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POHow to get the same value as the user is seeing from a JFormattedTextField?
 

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  1. POHow to get the same value as the user is seeing from a JFormattedTextField?
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    <p>I'm using a <code>NumberFormatter</code> and <code>JFormattedTextField</code>, but the <code>.getValue()</code> doesn't return the same value as the user is seeing.</p> <p>I think the input-string is parsed using NumberFormats parse-method, and I get the Numberformat from <code>NumberFormat.getNumberInstance();</code> with the actual Locale. So I don't think I easily can extend it and write my own parse-method?</p> <p><b>In example</b>, if the user types <code>1234.487</code> the <code>getValue()</code> will return: <code>1234.487</code> but the user will be displayed <code>1,234.49</code></p> <p><b>Another example</b>, using <code>NumberFormat.getCurrencyInstance();</code>. The user types <code>1234.487</code> and the <code>getValue()</code> will return <code>1234.487</code> but the user will be displayed <code>$1,234.49</code></p> <p><b>Instead</b>, I want an ParseException be generated if the Formatter can't format the value without rounding. Same thing if the user types <code>4.35b6</code>, by default the formatter will display <code>4.35</code> and the value will be <code>4.35</code>, but I want a ParseException, because the user typed in an <b>invalid</b> value.</p> <p>Here is the code that I have tried with:</p> <pre><code>NumberFormat nf = NumberFormat.getNumberInstance(); nf.setMaximumFractionDigits(2); nf.setMinimumFractionDigits(2); final JFormattedTextField ftf = new JFormattedTextField(nf); ftf.setValue(new BigDecimal("1234.50")); // Print the value from ftf final JTextField txt = new JTextField(12); txt.addFocusListener(new FocusAdapter() { public void focusGained(FocusEvent e) { txt.setText(ftf.getValue().toString()); } }); </code></pre> <p><b>How to get the same value as the user is seeing?</b></p>
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    1. COThis question is related, and will improve the solution: http://stackoverflow.com/questions/1680120/javas-decimalformat-how-to-reject-invalid-input-with-grouped-decimals
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