = RED; c <= BLUE; c++)

  3. for( Color c; c.hasNext() ; c.next())

  4. for( Color c = Color[0]; c <= Color[2]; c++)

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Correct Option: A
Explanation:

To solve this question, the user needs to know how to iterate through an enum in Java.

Option A is correct because it uses the values() method provided by the Color enum to iterate through all the possible values, and prints each one to the console.

Option B is incorrect because it treats the Color enum as if it were an integer, which it is not. It also uses an incorrect syntax for the for loop header.

Option C is incorrect because there is no hasNext() method for enums in Java. This is a method provided by the Iterator interface, which enums do not implement.

Option D is incorrect because there is no Color[0] syntax in Java. Additionally, the enum values are not guaranteed to be stored in an array in the order they are defined.

Therefore, the correct answer is:

The Answer is: A. for( Color c : Color.values())