StringBuffer and StringBuilder Example

This is a Java code example that demonstrates the usage of StringBuffer and StringBuilder classes for manipulating strings.

Description

The code showcases how to use StringBuilder and StringBuffer to perform various string operations, such as replacement, reversal, appending, inserting, deletion, and substring extraction.

StringBuilder

The example starts by using the StringBuilder class, which provides a mutable sequence of characters. It shows the following operations:

• Replacement: The replace method is used to replace a substring of the original string with a new value.
• Reversal: The reverse method is used to reverse the characters in the string.
• Appending: The append method is used to add a string at the end of the original string.
• Insertion: The insert method is used to insert a string at a specified position in the original string.
• Substring Extraction: The substring method is used to extract a substring from the original string.
• Trimming Capacity: The trimToSize method is used to reduce the capacity of the StringBuilder to match its length.
• Deletion: The delete method is used to remove a substring from the original string.

StringBuffer

The example then demonstrates similar operations using the StringBuffer class, which is also a mutable sequence of characters. The operations performed include:

• Replacement: The replace method is used to replace a substring of the original string with a new value.
• Reversal: The reverse method is used to reverse the characters in the string.
• Appending: The append method is used to add a string at the end of the original string.
• Insertion: The insert method is used to insert a string at a specified position in the original string.
• Substring Extraction: The substring method is used to extract a substring from the original string.
• Deletion: The delete method is used to remove a substring from the original string.
• Trimming Capacity: The trimToSize method is used to reduce the capacity of the StringBuffer to match its length.

Usage

To run the code, follow these steps:

1. Make sure you have Java installed on your system.

2. Copy the code into a Java file (e.g., StringBufferStringBuilder.java).

3. Open a terminal or command prompt and navigate to the directory containing the Java file.

4. Compile the code by executing the following command:

   javac StringBufferStringBuilder.java