Lecture: Quiz 1

Question 1

What is the purpose of the if-else-if statement in Java?

Answer 1

To handle multiple complex selections

Question 2

What does the if-statement check?

Answer 2

If a Boolean expression is true

Question 3

Which statement correctly initializes a BufferedReader?

Answer 3

BufferedReader dataln = new BufferedReader(new InputStreamReader(System.in));

Question 4

What does the else-if statement allow you to do?

Answer 4

Chain multiple conditions

Question 5

What must be included when using BufferedReader to handle input?

Answer 5

try-catch block

Question 6

Which class is used to read character input from a byte stream in Java?

Answer 6

InputStreamReader

Question 7

Which of the following is a valid way to declare a variable in Java?

Answer 7

int number1;

Question 8

Which method is used to read a line of text from the keyboard using BufferedReader?

Answer 8

readLine()

Question 9

Which of the following statements is true about the if statement?

Answer 9

It can evaluate expressions.

Question 10

What will be the output of the following code if score is 75:

if (score >= 70)
System.out.println(“Good”);
else
System.out.println(“Needs Improvement);?

Answer 10

Good

Question 11

What is the purpose of the try-catch block in Java?

Answer 11

To handle exceptions

Question 12

Which of the following is NOT a decision control structure?

Answer 12

For loop

Question 13

What is the output of the following code if x is 10:

if (x < 5)
System.out.println(“Low”);
else
System.out.println(“High”); ?

Answer 13

High

Question 14

What is the output of the following code if grade is 50:

if (grade > 60)
System.out.println(“Passed”);
else
System.out.prinln(“Failed”); ?

Answer 14

Failed

Question 15

What is the purpose of JOptionPane in Java?

Answer 15

To pop up dialog boxes