1   package samplecode;
2   
3   import java.awt.*;
4   import java.awt.event.*;
5   import javax.swing.*;
6   import java.util.jar.*;
7   import java.io.*;
8   import java.util.*;
9   
10  /**
11   * <p>Title: Font Names </p>
12   * <p>Description: This program shows how to read attirbutes from a jar file</p>
13   * <p>Company: Developer's super Page.com</p>
14   */
15  
16  
17  public class SampleFrame extends JFrame {
18    JPanel contentPane;
19    BorderLayout borderLayout1 = new BorderLayout();
20    JPanel jpnlMain = new JPanel();
21    DefaultListModel model = new DefaultListModel();
22    JLabel jLabel1 = new JLabel();
23    JButton jButton2 = new JButton();
24    JTextArea jTextArea1 = new JTextArea();
25    JTextField jTextField1 = new JTextField();
26    JLabel jLabel2 = new JLabel();
27    JTextField jTextField2 = new JTextField();
28  
29    //Construct the frame
30    public SampleFrame() {
31      enableEvents(AWTEvent.WINDOW_EVENT_MASK);
32      try {
33        jbInit();
34      }
35      catch(Exception e) {
36        e.printStackTrace();
37      }
38    }
39  
40    //Component initialization
41    private void jbInit() throws Exception  {
42      contentPane = (JPanel) this.getContentPane();
43      contentPane.setLayout(borderLayout1);
44      this.setSize(new Dimension(475, 300));
45      this.setTitle("Jar File Entry Reader");
46      this.addHierarchyBoundsListener(new 
47  SampleFrame_this_hierarchyBoundsAdapter(this));
48      jpnlMain.setLayout(null);
49      contentPane.setMinimumSize(new Dimension(300, 300));
50      contentPane.setPreferredSize(new Dimension(300, 256));
51      jpnlMain.setDebugGraphicsOptions(0);
52      jpnlMain.setMinimumSize(new Dimension(400, 256));
53      jpnlMain.setPreferredSize(new Dimension(400, 256));
54      jpnlMain.addKeyListener(new SampleFrame_jpnlMain_keyAdapter(this));
55      jButton2.setBounds(new Rectangle(162, 232, 148, 34));
56      jButton2.setText("GetInfo");
57      jButton2.addActionListener(new SampleFrame_jButton2_actionAdapter(this));
58      jTextArea1.setText("jTextArea1");
59      jTextArea1.setBounds(new Rectangle(11, 8, 457, 176));
60      jLabel2.setText("File Name:");
61      jLabel2.setBounds(new Rectangle(33, 201, 55, 19));
62      jTextField2.setFont(new java.awt.Font("Dialog", 1, 11));
63      jTextField2.setText("jTextField2");
64      jTextField2.setBounds(new Rectangle(169, 195, 129, 28));
65      contentPane.add(jpnlMain, BorderLayout.CENTER);
66      jpnlMain.add(jTextArea1, null);
67      jpnlMain.add(jLabel2, null);
68      jpnlMain.add(jTextField2, null);
69      jpnlMain.add(jButton2, null);
70  
71    }
72  
73    //Overridden so we can exit when window is closed
74    protected void processWindowEvent(WindowEvent e) {
75      super.processWindowEvent(e);
76      if (e.getID() == WindowEvent.WINDOW_CLOSING) {
77        System.exit(0);
78      }
79    }
80  
81  
82    void jButton1_actionPerformed(ActionEvent e) {
83  
84  
85    }
86  
87    void jButton2_actionPerformed(ActionEvent e) {
88      try {
89           // used to append data in the for loop
90             String sData ="";
91  
92             // Open the JAR file give by the textfield
93            JarFile jarfile = new JarFile(jTextField2.getText());
94  
95  
96             // Get the manifest
97             Manifest manifest = jarfile.getManifest();
98     
99             // Get the manifest entries
100            Map map = manifest.getEntries();
101    
102            // Enumerate each entry
103            for (Iterator it=map.keySet().iterator(); it.hasNext(); ) {
104              
105                // Get the name of a file in the Jar Manifest
106                String fileName = (String)it.next();
107               
108              sData+=fileName + "\n";            
109            }
110            
111             jTextArea1.setText(sData);
112        } catch (IOException e1) {
113        }
114 
115   }
116 
117 }
118 class SampleFrame_this_hierarchyBoundsAdapter extends 
119 java.awt.event.HierarchyBoundsAdapter {
120   SampleFrame adaptee;
121 
122   SampleFrame_this_hierarchyBoundsAdapter(SampleFrame adaptee) {
123     this.adaptee = adaptee;
124   }
125 
126 }
127 
128 
129 
130 class SampleFrame_jpnlMain_keyAdapter extends java.awt.event.KeyAdapter {
131   SampleFrame adaptee;
132 
133   SampleFrame_jpnlMain_keyAdapter(SampleFrame adaptee) {
134     this.adaptee = adaptee;
135   }
136 
137 }
138 
139 
140 
141 class SampleFrame_jButton2_actionAdapter implements java.awt.event.ActionListener {
142   SampleFrame adaptee;
143 
144   SampleFrame_jButton2_actionAdapter(SampleFrame adaptee) {
145     this.adaptee = adaptee;
146   }
147   public void actionPerformed(ActionEvent e) {
148     adaptee.jButton2_actionPerformed(e);
149   }
150 }