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 MyString1):
public MyString1(char[] chars):
public char charAt(int index);
public int length();
public MyString1 substring(int begin, int end);
public MyString1 toLowerCase();
public boolean equals(MyString1 s);
public static MyString1 valueOf(int i);
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