$*$ A class that implements a very simplified StringBuilder$-$like class. This

$*$ class will not execute on its own $-$ you will need to use code provided in

$*$ the TestSimpleStringBuilder.java class to run this code.

$*$

$*$ @author Miles McGann

$*$ @author No partner

$*$ @version $112624$

$*$

$*/$

import java.util.ArrayList;

import java.util.List;

public class SimpleStringBuilder $\{$

List list;

private void createEmptyBuilder$()\{$

this.list $=$ new ArrayList;

$\}$

$/**$

$*$ constructs an empty SimpleStringBuilder

$*/$

public SimpleStringBuilder$()\{$

this.createEmptyBuilder$()$;

$\}$

$/**$

$*$ @param input

$*/$

public SimpleStringBuilder$($String input$)\{$

this.createEmptyBuilder$()$;

for $($int i $=0$; i $$ input.length$()$; i$++)\{$

this.list.add$($input$.$charAt$($i$))$;

$\}$

$\}$

$/**$

$*$ @return the value of SimpleStringBuilder as a String

$*/$

@Override

public String toString$()\{$

String myString $=""$;

for $($int i $=0$; i $$ this.list.size$()$; i$++)\{$

myString $=$ myString $+$ this.list.get$($i$)$;

$\}$

return myString;

$\}$

$/**$

$*$

$*$ @param i

$*$ @return the character at position to be checked

$*/$

public char charAt$($int i$)\{$

$//$ returns the character at specified index

return list.get$($i$)$;

$\}$

$/**$

$*$ @return the length of the StringBuilder

$*/$

public int length$()\{$

$//$ return the size of the string

return list.size$()$;

$\}$

$/**$

$*$ Replaces the character at position i with character c

$*$ @param i

$*$ i index to be replaces

$*$ @param c

$*$ c character to use in replacement

$*/$

public void replaceCharAt$($int i$,$char c$)\{$

$//$ removes the character from the index and add the new character

list.remove$($i$)$;

list.add$($i$,$ c$)$;

$\}$

$/**$

$*$ Appends the character c to the end of the StringBuilder

$*$ @param i

$*$ @param c

$*/$

public void append$($char c$)\{$

$//$ adds the character to the string

list.add$($c$)$;

$\}$

$/**$

$*$ Inserts the character at position i

$*$ @param i

$*$ index to insert at

$*$ @param c

$*$ character to be inserted

$*/$

public void insert$($int i$,$char c$)\{$

$//$ adds the element at ith position

list.add$($i$,$ c$)$;

$\}$

$/**$

$*$ Deletes the character at position i

$*$ @param i

$*$ index to delete

$*/$

public void delete$($int i$)\{$

$//$ removes the character at index i

list.remove$($i$)$;

$\}$

$\}$

$//$ this is the test code.. $**$

$*$ A program that tests the SimpleStringBuilder class created in this lab.

$*$

$*$ @author Jeremy Morris

$*$ @version $20181101$

$*$

$*/$

public class TestSimpleStringBuilder $\{$

$/**$

$*$ A simple program used to test the SimpleStringBuilder class

$*$

$*$ @param args

$*/$

public static void main$($String$[]$ args$)\{$

SimpleStringBuilder myBuilder $=$ new SimpleStringBuilder$("$Hello World"$)$;

System.out.println$("$String is: $"+$ myBuilder.toString$())$;

$//$ Code below this comment will not work until you complete the required methods

System.out.println$("$Length is: $"+$ myBuilder.length$())$;

System.out.println$("$Char $3$ is: $"+$ myBuilder.charAt$(3))$;

myBuilder.replaceCharAt$(3,\text{'}$p$\text{'})$;

System.out.println$("$String is: $"+$ myBuilder.toString$())$;

$//$ Code below this comment will not work until you complete the extra methods

$//$ myBuilder.append$(\text{'}!\text{'})$;

$//$ System.out.println$("$String is: $"+$myBuilder.toString$())$;

$//$ myBuilder.deleteCharAt$(3)$;

$//$ System.out.println$("$String is: $"+$myBuilder.toString$())$;

$//$ System.out.println$("$Length is: $"+$myBuilder.length$())$;

$//$ myBuilder.insert$(3,\text{'}$z$\text{'})$;

$//$ System.out.println$("$String is: $"+$myBuilder.toString$())$;

$//$ System.out.println$("$Length is: $"+$myBuilder.length$())$;

$\}$

$\}//$ solve these errors in the photos as well as $18$ and $19$ that i will write out. Provide a code I can just submit from here

$18.$ delete $\text{'}$b$\text{'}$ from string "abc"

zyLabsUnitTest.java:$24$: error: cannot find symbol testWord.deleteCharAt$(1)$; $^$ symbol: method deleteCharAt$($int$)$ location: variable testWord of type SimpleStringBuilder $1$ error

$19.$

your output:

String is: Hello World

Length is: $11$

Char $3$ is: l

String is: Helpo World

expected output:

String is: Hello World

Length is: $11$

Char $3$ is: l

String is: Helpo World

String is: Helpo World! ln$)$

String is: Helo World! ln$)$

Length is: ln$)$

String is: Helzo World! ln$)$

Length is: ln$)$