Instruction:Source.java is required

You must run and compile the attachments before attempting the exercises above.Compile and run Appletimport java.awt.$*$;import java.applet.$*$;import java.awt.event.$*$;public class prob$5$ extends Applet implements ActionListener$\{$Label greeting $=$ new Label$("$Enter Category $1-7")$;Font IFont $=$ new Font$("$TimesRoman$",$ Font.ITALIC, $14)$;Label head$1=$ new Label$("$ SEAT SECTION $")$;Label head$2=$ new Label$("$PRICE PER SEAT"$)$;Button submit $=$ new Button$("$Submit$")$;Button clear $=$ new Button$("$Clear$")$;TextField category $=$ new TextField$("",3)$;TextField name $=$ new TextField$("",15)$; TextField cost $=$ new TextField$("",9)$;public void init$()\{$greeting$.$setFont$($IFont$)$;add$($greeting$)$;add$($category$)$;add$($submit$)$;add$($clear$)$;add$($name$)$;add$($cost$)$;add$($head$1)$;add$($head$2)$; category.addActionListener$($this$)$;category.requestFocus$()$;submit.addActionListener$($this$)$;clear.addActionListener$($this$)$;$\}$public void actionPerformed$($ActionEvent thisEvent$)\{$int temp;String catString $=$ category.getText$()$;try$\{$temp $=$ Integer.parseInt$($ catString $)$;$\}$catch$($ NumberFormatException e $)\{$temp $=0$;$\}$switch$($temp$)\{$case $1$:name.setText$("$Courtside$")$;cost$.$setText$("35\mathrm{.}00")$;category.requestFocus$()$;break;case $2$:name.setText$("$On The Floor"$)$;cost$.$setText$("22\mathrm{.}00")$;category.requestFocus$()$;break;case $3$:name.setText$("$The Perimeter"$)$;cost$.$setText$("15\mathrm{.}00")$;category.requestFocus$()$;break;case $4$:name.setText$("$Under The Hoop"$)$;cost$.$setText$("13\mathrm{.}00")$;category.requestFocus$()$;break;case $5$:name.setText$("$Above The Rim"$)$;cost$.$setText$("12\mathrm{.}00")$;category.requestFocus$()$;break;case $6$:name.setText$("$Full Court"$)$;cost$.$setText$("12\mathrm{.}00")$;category.requestFocus$()$;break;case $7$:name.setText$("$High Five"$)$;cost$.$setText$("9\mathrm{.}00")$;category.requestFocus$()$;break;default:name.setText$("$INVALID$")$;cost$.$setText$("0")$;category.requestFocus$()$;$\}$if$($thisEvent$.$getActionCommand$()==$ "Clear"$)\{$category$.$setText$("")$;name.setText$("")$;cost$.$setText$("")$;category.requestFocus$()$;$\}$invalidate$()$;validate$()$;$\}\}$