我正在为学校做一个程序，要求我在名人堂上添加/删除/编辑/搜索乐队，用户可以使用这些程序添加乐队。我无法在 arraylist 中获取乐队的索引hallOfFame。有人可以推荐任何解决方案吗？
这是我的HallofFame课：
import java.util.*;
public class HallofFame
{
public static ArrayList<Band> hallOfFame = new ArrayList<Band>();
public static Scanner scan = new Scanner(System.in);
public static void main(String[]args){
boolean running = true;
while(running == true){
System.out.println("What would you like to do?");
System.out.println("");
System.out.println("1. Add");
System.out.println("2. Remove");
System.out.println("3. Edit");
System.out.println("4. Clear");
System.out.println("5. Search");
System.out.println("6. Quit");
System.out.println("");
String choice = scan.nextLine();
if(choice.equals ("1")){
add();
}
else if(choice.equals ("2")){
remove();
}
else if(choice.equals ("3")){
edit();
}
else if(choice.equals ("4")){
clear();
}
else if(choice.equals ("5")){
search();
}
else if(choice.equals ("6")){
running = false;
}
}
}
public static void add(){
Scanner booblean = new Scanner(System.in);
System.out.println("What is the name of the band you would like to add?");
String name = scan.nextLine();
System.out.println("What kind of genre is this band?");
String genre = scan.nextLine();
System.out.println("How many members are in the band?");
int numMem = scan.nextInt();
System.out.println("How many songs does this band have?");
int numSongs = scan.nextInt();
System.out.println("How many albums does this band have?");
int numAlbs = scan.nextInt();
System.out.println("Is this band currently active?");
String yesno = booblean.nextLine();
boolean isActive = false;
if(yesno.equalsIgnoreCase ("yes")){
isActive = true;
}
Band b1 = new Band(name, genre, numMem, numSongs, numAlbs, isActive);
hallOfFame.add(b1);
System.out.println("");
System.out.println("The band " + name + " has been added to the database.");
System.out.println("");
}
public static void remove(){
}
public static void edit(){
System.out.println("What band info do you want to edit?");
String editband = scan.nextLine();
}
public static void search(){
System.out.println("What band are you looking for?");
String searchband = scan.nextLine();
}
public static void clear(){
hallOfFame.clear();
}
}
这是类的代码Band：
public class Band
{
//1.Class Variables
private String nameOfBand;
private String[] members;
private String genre;
private int numberOfMembers;
private int numberOfSongs;
private int numberOfAlbums;
private boolean isActive;
//2. Constructors
public Band(String name, String genre, int numMem, int numSongs, int numAlbs, boolean isActive)
{
}
//3. Methods
//setters
public void setName(String newName)
{
nameOfBand = newName;
}
public void setGenre(String s)
{
genre = s;
}
public void setNumberOfMembers(int num)
{
numberOfMembers = num;
}
public void setNumberOfSongs(int numsongs){
numberOfSongs = numsongs;
}
public void setNumberOfAlbums(int numalbs){
numberOfAlbums = numalbs;
}
public void setIsActive(boolean isactive){
isActive = isactive;
}
public String getName()
{
return nameOfBand;
}
public String getGenre(){
return genre;
}
public int getNumberofMembers(){
return numberOfMembers;
}
public int getNumberofSongs(){
return numberOfSongs;
}
public int getNumberofAlbums(){
return numberOfAlbums;
}
public boolean getIsActive(){
return isActive;
}
@Override public String toString()
{
String output = "";
output += "Name: " + nameOfBand + "\n";
output += "Genre: " + genre + "\n";
output += "Number of members: " + numberOfMembers + "\n";
output += "Number of songs: " + numberOfSongs + "\n";
output += "Number of albums: " + numberOfAlbums + "\n";
output += "Is this band active: " + isActive + "\n";
return output;
}
}