Thread: Deleting Array Records

Hi, I have a problem that when you delete an array record between some numbers the rest will be deleted.

For Example

I'm only going to delete booknum[6] -- then the booknum[7] booknum[8] booknum[9] and so on.. will be deleted

Any solution how to adjust booknum[7] into booknum[6], booknum[8] into booknum[7] and so on


System.out.print("Please Enter the Book Number you want to Destroy: ");
a6=Integer.parseInt(br.readLine());

if(booknum[a6] != null && booknum[a6] != ""){
if(bookstatus[a6].equals("Available")){
System.out.println("Book "+ bookname[a6] + " is Eliminated");
booknum[a6]=null;
bookname[a6]=null;
bookdesc[a6]=null;
bookstatus[a6]=null;

Here is the snippet code

 
 
	do{
	System.out.println("----");
	System.out.println("Deleting Books to the Record");
 
 
	c6=0;
	System.out.println("Please Choose a Book Below");							
	System.out.println("Book Number // Book Name // Book Description");
 
	if(booknum[1] == null)
{
	System.out.println("Empty Record");
	c6++;
}
        else
{
	for (int i6 = 0; i6 < booknum.length; i6++){
	 if(booknum[i6] != null && booknum[i6] != "")
  {
		if(bookstatus[i6].equals("Available"))
        {
		System.out.println(booknum[i6]+" \t\t "+bookname[i6]+" \t\t "+bookdesc[i6]);
									c6++;
									}
									}
}
 
		if(c6==0){
		System.out.println("No Books are Currently Available for Deleting");
		}else{
		System.out.print("Please Enter the Book Number you want to Destroy: ");
		a6=Integer.parseInt(br.readLine());
 
		if(booknum[a6] != null && booknum[a6] != ""){
		if(bookstatus[a6].equals("Available")){
		System.out.println("Book "+ bookname[a6] + " is Eliminated");	
							booknum[a6]=null;
								bookname[a6]=null;
								bookdesc[a6]=null;
								bookstatus[a6]=null;
							}
							}else{
							System.out.println("Book is not yet available");
							}
							}

Thanks in advance for any help

Why don't you just use an ArrayList? If this is for homework, all I can really say is to run this through a debugger (or at the very least, add some print statements) to get a better idea of what the code is actually doing.

Sounds like a job for an ArrayList.

Other than that, I'd recommend you split this up- write a method that takes an array and an index as arguments and deletes that index. Then you can post that as an SSCCE if you get stuck.