Bits, Bytes, Bitwise and Shift Operations
This chapter provides tutorial notes and tutorial examples on bits, bytes and bitwise operations. Topics include bits and bytes as storage units; 'byte' data type and (byte) casting; bitwise operations; shift operations.
What Are Bits and Bytes
"byte" Data Type and Implicit Casting
Operations on "byte" Data Type Values
Bitwise Operations on "byte" Values
Bitwise Operations on "byte" Values - Example Program
Shift Operations - Left, Right or Unsigned Right Shift
- Bit is the smallest storage unit that can only store two possible values: 0 and 1.
- Byte is a storage unit that holds 8 bits.
- "byte" is a primitive data type in Java. A "byte" variable can hold an integer in the range of -128 to 127.
- To assign values to "byte" variables, you need to cast original values to "byte" data type implicitly
or explicitly (using "(byte)").
- "byte" variables can participate any arithmetic and comparison operations. But their values will be converted
to "int" data type before the operation.
- Bitwise operations are defined for "int" data type, not for "byte".
- Shift operations are defined for "int" data type, not for "byte".
Table of Contents
About This Book
Installing JDK 1.8 on Windows
Execution Process, Entry Point, Input and Output
Primitive Data Types and Literals
►Bits, Bytes, Bitwise and Shift Operations
Managing Bit Strings in Byte Arrays
Reference Data Types and Variables
StringBuffer - The String Buffer Class
System Properties and Runtime Object Methods
Generic Classes and Parameterized Types
Generic Methods and Type Inference
Lambda Expressions and Method References
Execution Threads and Multi-Threading Java Programs
ThreadGroup Class and "system" ThreadGroup Tree
Synchronization Technique and Synchronized Code Blocks
Deadlock Condition Example Programs
Garbage Collection and the gc() Method
PDF Printing Version