Purpose: JComboBox to list down ages that a user can select
I realize that I need an array of integers. What part of the Math functions in Java will allow me to easily do that? The list of numbers will be from 1-100 in sequential order.
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4 Answers
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I don't quite understand why you need the Math functions.
This would work:
List<Integer> age = new ArrayList<Integer>();
for (int i = 1; i <= 100; ++i) {
age.add(i);
}
JComboBox ageComboBox = new JComboBox(age.toArray());
Robin
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Adel Boutros
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Putting that in, I get an error. Syntax error on token "int", Dimensions expected after this token. What does this mean? – Maydayfluffy Feb 19 '12 at 00:01
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@Maydayfluffy on which line did you get the error, maybe you're using the code incorrectly? – Adel Boutros Feb 19 '12 at 01:29
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The problem with this code is List
. It should be List – Robin Feb 19 '12 at 12:00. Same for ArrayList . I edited the answer to remove the compile errors
3
You don't need any math functions. Look up JComboBox in the java docs and you'll find a .addItem function. It can take a String (e.g. "1") or a Number (e.g. new Integer(1)). Just iterate in a for-loop and add the items you need.
Tony
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I suspect a JSpinner using a SpinnerNumberModel would be a better component for selecting an integer based age or Y.O.B. See How to Use Spinners in the tutorial for more info.
Andrew Thompson
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