Comprog(midterm)

describe possible operations on the data and the storage method.

• Data Types

• .

The data types in Java are classified into two (2): primitive or standard data types

• primitive

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The data types in Java are classified into two (2): abstract or derived data types.

• abstract

• .

are built into the Java language. These are data that are not objects and have no methods. The Java compiler has detailed instructions on the valid operations this data type supports.

• Primitive Data Types

• .

• e

• .

Java defines Byte, Short, Int, and Long as Integer data types. Since Java does not support unsigned integers, these four (4) are signed, positive, and negative values

• Integer Types

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defines the sign of an integer value, and Java manages it differently by adding a special “unsigned right shift” operation.

• High-order bit

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The smallest integer type that represents a small number. It is used to declare a variable holding a natural number between -128 and 127. Byte variables are declared by use of the byte keyword. Syntax: byte b;

• Byte

• Short

• Int

• Long

An integer is considered Short if its value is between -32768 and 32767. Short data types declare a variable that can hold numbers in that range.

• Byte

• Short

• Int

• Long

This data type can handle larger numbers and is considered the best choice when an integer is needed because when Byte and Short values are used in an expression, they are promoted to Int automatically.

• Byte

• Short

• Int

• Long