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How to extract an icon from a file. Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
Extract an icon from a file 06-Aug-04
Category
Files Operation
Language
JBuilder All Versions
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Publisher:
Darley, F. Joe
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			1   
2   package samplecode;
3   
4   import java.awt.*;
5   import java.awt.event.*;
6   import javax.swing.*;
7   import java.io.File;
8   
9   
10  /**
11   * <p>Title: Extract icon </p>
12   * <p>Description: This program shows how to extract a file icon </p>
13   *  and display it on a label component.
14   * <p>Company: Developer's super Page.com</p>
15   */
16  
17  
18  public class SampleFrame extends JFrame {
19    JPanel contentPane;
20    BorderLayout borderLayout1 = new BorderLayout();
21    JPanel jpnlMain = new JPanel();
22    JButton jButton1 = new JButton();
23    JLabel jLabel1 = new JLabel();
24  
25    //Construct the frame
26    public SampleFrame() {
27      enableEvents(AWTEvent.WINDOW_EVENT_MASK);
28      try {
29        jbInit();
30      }
31      catch(Exception e) {
32        e.printStackTrace();
33      }
34    }
35  
36    //Component initialization
37    private void jbInit() throws Exception  {
38      contentPane = (JPanel) this.getContentPane();
39      contentPane.setLayout(borderLayout1);
40      this.setSize(new Dimension(400, 300));
41      this.setTitle("Extract Icon");
42      this.addHierarchyBoundsListener(new 
43  SampleFrame_this_hierarchyBoundsAdapter(this));
44      jpnlMain.setLayout(null);
45      contentPane.setMinimumSize(new Dimension(300, 300));
46      contentPane.setPreferredSize(new Dimension(300, 256));
47      jpnlMain.setDebugGraphicsOptions(0);
48      jpnlMain.setMinimumSize(new Dimension(400, 256));
49      jpnlMain.setPreferredSize(new Dimension(400, 256));
50      jButton1.setBounds(new Rectangle(149, 140, 88, 50));
51      jButton1.setText("jButton1");
52      jButton1.addActionListener(new SampleFrame_jButton1_actionAdapter(this));
53      jLabel1.setText("jLabel1");
54      jLabel1.setBounds(new Rectangle(145, 65, 116, 44));
55      contentPane.add(jpnlMain, BorderLayout.CENTER);
56      jpnlMain.add(jButton1, null);
57      jpnlMain.add(jLabel1, null);
58    }
59  
60    //Overridden so we can exit when window is closed
61    protected void processWindowEvent(WindowEvent e) {
62      super.processWindowEvent(e);
63      if (e.getID() == WindowEvent.WINDOW_CLOSING) {
64        System.exit(0);
65      }
66    }
67  
68  
69    void jButton1_actionPerformed(ActionEvent e) {
70      //this function extract an icon from a file and sets it to a label
71      JFileChooser chooser = new JFileChooser();
72         // Create a File instance of the file
73          File file = new File("c:\\test.txt");    
74          // Get the icon
75          Icon icon = chooser.getIcon(file);
76           // Some sample code to display the icon in a window
77          jLabel1.setIcon(icon);
78          //set the name of the file to the text of the label component
79          jLabel1.setText(file.getName());
80  
81    }
82  
83  }
84  
85  class SampleFrame_this_hierarchyBoundsAdapter extends 
86  java.awt.event.HierarchyBoundsAdapter {
87    SampleFrame adaptee;
88  
89    SampleFrame_this_hierarchyBoundsAdapter(SampleFrame adaptee) {
90      this.adaptee = adaptee;
91    }
92  
93  }
94  
95  class SampleFrame_jButton1_actionAdapter implements java.awt.event.ActionListener {
96    SampleFrame adaptee;
97  
98    SampleFrame_jButton1_actionAdapter(SampleFrame adaptee) {
99      this.adaptee = adaptee;
100   }
101   public void actionPerformed(ActionEvent e) {
102     adaptee.jButton1_actionPerformed(e);
103   }
104 }
105 


			
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