Ok thank you for that explanations, but now I have an issue with my code. My remove function doesn't see to be working. Now I think it has to do with the fact it is not setting that CDs information back to empty or 0. Also it only stores 1 cd informations, even if i enter a second 1 cd with different information.
import java.util.Scanner;
public class TestMusicDB {
/**
* @author Alexander Chamerlaion
* @Version 1.0
* @Date 10/5/11
* This program creates a DB and stores values in it
*
*
*/
public static void main(String[] args) {
System.out.println("Music Database");
Scanner input = new Scanner(System.in);
String in;
System.out.println("How many CDs would you like to enter: ");
int numCD=input.nextInt();
MusicDB mydb= new MusicDB(numCD);
while(true){
System.out.println("Welcome to your personal music database. " +
"The legal commands are \nq for quit\nd for display\nf for find\na for add\nr for remove");
System.out.println("What is your command");
in=input.nextLine();
in.toLowerCase();
if (in.equals("d")){
mydb.display();
}
else if(in.equals("f")){
System.out.println("Please enter the title of the CD you would like to search for: ");
String search = input.nextLine();
search.toLowerCase();
mydb.find(search);
}
else if(in.equals("a")){
System.out.println("Please enter title of CD: ");
String cdName = input.nextLine();
System.out.println("Please enter artist name: ");
String artistName = input.nextLine();
System.out.println("Please enter total track number: ");
int tnum = 0;
tnum = input.nextInt();
System.out.println("Please enter copyright year: ");
int year = 0;
year = input.nextInt();
MusicCD newCD = new MusicCD(cdName, artistName,tnum,year);
mydb.add(newCD);
}
else if(in.equals("r")){
System.out.println("Please enter the title of the album you want to remove (must be how you entered it) ");
String remove = input.nextLine();
mydb.remove(remove);
}
else if(in.equals("q")){
System.out.println("Goodbye.");
break;
}
}
}
}import java.util.Scanner;
public class MusicCD {
private String cd;
private String artist;
private int tracknum;
private int cright;
public MusicCD(String cdName, String artistName, int tnum, int year){
cd=cdName;
artist=artistName;
tracknum=tnum;
cright=year;
}
public String getCD(){
return cd;
}
public void setCD(String cdName){
this.cd=cd;
}
public String getArtist(){
return artist;
}
public void setArtist(String artistName){
this.artist=artist;
}
public int getTracknum(){
return tracknum;
}
public void setTracknum(int tnum){
}
public int getCright(){
return cright;
}
public void setCright(int year){
this.cright=cright;
}
public String toString(int i){
return "\nCD Title: " + cd + " \nArtist: " + artist + " \nTotal Track Number: "+tracknum+" \nCopyright Year: "+cright;
}
}public class MusicDB {
private MusicCD[] numofcd;
private int count;
public int length;
int numCD=0;
public MusicDB(int numCD){
numofcd = new MusicCD[numCD];
length = numCD;
count = 0;
}
public void add(MusicCD cd){
if(count < length){
numofcd[count] = cd;
count++;
}
else{
System.out.println("Your database is full");
}
}
public void display(){
for(int i = 0; i<count; i++){
System.out.println(numofcd[numCD].toString(numCD));
}
}
public void find (String search){
boolean found = false;
for (MusicCD cds : numofcd ) {
if (search.equals(cds.getCD())) {
found = true;
System.out.println("Your search was found ");
break;
}
else{
System.out.println("Your search could not be found try again ");
}
}
}
public void remove(String search){
boolean found = false;
for (MusicCD cds : numofcd ) {
if (search.equals(cds.getCD())) {
found = true;
System.out.println("Your search was found ");
cds.setCD("");
cds.setArtist("");
cds.setTracknum(0);
cds.setCright(0);
break;
}
else{
System.out.println("Your search could not be found try again ");
}
}
}
}