How do I add a String to a String array in Java?

Question

I have a string that I have generated, and I need to add it to a String[] that I created before I generated the string. I tried this:

String[] operators = {};
string generatedString = /*generating string from JTextField values*/;
operators.append(generatedString);

And this:

String[] operators = {};
string generatedString = /*generating string from JTextField values*/;
append(operators, generatedString);

And this:

String[] operators = {};
string generatedString = /*generating string from JTextField values*/;
operators.add(generatedString);

But all of them show syntax errors. I feel like there should be a simple solution that I'm missing, but I can't find it.

Answer 1

Arrays in Java are of fixed size. You can use ArrayList:

ArrayList< String > str = new ArrayList< String >(); Then to change the list you use str.add(value).

You can see how to iterate through ArrayList here: http://googleweblight.com/?lite_url=http://tutorialswithexamples.com/java-arraylist-iterator-example/&ei=s6HaARD2&lc=en-IN&s=1&m=397&host=www.google.co.in&ts=1456544389&sig=ALL1Aj5nVY9uHxdh2RrQqin8ymdO3su14w

Answer 2

What you need is an ArrayList. Java array is size-fixed.

ArrayList<String> operators = new ArrayList<String>();
string generatedString = /*generating string from JTextField values*/;
operators.add(generatedString);