In Java, which I$\text{'}$m learning simultaneously and need help, please.

Assignment: Sets can be combined in different ways to define new sets. The intersection of set A and set B$,$ denoted Aand read "A intersect B$",$ is the set of all elements that are elements of both A and B$.$ The union of two sets, A and B$,$ denoted A

and read "A union B$",$ is the set of all elements that are elements of A or B$.$

Example input $($the program should prompt the user to input the below values $-$ these are example values only$)$:

Enter four INTEGER elements in Set A$,$ each separated by a space: $1234$

Enter four INTEGER elements in Set B$,$ each separated by a space: $3456$

Corresponding output:

Set A $=[1,2,3,4]$

Set B $=[3,4,5,6]$

Intersection of Set A and Set B $=[3,4]$

Union of Set A and Set B $=[1,2,3,4,5,6]$

Another example:

Enter four INTEGER elements in Set A$,$ each separated by a space: $1234$

Enter four INTEGER elements in Set B$,$ each separated by a space: $6789$

Corresponding output:

Set A $=[1,2,3,4]$

Set B $=[6,7,8,9]$

Intersection of Set A and Set B $=[]$

Union of Set A and Set B $=[1,2,3,4,6,7,8,9]$

Below is what I have so far. I can get the sets to print, but don't know how to do it so that each set prints as a whole and not one input at a time, that alternates between setA and setB.

import java.util.Scanner;

import java.util.$*$;

public class Sets $\{$

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

$//$ declare variables for user input:

$//$ TYPE YOUR CODE HERE $>$

int i;

int sA$,$ sB;

int setAInput, setBInput;

$//$ define setA and setB:

HashSet setA $=$ new HashSet$()$;

HashSet setB $=$ new HashSet$()$;

$//$ enter $4$ integers into setA:

Scanner inputMachine $=$ new Scanner$($System$.$in$)$;

System.out.print$("$Enter four INTEGER elements for Set A$,$ each separated by a $"+$

"space: $")$;

for $($i $=0$; i $<4$; $++$i$)\{//$ allow only $4$ integers; requires exactly $4$ integers

setAInput $=$ inputMachine.nextInt$()$;

sA $=$ setAInput;

setA.add$($sA$)$;

$\}$

$//$ enter $4$ integers into setB:

System.out.print$("$Enter four INTEGER elements for Set B$,$ each separated by a $"+$

"space: $")$;

$//<$ TYPE YOUR CODE HERE, similar to setA above $>$

for $($i $=0$; i $<4$; $++$i$)\{//$ again, only $4$ integers, exactly $4$ integers

setBInput $=$ inputMachine.nextInt$()$;

sB $=$ setBInput;

setB.add$($sB$)$;

$//$ print contents of sets A and B:

System.out.println $("$Set A: $"+$ setA$)$;

System.out.println $("$Set A: $"+$ setA$)$;

$//$ create copy of setA to retain its structure $($use your own variable names$)$:

HashSet intersectionOfSets $=$ new HashSet$($setA$)$;

HashSet unionOfSets $=$ new HashSet$($setA$)$;

intersectionOfSets $.$retainAll$($setB$)$; $//$ find intersection of sets A and B

$//<$ TYPE YOUR CODE HERE $($PRINT THE INTERSECTION, which is intersectionOfSets$)>$

unionOfSets.addAll$($setB$)$; $//$ find union of sets A and B

$//<$ TYPE YOUR CODE HERE $($PRINT THE UNION, which is unionOfSets$)$

$\}$

$\}$

$\}$