Question 1

Which of the following is NOT a valid string in Java?

Accepted Answer

In Java, these are all valid strings.

Answer

“hello”

Answer

"a"

Answer

“123”

Answer

“@#&#36;”

Question 2

Click the image for the question.

Accepted Answer

println

Answer

print

Answer

Println

Answer

None of the options shown

Answer

Print

Question 3

_______ is the process of finding and eliminating errors in code.

Accepted Answer

Debugging

Answer

Executing

Answer

Compiling

Answer

All of the options listed

Answer

Programming

Question 4

What will happen if the computer fails to compile your code?

Accepted Answer

An error message will be displayed

Answer

The computer will freeze

Answer

The computer will start executing your code

Answer

None of the options shown

Answer

Nothing will happen

Question 5

Which of the following would Java interpret as being a String?

Accepted Answer

"Hello World"

Answer

```Hello World```

Answer

Hello World

Answer

‘Hello World’

Answer

`Hello World`

Question 6

When compiling code, the following takes place:

Accepted Answer

Code is checked; if mistakes are found the compiler lists them

Answer

Code is checked; mistakes are ignored.

Answer

Code is checked; if mistakes are found output is generated.

Answer

Code is ignored and output is generated.

Question 7

Which of the following algorithms best represents a real-world process that involves both selection and repetition, where selection involves decision making and repetition involves doing something over and over again?

Accepted Answer

Password Entry System: Prompt the user to enter a password. If the password is incorrect, display an error and allow up to three more attempts. If correct, grant access.

Answer

Vending Machine Operation: Wait for money to be inserted. If the correct amount is entered, dispense the selected item; otherwise, display an error message and return the money.

Answer

Traffic Light Control: Continuously cycle through green, yellow, and red. If a pedestrian button is pressed, extend the red light duration before continuing the cycle.

Answer

Coffee Machine Brewing: Heat water, pour it over coffee grounds, and fill the cup. If the cup is full, stop pouring; otherwise, continue until the max level is reached.

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