Help with Java, need to complete missing partsPROBLEM

The Motorola $68000$ family of CPUs is a Complex Instruction Set Computer $($CISC$)$; ie$,$ there

are many formats, lengths, etc. We will consider only four instructions with a single addressing

mode. An instruction in assembly language is written like

ADD.W D$3,$D$5$

That instruction says to add a "word" $(16-$bit$)$ value from data register $3$ to the value in data

register $5.$ In machine language, the instruction looks like

Binary

Hex

$1101011001000101$

D$645$

The format of the instructions that we will consider is

where $"$s$"$ is the size of the data

and $"x"$ and $"y"$ are register numbers $(0-7).$

ASSIGNMENT

You will be given a Java application with a graphical user interface that allows a user to encode

and decode M$68000$ instructions. The user will enter a four digit hex number or $16$ digit binary

number and request that it be decoded into assembly language or enter an assembly language

instruction and request that it be encoded into hex and binary representations. You must write the

code for the methods encode$(),$ decodeBin$(),$ and decodeHex$()$ which are called from the

actionPerformed method when a button is pressed. Your program needs to encode$/$decode only

the four instructions shown above.

Display an error message if the input cannot be encoded$/$decoded$.$

Your program must check for all possible errors.

NOTE: This lab is intended to give you experience in using bitwise operators. You must

encode$/$decode the machine instruction as a short $($or an int$)$ and convert to a String only for

display. Do not use a String to manipulate the machine language instruction. You may use a

String to manipulate assembly language instruction.

Use the code in the file "Lab$1.$java". Do not change any of that code. You should only fill in

the three methods at the end.