Tag: programming languages

Questions Related to programming languages

A method is declared as protected. What classes can access this method? (Choose two. Each option is a correct answer.)
technology programming languages
    1. Classes in the same package
    1. All classes
    1. Only the class within the package that defined the method
    1. Classes that inherit access
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Correct Option: A,D

What is the purpose of the break statement?
technology programming languages
    1. It jumps out of the loop back to the calling method.
    1. It jumps out of the loop to the next statement after the loop.
    1. It stops the execution of the program and of the virtual machine.
    1. It stops the innermost iteration and continues with the next iteration of the loop.
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Correct Option: B

Between which two lines should you insert a break or a continue statement to print the message "Please close the door. I feel a draft. Thank you"? (Line numbers are included only for clarity's sake) 1. String door="open"; 2. boolean draft=false; 3. boolean shivers=false; 4. while (door=="open") { 5. draft=true; 6. System.out.println("Please close the door."); 7. if (draft) { 8. shivers=true; 9. System.out.println("I feel a draft."); 10. door="close"; 11. if (shivers) { 12. System.out.println("I'm shivering."); 13. } 14. } 15. } 16. if (door=="close") { 17. System.out.println("Thank you"); 18. shivers=false; 19. }
technology programming languages
    1. Replace lines 7 to 14 with a break statement.
    1. Replace lines 7 to 14 with a continue statement.
    1. Replace line 12 with a continue statement.
    1. Insert a break statement between lines 16 and 17.
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Correct Option: C

What argument types are legal for switch statements? (Choose all that apply)
technology programming languages
    1. char
    1. byte
    1. short
    1. int
    1. boolean
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Correct Option: A,B,C,D

The following are data type conversions that would be performed when initializing variables. Which one may lose information in the conversion process?
technology programming languages
    1. From an int to a long
    1. From a byte to an int
    1. From a short to a byte
    1. From an int to a double

  5. 5) All of the above

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Correct Option: E

Which of the following are appropriate ways to use assertions? (Choose all that apply) You have not made any correct choices. The correct options are as follows

technology programming languages

  1. 1 public void myMethod(int x) {

  2. 2 private void myMethod(int x) {

  3. 3 switch(z) {

  4. 4 private void anotherMethod() {

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Correct Option: B,C

You are writing an assertion expression in your code. Which code is legal?
technology programming languages

  1. 1 int z = 0;

  2. 2 assert (z = 9);

  3. 3 assert (x ==5);

  4. 4 int z = 0;

  5. 5 boolean x = true;

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Correct Option: C

you assign a value to the primitive variables x and y as indicated below. Which declaration for z must be used for this code to properly compile? byte x = 3; byte y = 2; // insert declaration for z here z = x + y;
technology programming languages
    1. byte z;
    1. int z;
    1. char z
    1. None of these options are correct
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Correct Option: B

You have declared a single dimensional array of type int using the following code: int [] MyInt = new int [10]; You are attempting to initialize all of the arrays segments with a for loop using the following code: for (int x = 0; x <= 10; x++) { MyInt[x] = x; } What will happen when you attempt to compile the program that contains this code?
technology programming languages
    1. The program will run successfully with no errors or warnings.
    1. The program will halt with a runtime exception.
    1. The program will halt with a compiler error.
    1. The program will run successfully with no errors but a warning will be generated.
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Correct Option: B

What is the result of int 8 >> 1?
technology programming languages
    1. 0000 0000 0000 0000 0000 0000 0000 0100
    1. 0000 0000 0000 0000 0000 0000 0000 1000
    1. 0000 0000 0000 0000 0000 0000 0001 0000
    1. 0000 0000 0000 0000 0000 0000 0000 0111
    1. 0000 0000 0000 0000 0000 0000 0000 1001
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Correct Option: A