Pre-test CTCC0323

Which of the following is INVALID expression?

• String age = "twenty one";
• int age = 55;
• Char vowel = "one";
• double num1 = 3.1416;

Which type of conditional statement has only one possible outcome statement?

• if
• if...else
• if...elseif...else
• Switch

Which of the following conditional statement can only have two possible outcome statement?

• if
• if...else
• if...elseif...else
• Switch

Which of the following syntax in creating an expression is VALID?

• if (num1 > num2 + 4)
• else if (true || 5)
• if (num1 + num2 && age)
• else if (true > false)

Which of the following syntax in creating an expression is INVALID?

• if (true && false || true)
• else if (true || 67>45)
• if (age <= !false)
• else if (!true && false)

Which of the following variable declaration is INVALID?

• double average = 2;
• String name = "number";
• boolean stat = "true";
• char letter = '1';

c = c * 10; Can also be written as?

• c=*10;
• c*=10;
• c = c * c;
• c = 10 * c;

How do you represent a single-line comment in Java?

• /* This is a comment */
• // This is a comment
• -- This is a comment --

What is the purpose of the break statement in Java?

• It terminates the loop and transfers control to the next iteration.
• It ends the program execution.
• It is used for exception handling.
• It declares a variable.

What is the purpose of the public keyword in Java?

• Restricts the class to have only private members.
• Makes the class accessible only within the same package.
• Makes the class accessible from any other class.
• Specifies a constant value.