/*

* ============================================================================

* Program Name : StringBuffer Example

* File Name : 090-StringBuffer-Example.java

* Class Name : StringBufferExample

*

* Description:

* This program demonstrates the usage of the StringBuffer class.

* It performs various operations such as append, insert, replace,

* delete, reverse, and displays the modified StringBuffer.

*

* Objective:

* - Understand the concept of StringBuffer.

* - Learn how to modify strings using StringBuffer methods.

* - Understand that StringBuffer objects are mutable.

*

* Author : Shaik Mahaboob Basha

* Repository : 01-Core-Java

* Folder : 08-Java-Programs

* ============================================================================

*/

public class StringBufferExample {

// The main() method is the entry point of every Java application.

public static void main(String[] args) {

// Create a StringBuffer object.

StringBuffer stringBuffer = new StringBuffer("Java");

// Display the original StringBuffer.

System.out.println("Original StringBuffer : " + stringBuffer);

// Append text to the StringBuffer.

stringBuffer.append(" Programming");

System.out.println("After append() : " + stringBuffer);

// Insert text at the specified index.

stringBuffer.insert(5, "Core ");

System.out.println("After insert() : " + stringBuffer);

// Replace characters from index 5 to 9.

stringBuffer.replace(5, 9, "Advanced ");

System.out.println("After replace() : " + stringBuffer);

// Delete characters from index 5 to 14.

stringBuffer.delete(5, 14);

System.out.println("After delete() : " + stringBuffer);

// Reverse the StringBuffer.

stringBuffer.reverse();

System.out.println("After reverse() : " + stringBuffer);

// Example Output:

// Original StringBuffer : Java

// After append() : Java Programming

// After insert() : Java Core Programming

// After replace() : Java Advanced Programming

// After delete() : Java Programming

// After reverse() : gnimmargorP avaJ

}

}