Java 3 Test Review

What is the difference between the "==" and "=" operators?

• "==" tests for equality, "=" is an assignment
• "=" tests for equality, "==" is an assignment
• "==" is used on strings, while  "=" is used on numbers

When using an if() statement, what must go within the parentheses?

• A logical expression
• A mathematical expression
• A String
• An else clause

What will be printed to the screen after the following statements execute?if (false) System.out.print("1"); System.out.print("2");

• 2
• 12
• 21
• nothing

How many "else if ()" clauses can you have after an if() expression?

• 0, 1, or more
• 1 only
• 0
• Up to 3

Which of the following expressions are valid?

• if (6 + 3 > 5)
• if (6 + 3)
• if (6 + 3 = 5)
• They are all valid if() expressions

What keyword would you use to halt the execution of a function immediately and transfer control back to the calling function?

• return
• break
• exit
• done

Which of the following for() loops will execute 10 times?

• All of these will execute 10 times
• for (int index = 0; index < 10; index++)
• for (int index = 1; index <= 10; index++)
• for (int index = 10; index < 20; index++)

Which of the following update expressions is valid to replace the ??? phrase within the for() loop below?for (int i=0; i<10; ???)

• All of these are valid
• i++
• i = i - 5
• i = i * 2

What keyword can you use to terminate a for() loop early and continue program flow after the loop body?

• break
• done
• exit
• return

Which of the following scenarios is a good fit for a while() loop?

• All of these are true
• You want to execute a loop that does not involve a numeric index
• You want to build a loop that may never execute
• You want to execute a loop so long as some condition is true