The StringBuilder class is providedin the Java library. Provide your own implementation for the following methods(name the new class MyStringBuilder2):public MyStringBuilder2();public MyStringBuilder2(char[] chars);public MyStringBuilder2(String s);public MyStringBuilder2 insert(int offset, MyStringBuilder2 s);public MyStringBuilder2 reverse();public MyStringBuilder2 substring(int begin);public MyStringBuilder2 toUpperCase();

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Methods of StringBuilder class

The StringBuilder class can be used to create mutable strings. The methods defined in the StringBuilder class are widely used to manipulate and concatenate strings. It is a non-synchronized class which has public methods that can be accessed by multiple threads. It is not thread-safe.