user2904400 user2904400 - 1 year ago 69
Java Question

Update ArrayList by passing argument in Java

I am trying to up create and update an

by passing an argument, so that I will end up with a list of say 10 names; however, the current function doesn't seem to be working - any ideas pls?

public String addClient(String name) {
ArrayList<String> myList = new ArrayList<String>();

return myList;

Answer Source

This is what you need to do:

ArrayList<String> myList = new ArrayList<String>();

public void addClient(String name) {

If you create a list inside the method, it will only have one value, and will go away once method execution finishes (unless it's returned). Have a look at different scopes here. You should create a list at a class level and add the elements into it.

Also, method does not need to return anything, so it's better to change the type to void.

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