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📄 comboboxesframe.html

📁 java编程思想第3版原代码分享是java编程思想一本好书,大家多多学习
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<html><head><title>Display page for ComboBoxes at www.BruceEckel.com</title></head>
<FONT FACE="Verdana,Tahoma,Arial,Helvetica,Sans" SIZE="-1">
<FONT FACE="Verdana,Tahoma,Arial,Helvetica,Sans"><H2>ComboBoxes.java</H2><hr></FONT>
<!--"CONVERTED_APPLET"-->
<!-- HTML CONVERTER -->
<OBJECT 
    classid = "clsid:CAFEEFAC-0014-0001-0001-ABCDEFFEDCBA"
    codebase = "http://java.sun.com/products/plugin/autodl/jinstall-1_4_1_01-windows-i586.cab#Version=1,4,1,1"
    WIDTH = "200" HEIGHT = "125" ALIGN = "baseline" >
    <PARAM NAME = CODE VALUE = "ComboBoxes.class" >
    <PARAM NAME = "type" VALUE = "application/x-java-applet;jpi-version=1.4.1_01">
    <PARAM NAME = "scriptable" VALUE = "false">

    <COMMENT>
	<EMBED 
            type = "application/x-java-applet;jpi-version=1.4.1_01" 
            CODE = "ComboBoxes.class"
            WIDTH = "200"
            HEIGHT = "125"
            ALIGN = "baseline"  
	    scriptable = false 
	    pluginspage = "http://java.sun.com/products/plugin/index.html#download">
	    <NOEMBED>
            
            </NOEMBED>
	</EMBED>
    </COMMENT>
</OBJECT>

<!--
<APPLET CODE = "ComboBoxes.class" WIDTH = "200" HEIGHT = "125" ALIGN = "baseline">


</APPLET>
-->


<!--"END_CONVERTED_APPLET"-->

<FONT SIZE="+3"><PRE><B>
//: c14:ComboBoxes.java
// Using drop-down lists.
// &lt;applet code=ComboBoxes width=200 height=125&gt;&lt;/applet&gt;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import com.bruceeckel.swing.*;

public class ComboBoxes extends JApplet {
  private String[] description = {
    "Ebullient", "Obtuse", "Recalcitrant", "Brilliant",
    "Somnescent", "Timorous", "Florid", "Putrescent"
  };
  private JTextField t = new JTextField(15);
  private JComboBox c = new JComboBox();
  private JButton b = new JButton("Add items");
  private int count = 0;
  public void init() {
    for(int i = 0; i &lt; 4; i++)
      c.addItem(description[count++]);
    t.setEditable(false);
    b.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        if(count &lt; description.length)
          c.addItem(description[count++]);
      }
    });
    c.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        t.setText("index: "+ c.getSelectedIndex() + "   " +
         ((JComboBox)e.getSource()).getSelectedItem());
      }
    });
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    cp.add(t);
    cp.add(c);
    cp.add(b);
  }
  public static void main(String[] args) {
    Console.run(new ComboBoxes(), 200, 125);
  }
} ///:~
</B></PRE></FONT>
</html>

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