
Concept explainers
(Implement the String class) The String class is provided in the Java library. Provide your own implementation for the following methods (name the new class MyString2):
public MyString2(String s);
public int compare(String s);
public MyString2 substring(int begin);
public MyString2 toUpperCase();
public char[ ] toChars();
public static MyString2 valueOf(boolean b);

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