import javax.swing.$*$;

import java.awt.event.$*$;

import java.util.$*$;

public class Lab$1$ extends JFrame implements ActionListener $\{$

static final long serialVersionUID $=1$L;

private JTextField assemblerInstruction;

private JTextField binaryInstruction;

private JTextField hexInstruction;

private JLabel errorLabel;

public Lab$1()\{$

setTitle$("$M$68000")$;

setBounds$(100,100,400,300)$;

setDefaultCloseOperation$($JFrame$.$EXIT$\_$ON$\_$CLOSE$)$;

getContentPane$().$setLayout$($null$)$;

assemblerInstruction $=$ new JTextField$()$;

assemblerInstruction.setBounds$(25,24,134,28)$;

getContentPane$().$add$($assemblerInstruction$)$;

assemblerInstruction.setColumns$(10)$;

JLabel lblAssemblyLanguage $=$ new JLabel$("$Assembly Language"$)$;

lblAssemblyLanguage.setBounds$(25,64,160,16)$;

getContentPane$().$add$($lblAssemblyLanguage$)$;

binaryInstruction $=$ new JTextField$()$;

binaryInstruction.setBounds$(25,115,180,28)$;

getContentPane$().$add$($binaryInstruction$)$;

binaryInstruction.setColumns$(10)$;

hexInstruction $=$ new JTextField$()$;

hexInstruction.setBounds$(236,115,134,28)$;

getContentPane$().$add$($hexInstruction$)$;

hexInstruction.setColumns$(10)$;

JLabel lblBinary $=$ new JLabel$("$Binary Instruction"$)$;

lblBinary.setBounds$(25,155,190,16)$;

getContentPane$().$add$($lblBinary$)$;

JLabel lblHexEquivalent $=$ new JLabel$("$Hex Instruction"$)$;

lblHexEquivalent.setBounds$(236,155,131,16)$;

getContentPane$().$add$($lblHexEquivalent$)$;

errorLabel $=$ new JLabel$("")$;

errorLabel.setBounds$(25,235,280,16)$;

getContentPane$().$add$($errorLabel$)$;

JButton btnEncode $=$ new JButton$("$Encode$")$;

btnEncode.setBounds$(230,25,117,29)$;

getContentPane$().$add$($btnEncode$)$;

btnEncode.addActionListener$($this$)$;

JButton btnDecode $=$ new JButton$("$Decode Binary"$)$;

btnDecode.setBounds$(30,183,170,29)$;

getContentPane$().$add$($btnDecode$)$;

btnDecode.addActionListener$($this$)$;

JButton btnDecodeHex $=$ new JButton$("$Decode Hex"$)$;

btnDecodeHex.setBounds$(230,183,150,29)$;

getContentPane$().$add$($btnDecodeHex$)$;

btnDecodeHex.addActionListener$($this$)$;

$\}$

public void actionPerformed$($ActionEvent evt$)\{$

errorLabel.setText$("")$;

if $($evt$.$getActionCommand$().$equals$("$Encode$"))\{$

encode$()$;

$\}$ else if $($evt$.$getActionCommand$().$equals$("$Decode Binary"$))\{$

decodeBin$()$;

$\}$ else if $($evt$.$getActionCommand$().$equals$("$Decode Hex"$))\{$

decodeHex$()$;

$\}$

$\}$

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

Lab$1$ window $=$ new Lab$1()$;

window.setVisible$($true$)$;

$\}$

String shortToHex$($short x$)\{$

String ans$=""$;

for $($int i$=0$; i$<4$; i$++)\{$

int hex $=$ x & $15$;

char hexChar $="0123456789$ABCDEF".charAt$($hex$)$;

ans $=$ hexChar $+$ ans;

x $=($short$)($x $>>4)$;

$\}$

return ans;

$\}$

String shortToBinary$($short x$)\{$

String ans$=""$;

for$($int i$=0$; i$<16$; i$++)\{$

ans $=($x & $1)+$ ans;

x $=($short$)($x $>>1)$;

$\}$

return ans;

$\}$

$/$

$************************************************************************/$

$/*$ DO NOT CHANGE ANYTHING ABOVE THIS POINT $/$

$/************************************************************************/$

$\}$

I need help with creating the encode, decodeBin, and decodeHex