Example usage for javax.swing JFrame JFrame

Introduction

In this page you can find the example usage for javax.swing JFrame JFrame.

Prototype

public JFrame(String title) throws HeadlessException

Source Link

Document

Creates a new, initially invisible Frame with the specified title.

Usage

From source file:MainClass.java

public static void main(String args[]) {
    JFrame frame = new JFrame("Verifier Sample");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JTextField textField1 = new JTextField();
    JTextField textField2 = new JTextField();
    JTextField textField3 = new JTextField();

    InputVerifier verifier = new InputVerifier() {
        public boolean verify(JComponent comp) {
            boolean returnValue;
            JTextField textField = (JTextField) comp;
            try {
                Integer.parseInt(textField.getText());
                returnValue = true;// www.j  a  v a 2s  .com
            } catch (NumberFormatException e) {
                returnValue = false;
            }
            return returnValue;
        }
    };

    textField1.setInputVerifier(verifier);
    textField3.setInputVerifier(verifier);

    frame.add(textField1, BorderLayout.NORTH);
    frame.add(textField2, BorderLayout.CENTER);
    frame.add(textField3, BorderLayout.SOUTH);
    frame.setSize(300, 100);
    frame.setVisible(true);
}