APCSA unit 2 question set 4

_______________________ occurs when an integer value is divided by another integer value, resulting in the decimal places being thrown away.

What class is used to retrieve data from the keyboard?

Which of the following operators is used for string concatenation in Java?

• &
• |
• %
• +

__________________ operations are binary operations that replace the value of a variable.

What will be the output of the following code?

String a = "5";
String b = "10";
System.out.println(a + b);

 

• 5 + 10

• 15

• 510

• 5 10

_________________ operators are operators that modify the value of a variable, rather than replacing the value.

Operator ___________________ is the order in which operations are performed.

What is the result of the following code?

String firstName = "John";
String lastName = "Doe";
String fullName = lastName + " " + firstName;

________________ is treating a variable as though it were another type.

Correct answer:

Casting

What is string concatenation in Java?

 

• String concatenation in Java is the process of combining multiple strings into one.
• String concatenation is a method for converting strings to integers.
• String concatenation in Java refers to the use of the '+' operator for arithmetic operations.
• String concatenation is the process of splitting strings apart.