11-27 Data Types in Java

Which of the following is a primitive data type?

• double

• Integer

• String

• List

• Number

Which of the following is a reference data type?

• int

• double

• char

• String

• boolean

Which data type should you use for decimals?

• int

• double

• char

• String

• boolean

Which data type should you use for true and false?

• int

• double

• char

• String

• boolean

Which best describes primitive data types in Java?

• Primitive data types point to an object.

• Primitive data types are rarely used in Java.

• String is a primitive data type.

• Primitive data types are the most basic building blocks of all code generated in Java.

• Primitive data types are data types used by cave people to write code.

Which best describes reference data types in Java?

• Reference data types point to an object.

• Reference data types are rarely used in Java.

• boolean is a reference data type.

• Reference data types are the most basic building blocks of all code generated in Java.

• Reference data types are found in the boring section of the library.

int x;

/* What is the correct description of the code segment? */

• The variable x has been declared as an int.

• The variable x has been initialized as an int.

• The variable x has been instantiated as an int.

• The variable x has been referenced as an int.

String str;

/* What is the correct description of the code segment? */

• The variable str has been declared as a String.

• The variable str has been initialized as a String.

• The variable str has been instantiated as a String.

• The variable str has been referenced as a String.