app$$ A package $($folder$)$ where you will place your implementation for the$$DrawingApp$$project$.$ Make sure you fix any problems associated with the DrawingApp project. Notice that just because you got a $100$ in the DrawingApp project, it does not mean it is bug$-$free. The secret and release tests for this project could find some of these bugs. If you failed some secret$/$release tests, a TA$,$ during office hours, could provide information about the tests. You can resubmit your code and see release$/$secret tests results in the submit server for the Drawing App project.

gui$$ A package $($folder$)$ providing code that supports the graphical display and animation of a diagram. You will use the methods provided by the GraphicalUtilities.java class. Do not modify anything in this package.

system$$ A package $($folder$)$ where you will implement the classes associated with this project. Sample Driver

The following driver $($and associated output$)$ illustrates the functionality of some of the methods you need to implement.

public class DriverExample $\{$ public static void main$($String$[]$ args$)\{$ char$[][]$ array$1=\{\{\text{'}$A$\text{'},\text{'}$B$\text{'}\},\{\text{'}$C$\text{'},\text{'}$D$\text{'}\},\{\text{'}$E$\text{'},\text{'}$F$\text{'}\}\}$; String answer $=$ "Original:

$"$; answer $+=$ getTwoDimArrayString$($array$1)$; answer $+="$

After one top rotation:

$"$; TwoDimArrayUtil.rotateTopOneRow$($array$1)$; answer $+=$ getTwoDimArrayString$($array$1)$; answer $+="$

After two top rotations:

$"$; TwoDimArrayUtil.rotateTopOneRow$($array$1)$; answer $+=$ getTwoDimArrayString$($array$1)$; answer $+="$

After left rotation:

$"$; TwoDimArrayUtil.rotateLeftOneColumn$($array$1)$; answer $+=$ getTwoDimArrayString$($array$1)$; char$[][]$ array$2=\{\{\text{'}$G$\text{'},\text{'}$H$\text{'}\},\{\text{'}$I$\text{'},\text{'}$J$\text{'}\},\{\text{'}$K$\text{'},\text{'}$L$\text{'}\}\}$; char$[][]$ array$3=\{\{\text{'}$M$\text{'},\text{'}$N$\text{'}\},\{\text{'}$O$\text{'},\text{'}$P$\text{'}\},\{\text{'}$Q$\text{'},\text{'}$R$\text{'}\}\}$; answer $+="$

After left right append:

$"$; answer $+=$ getTwoDimArrayString$($TwoDimArrayUtil$.$appendLeftRight$($array$2,$ array$3))$; answer $+="$

After top bottom append:

$"$; answer $+=$ getTwoDimArrayString$($TwoDimArrayUtil$.$appendTopBottom$($array$2,$ array$3))$; answer $+="$

Animation of horizontal bars:"; int maxRows $=6,$ maxCols $=6,$ bars $=3,$ animationType $=1$; char color$1=\text{'}$R$\text{'},$ color$2=\text{'}$G$\text{'},$ color$3=\text{'}$B$\text{'}$; HorizontalBars horizontalBars $=$ new HorizontalBars$($maxRows$,$ maxCols, bars, color$1,$ color$2,$ color$3,$ animationType$)$; answer $+="$

Original:

$"$; answer $+=$ getTwoDimArrayString$($horizontalBars$.$getBoard$())$; for $($int i $=1$; i $<=3$; i$++)\{$ answer $+="$

Animation Step: $"+$ i $+"$

$"$; char$[][]$ nextAnimationStep $=$ horizontalBars.nextAnimationStep$()$; answer $+=$ getTwoDimArrayString$($nextAnimationStep$)$; $\}$ System.out.println$($answer$)$; $\}$ private static String getTwoDimArrayString$($char$[][]$ array$)\{$ if $($array $==$ null$)\{$ throw new IllegalArgumentException$("$Invalid parameter getTwoDimArrayString$()")$; $\}$ String answer $=""$; for $($int row $=0$; row $<$ array.length $-1$; row$++)\{$ answer $+=$ Arrays.toString$($array$[$row$])+"$

$"$; $\}$ answer $+=$ Arrays.toString$($array$[$array$.$length $-1])$; return answer; $\}\}$

Output

Original: $[$A$,$ B$][$C$,$ D$][$E$,$ F$]$ After one top rotation: $[$C$,$ D$][$E$,$ F$][$A$,$ B$]$ After two top rotations: $[$E$,$ F$][$A$,$ B$][$C$,$ D$]$ After left rotation: $[$F$,$ E$][$B$,$ A$][$D$,$ C$]$ After left right append: $[$G$,$ H$,$ M$,$ N$][$I$,$ J$,$ O$,$ P$][$K$,$ L$,$ Q$,$ R$]$ After top bottom append: $[$G$,$ H$][$I$,$ J$][$K$,$ L$][$M$,$ N$][$O$,$ P$][$Q$,$ R$]$ Animation of horizontal bars: Original: $[$R$,$ R$,$ R$,$ R$,$ R$,$ R$][$R$,$ R$,$ R$,$ R$,$ R$,$ R$][$G$,$ G$,$ G$,$ G$,$ G$,$ G$][$G$,$ G$,$ G$,$ G$,$ G$,$ G$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$]$ Animation Step: $1[$R$,$ R$,$ R$,$ R$,$ R$,$ R$][$G$,$ G$,$ G$,$ G$,$ G$,$ G$][$G$,$ G$,$ G$,$ G$,$ G$,$ G$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$][$R$,$ R$,$ R$,$ R$,$ R$,$ R$]$ Animation Step: $2[$G$,$ G$,$ G$,$ G$,$ G$,$ G$][$G$,$ G$,$ G$,$ G$,$ G$,$ G$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$][$R$,$ R$,$ R$,$ R$,$ R$,$ R$][$R$,$ R$,$ R$,$ R$,$ R$,$ R$]$ Animation Step: $3[$G$,$ G$,$ G$,$ G$,$ G$,$ G$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$][$B$,$ B$,$ B$,$ B$,$ B$,$ B$][$R$,$ R$,$ R$,$ R$,$ R$,$ R$][$R$,$ R$,$ R$,$ R$,$ R$,$ R$][$G$,$ G$,$ G$,$ G$,$ G$,$ G$]$