simpleftf.java

java swing 开发代码

// SimpleFTF.java
// A quick demonstration of JFormattedTextField.
//
package	jswing.ch20;

import javax.swing.*;

public class SimpleFTF extends JPanel {

  public SimpleFTF() {
    JFormattedTextField ftf[] = new JFormattedTextField[7];
    String des[] = new String[ftf.length]; // description of each field

    des[0] = "Date";    
    ftf[0] = new JFormattedTextField(new java.util.Date());

    des[1] = "Integer"; 
    ftf[1] = new JFormattedTextField(new Integer(90032221));

    des[2] = "Float";
    ftf[2] = new JFormattedTextField(new Float(3.14));
    
    des[3] = "Float work-around"; // manually specify a NumberFormat
    ftf[3] = new JFormattedTextField(java.text.NumberFormat.getInstance());
    ftf[3].setValue(new Float(3.14));

    des[4] = "currency";
    ftf[4] =
      new JFormattedTextField(java.text.NumberFormat.getCurrencyInstance());
    ftf[4].setValue(new Float(5.99));

    des[5] = "percent";
    ftf[5] =
      new JFormattedTextField(java.text.NumberFormat.getPercentInstance());
    ftf[5].setValue(new Float(0.33));

    des[6] = "java.net.URL"; // works via 1-arg String constructor and toString()
    java.net.URL u = null;
    try {
       u = new java.net.URL("http://www.ora.com/");
    } catch (java.net.MalformedURLException ignored) { }
    ftf[6] = new JFormattedTextField(u);
    ftf[6].setColumns(24);

    // add each ftf[] to a BoxLayout
    setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
    for (int j=0; j < ftf.length; j+=1) {
      JPanel borderPanel = new JPanel(new java.awt.BorderLayout());
      borderPanel.setBorder(new javax.swing.border.TitledBorder(des[j]));
      borderPanel.add(ftf[j], java.awt.BorderLayout.CENTER);
      add(borderPanel);
    }
  }

  public static void main(String argv[]) {

    if (argv.length > 0) { // change to command-line locale
      if (argv[0].equalsIgnoreCase("canada"))
        java.util.Locale.setDefault(java.util.Locale.CANADA);
      if (argv[0].equalsIgnoreCase("canada_french"))
        java.util.Locale.setDefault(java.util.Locale.CANADA_FRENCH);
      if (argv[0].equalsIgnoreCase("china"))
        java.util.Locale.setDefault(java.util.Locale.CHINA);
      if (argv[0].equalsIgnoreCase("france"))
        java.util.Locale.setDefault(java.util.Locale.FRANCE);
      if (argv[0].equalsIgnoreCase("germany"))
        java.util.Locale.setDefault(java.util.Locale.GERMANY);
      if (argv[0].equalsIgnoreCase("italy"))
        java.util.Locale.setDefault(java.util.Locale.ITALY);
      if (argv[0].equalsIgnoreCase("japan"))
        java.util.Locale.setDefault(java.util.Locale.JAPAN);
      if (argv[0].equalsIgnoreCase("korea"))
        java.util.Locale.setDefault(java.util.Locale.KOREA);
      if (argv[0].equalsIgnoreCase("prc"))
        java.util.Locale.setDefault(java.util.Locale.PRC);
      if (argv[0].equalsIgnoreCase("taiwan"))
        java.util.Locale.setDefault(java.util.Locale.TAIWAN);
      if (argv[0].equalsIgnoreCase("uk"))
        java.util.Locale.setDefault(java.util.Locale.UK);
      if (argv[0].equalsIgnoreCase("us"))
        java.util.Locale.setDefault(java.util.Locale.US);
    }

    String localeString = java.util.Locale.getDefault().getDisplayName();
    JFrame f = new JFrame("SimpleFTF " + localeString);
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setContentPane(new SimpleFTF());
    f.pack();
    f.setVisible(true);
  }
}