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

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2018-02-04 05:36

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.