Consider the code below:

Message msg$1=$ new Message$("08$ abc$123$xy $16$ Computer Science"$)$; $//$creates a new message object

boolean msg$1$Valid $=$ msg$1.$isValid$()$; $//$ returns true for a valid message

String text $="11$ radio$11$a$28714"$;

Message msg$2=$ new Message$($text$)$;

boolean msg$2$Valid $=$ msg$2.$isValid$()$; $//$ returns false for an invalid message

Message msg$3=$ new Message$("0492$a$116$ Computer Science"$)$;

Message msg$4=$ new Message$("03$ x$8$r $21$ Today is a great day!"$)$;

int numWords $=$ msg$4.$wordCount$()$; $//$returns $5,$ the number of words in the

$//$text message

Complete the Message class by writing the isValid$()$ and wordcount$()$ methods.

public class Message$\{$

private int idLength;

private String deviceID;

private int msgLength;

private String textMsg;

public Message$($String msg$)\{$

$//$implementation not shown

$\}$

public boolean isValid$()\{$

$//$to be written

$\}$

public int wordCount$()\{$

$//$to be written

$\}$

$\}$