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Question: Why StringBuffer and StringBuilder classes are introduced in java when there already exist String class to represent the set of characters? The objects of String class are immutable in ...

The classes and StringBuffer() are similar, however StringBuilder() is newer and not thread-safe, meaning it can't be used by multiple threads at once. Java strings are a core component of the Java ...

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A String object is immutable. A StringBuffer object is like a String object but can be modified. A string buffer is a sequence of characters but the length and content of the sequence can be changed ...