java Modification error

Question

I want to loop through an arraylist to see wheather the p.name(Player name) is equal to what ever the user type in a text-box; when I enter a value it work for the first name but when I change the value in the text-box it throw a concurrent modification error.

Company class

 public class Company {

  int shares = 100;
  ArrayList <Player> shareHolders = new ArrayList<>();

  if (condition()) {
    for (Player p: company.shareHolders) { // error highlight this line
            if (p.name.equalsIgnoreCase(txtname.getText()) && 
                    (company.shares <= 100 && company.shares >0)) {

                    company.shares -= Integer.parseInt(txtShares.getText());
                    p.shares += Integer.parseInt(txtShares.getText());
                    System.out.println(p.name+":"+p.shares+" | Company"+company.shares);
                    return;
                }else{
                    company.shareHolders.add(new Player(txtname.getText()));
                    System.out.println(txtname.getText()+" added");
                }
            }
        }

JacobG, I found the answer to it. really appreciate your help — , Feb 28 '18 at 16:56
can I use something like this: for (Player p: new ArrayList(company.shareHolders)) { — , Feb 28 '18 at 16:57

score 0 · Answer 1 · answered Feb 28 '18 at 16:46

0

You are modifying company.shareHolders during an iteration over it, which is not allowed (hence the ConcurrentModificationException).

answered Feb 28 '18 at 16:46

alephtwo

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any clue on how to get over this problem – Feb 28 '18 at 16:47

java Modification error

1 Answers1