Java Data Types and Type Casting

Which data type is used to store a single character in Java?

• byte

• char

• int

• boolean

What is the default value of a boolean variable in Java?

• true

• false

• 0

• 1

Which data type is used to store decimal values in Java?

• float

• boolean

• int

• long

What is the range of values for the byte data type in Java?

• -128 to 127

• -32,768 to 32,767

• -2^31 to 2^31-1

• -2^63 to 2^63-1

Which type of conversion involves loss of information?

• Widening conversion

• Narrowing conversion

• Implicit casting

• Explicit casting

What is the default data type for integral values in Java?

• byte

• short

• int

• long

Which data type is used to specify a true or false value in Java?

• byte

• char

• boolean

• double

What is the range of values for the float data type in Java?

• 1.40239846x10^-45 to 3.40282347x10^38

• 4.9406564581246544x10^-324 to 1.79769313486231570x10^308

• -128 to 127

• -32,768 to 32,767

used to specify the set of values and their operations.

• Primitive data type

• Data type

• Variable

• Constant

– the fundamental data types in Java. These are predefined data types by the language and named by a keyword.

• Primitive data types

• Data type

• Double

• Constant