Please help me with this:

File Input Streams

For this graded assignment, you will write a program that will use a FileInputStream to read bytes from a file, and display both a hex version of the byte, and it's corresponding ASCII code $($if it is a printable character$).$

Details

This program should be able to read any file the user selects.$$ To make this easy for the user to select a file, we're going to use the JFileChooser dialog.$$ This is from the Swing framework $($precursor to JavaFX$).$ You can use the following code to bring up a dialog box that will allow you to navigate to a file on your computer:

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

JFileChooser fc $=$ new JFileChooser$()$;

$$ int returnVal $=$ fc$.$showOpenDialog$($null$)$;

$$ if $($returnVal $==$ JFileChooser.APPROVE$\_$OPTION$)\{$

$$ File file $=$ fc$.$getSelectedFile$()$;

$$ System.out.println$("$File contents: $"+$ file.getAbsolutePath$())$;

$$ System.out.println$()$;

$$ showContents$($file$)$;

$\}$

$\}$

private static void showContents$($File f$)\{$

$//$ your code here to display file

$\}$

This code snippet brings up a File Selection dialog box that starts in the USER$-$HOME directory.$$ On windows, this will be c:$\backslash$users$\backslash$USER$\backslash$documents$.$ The if$-$statement checks to see if a file was selected, and if so$,$ then calls a method named showContents $($that you will need to write$)$ and pass in the selected File object.$$ You will need to write this method to show the contents of the file.$$ This file can any type of file $--$ text or non text.$$

As mentioned earlier, you will use a FileInputStream to read bytes from the selected file.$$ Your version of the showContents$()$ method will read $10$ bytes at a time, and display the hexadecimal $($remember this number system from COP$1000)$ representation of the byte, and the ASCII character, if it is a letter or digit.$$ If it is not a letter or a digit, then just print a period $".".$ You should display the $10$ bytes in hex first, then the ASCII charatter.$$ For readability, put spacing between the hex and the ASCII.$$ A example of printing the first $4$ lines of a file is shown below:

$7$c $317$c $0$d $0$a $44756$d $626$c $\mathrm{.}1...$Dumbl

$65646$f $72657$c $416$c $6275$edore$.$Albu

$737$c $486$f $677761727473$s$.$Hogwarts

$7$c $454$e $477$c $77616$e $647$c $.$ENG.wand.

There are many ways to get the hex representation of a number, and our text shows you one way with a wrapper class $($Integer$.$toHexString$).$ You can use this if you want, but there's a simpler way $--$ use the format specifier $\text{'}$x$\text{'}.$ For example, you can do something like this:$$ String.format$("\%02$x $",$ some$\_$byte$).$ This will take a byte, and provide a $2$ digit hex representation of it$.$ The $\text{'}0\text{'}$ in the format specifier states that if the hex value is one digit, then left pad it with a $\text{'}0\text{'}.$ So$,$ a byte value of $15$ will be $0$F$,$ not F$.$