Java Tutorials: StringBuilder Class Methods (length(), reverse(), setLength(), setCharAt(index), subString(), replace())

In this tutorial, you will learn the following:

• StringBuilder Methods:
  • length()
  • reverse()
  • setLength()
  • setCharAt(index)
  • subString()
  • replace()

You would need the following inorder to following this tutorial:

• An Integrated Development Environment(IDE) installed that can run Java (e.g Eclipse, IntelliJ,Netbeans)
• JDK 1.X installed on your Pc
• Of course willingness to learn

Difficulty

• Intermediate

Description

In this tutorial, we take a look at the StringBuilder class.
Strings are immutable meaning they cant e destroyed once created, but a StringBuilder is mutably making it the best option for string manipulation.
The following are a few methods amongst many:

length(): This method returns the length of the StringBuilder object which is the total number of characters.

subString(index): This returns a substring of the StringBuilder object starting from the index specified to the end of the StringBuilder object which is the total length of the StringBuilder object.

setCharAt(index): This changes the character at the specified index.

Video Tutorial Link:

NB: This video has only being shared on my Youtube Channel

Tutorial codes can be gotten from this github repository: https://github.com/generalkolo/Javacodes