How do I create a numeric-only JTextfield?

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Index:Java 2 Standard Edition (J2SE):Java 2 JDK:Swing (javax.swing.*):Atomic Controls (JButton, JCheckBox, JRadioButton, JComboBox, JList, JMenu, JSlider, JTextField):JTextField, JPasswordField, JFormattedTextField (1.4)

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How do I create a numeric-only JTextfield?

Here's the code for a Swing component that only accepts digits.

Main.java:

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Further Information

Author of answer: Joris Van den Bogaert

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