Quiz 2 - Programming Keywords

Maria is writing her first Java program. She accidentally named her class file hello.java while her class inside the file is named Hello. What will likely happen when she compiles the program?

• It will run without errors

• It will produce a compile-time error

• It will produce a runtime error

• It will ignore the mismatch

A student declared the variable as: int 1stNumber = 10; What kind of error will this produce?

• Compile-time error (invalid identifier)

• Runtime error (division by zero)

• Logical error (wrong calculation)

• No error

Carlo wants to store the price of a product with decimal places. Which declaration is most appropriate?

• int price = 199.99;

• float price = 199.99;

• double price = 199.99d;

• boolean price = true;

A programmer writes: System.out.print("Hello"); System.out.print("World"); What will be the output?

• Hello World

• HelloWorld

• Hello World

• Compile-time error

While coding, Ana used the word public as her variable name. What will happen?

• It will work as expected

• It will cause a compile-time error

• It will run but give a warning

• It will automatically convert public into a String

A program outputs true when comparing two values. Which data type is most likely used?

• int

• boolean

• char

• float

John wants to store the character Z. Which is the correct declaration?

• char letter = "Z";

• char letter = 'Z';

• String letter = Z;

• int letter = Z;

A student mistakenly wrote this code: float average = 89.5; What is wrong with it?

• Missing double quotes

• Missing single quotes

• Missing f at the end of the literal

• Nothing is wrong

If a programmer needs to group multiple statements together, which should be used?

• Parentheses ()

• Square brackets []

• Curly braces {}

• Angle brackets <>

Which of the following will cause a runtime error rather than a compile-time error?

• Using a reserved keyword as a variable name

• Forgetting a semicolon at the end of a statement

• Dividing a number by zero during execution

• Misspelling the main method