What Do You Mean by Mutable String?

a mutable string can be changed, and an immutable string cannot be changed.

What is a mutable string?

Therefore mutable strings are those strings whose content can be changed without creating a new object. StringBuffer and StringBuilder are mutable versions of String in java, whereas the java String class is immutable. Immutable objects are those objects whose contents cannot be modified once created.

What is meant by immutable string?

When you create a string, it is immutable. That means it is read-only. When something is immutable or read-only, it means it cannot be changed at a later time.