This is a Java Program to implement Circular Buffer. A circular buffer, cyclic buffer or ring buffer is a data structure that uses a single, fixed-size buffer as if it were connected end-to-end. This structure lends itself easily to buffering data streams.
Here is the source code of the Java Program to implement Circular Buffer. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.
/** ** Java Program to implement Circular Buffer **/ import java.util.Scanner; /** Class Circular Buffer **/ class CircularBuffer { private int maxSize; private int front = 0; private int rear = 0; private int bufLen = 0; private char[] buf; /** constructor **/ public CircularBuffer(int size) { maxSize = size; front = rear = 0; rear = 0; bufLen = 0; buf = new char[maxSize]; } /** function to get size of buffer **/ public int getSize() { return bufLen; } /** function to clear buffer **/ public void clear() { front = rear = 0; rear = 0; bufLen = 0; buf = new char[maxSize]; } /** function to check if buffer is empty **/ public boolean isEmpty() { return bufLen == 0; } /** function to check if buffer is full **/ public boolean isFull() { return bufLen == maxSize; } /** insert an element **/ public void insert(char c) { if (!isFull() ) { bufLen++; rear = (rear + 1) % maxSize; buf[rear] = c; } else System.out.println("Error : Underflow Exception"); } /** delete an element **/ public char delete() { if (!isEmpty() ) { bufLen--; front = (front + 1) % maxSize; return buf[front]; } else { System.out.println("Error : Underflow Exception"); return ' '; } } /** function to print buffer **/ public void display() { System.out.print("\nBuffer : "); for (int i = 0; i < maxSize; i++) System.out.print(buf[i] +" "); System.out.println(); } } /** Class CircularBufferTest **/ public class CircularBufferTest { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println("Circular Buffer Test\n"); System.out.println("Enter Size of Buffer "); int n = scan.nextInt(); /* creating object of class CircularBuffer */ CircularBuffer cb = new CircularBuffer(n); /* Perform Circular Buffer Operations */ char ch; do { System.out.println("\nCircular Buffer Operations"); System.out.println("1. insert"); System.out.println("2. remove"); System.out.println("3. size"); System.out.println("4. check empty"); System.out.println("5. check full"); System.out.println("6. clear"); int choice = scan.nextInt(); switch (choice) { case 1 : System.out.println("Enter character to insert"); cb.insert( scan.next().charAt(0) ); break; case 2 : System.out.println("Removed Element = "+ cb.delete()); break; case 3 : System.out.println("Size = "+ cb.getSize()); break; case 4 : System.out.println("Empty status = "+ cb.isEmpty()); break; case 5 : System.out.println("Full status = "+ cb.isFull()); break; case 6 : System.out.println("\nBuffer Cleared\n"); cb.clear(); break; default : System.out.println("Wrong Entry \n "); break; } /* display Buffer */ cb.display(); System.out.println("\nDo you want to continue (Type y or n) \n"); ch = scan.next().charAt(0); } while (ch == 'Y'|| ch == 'y'); } }
Circular Buffer Test Enter Size of Buffer 5 Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 1 Enter character to insert a Buffer : a Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 1 Enter character to insert b Buffer : a b Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 1 Enter character to insert c Buffer : a b c Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 1 Enter character to insert d Buffer : a b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 1 Enter character to insert e Buffer : e a b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 1 Enter character to insert f Error : Underflow Exception Buffer : e a b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 2 Removed Element = a Buffer : e a b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 1 Enter character to insert f Buffer : e f b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 3 Size = 5 Buffer : e f b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 5 Full status = true Buffer : e f b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 2 Removed Element = b Buffer : e f b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 3 Size = 4 Buffer : e f b c d Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 6 Buffer Cleared Buffer : Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 3 Size = 0 Buffer : Do you want to continue (Type y or n) y Circular Buffer Operations 1. insert 2. remove 3. size 4. check empty 5. check full 6. clear 4 Empty status = true Buffer : Do you want to continue (Type y or n) n
Related posts:
Java Program to Generate Randomized Sequence of Given Range of Numbers
Spring Boot Configuration with Jasypt
Java Program to Convert a Decimal Number to Binary Number using Stacks
Java Program to Construct an Expression Tree for an Prefix Expression
Java Program to Implement Self Balancing Binary Search Tree
Java Program to Implement RoleList API
Java Program to Check the Connectivity of Graph Using BFS
Control Structures in Java
Guide to BufferedReader
Tính đóng gói (Encapsulation) trong java
Login For a Spring Web App – Error Handling and Localization
Custom JUnit 4 Test Runners
An Example of Load Balancing with Zuul and Eureka
Java Program to Implement CopyOnWriteArrayList API
Java Program to Perform Polygon Containment Test
RestTemplate Post Request with JSON
Java Program to Generate a Random UnDirected Graph for a Given Number of Edges
Spring Boot - Exception Handling
A Guide to EnumMap
Spring Data JPA @Query
Comparing getPath(), getAbsolutePath(), and getCanonicalPath() in Java
Spring Boot - Service Components
Java Program to Perform Sorting Using B-Tree
Java Switch Statement
HttpClient Connection Management
Hướng dẫn sử dụng Java Annotation
Registration – Password Strength and Rules
Handling Errors in Spring WebFlux
Optional trong Java 8
Java Program to Implement Meldable Heap
Java Program to Implement ArrayBlockingQueue API
HttpClient 4 Cookbook