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Exercise #2 Given the following classes public class String1 extends Object { private char|| str; private int size: public String1 () { size =

Exercise #2 Given the following classes public class String1 extends Object { private char|| str; private int

Exercise #2 Given the following classes public class String1 extends Object { private char|| str; private int size: public String1 () { size = -1; str= new char[80]; } public void Append (char c) { size++; str[size] = c; } public char Remove (){ char c=> str/size]; size--: return(c); }} a) Define a method updateLast that updates the last character in the string input: char x output: none b) Define a method Remove_first that removes and returns the first character in the string input: none output: char x

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