Thread: problem using ArrayList

import java.util.*;
import javax.swing.JOptionPane;
public class DotComTestDrive 
       {
         public static void main(String[] args)
              {
	            int numOfGuesses = 0;
                    DotCom dot = new DotCom();
                    int random = (int)(Math.random() * 5);
		    int[] locations = {random,random + 1,random + 2};
	            dot.setLocationCells(locations);
		    boolean isAlive = true;
 
                    while(isAlive == true)
                        {
               			String guess = JOptionPane.showInputDialog(null,"Enter the Number");
               			String result = dot.checkGuess(guess);
        		}
        	}
 
       }
 
         public class DotCom 
          {
                private ArrayList<String> locationCells;
 
               	public void setLocationCells(ArrayList<String> loc)
             {
               		locationCells = loc;
       	     }
 
             public String checkGuess(String userInput)
             {
        		String result = "miss";
		        int index = locationCells.indexOf(userInput);
 
                        if(index >= 0)
                       {
        			locationCells.remove(index);
			        if(locationCells.isEmpty())
                                {
			        	result = "kill";
         			}
		       else result = "hit";
 
		       }
		return result;
           }
}

What exactly is the problem?

Can you fix your code tags?

Until you fix your code tags it's going to be pretty hard to read your code.

But the error says it all: the method takes an ArrayList, and you're passing in an array. That's not going to work.

BB Code List - Java Programming Forums - The Java Community

Well, like I said, the method takes an ArrayList, and you're passing in an array. Which do you want to do: pass in an array, or accept an ArrayList? It's up to you which one is correct.

Then post an updated MCVE and ask a specific question, and we'll go from there.