Carlos Hoyos

Hi All,

I want the user of an applet to be able to save a selected file ussing a button. I was wondering if that might be done with an hyperlink or something like that. How can I add an Hyperlik to a button? Any other ideas?

Thanks much!

Hi Craig, Thanks a lot for the code now it is working exactly as it is supposed to. Thanks again!!

Hello All,

I am interested in having an application to display some gif files where the user can select from a list the image to display. For that I am basically using ImageIcon. The application basically works fine but When I overlap other window or I scroll down (or up) and then go back to the applet the image is not conserved. In other words, if I select an image different than the firstone and open another window and go back, the applet will display the fist image loaded. For a "working" minimal appler you can go to http://shadow.eas.gatech.edu/~choyos/Minimal/

I am also including the code.. Thanks a lot!!!

import java.awt.*; import java.awt.image.*; import java.awt.event.*; import java.applet.Applet; import java.io.*; import java.util.*; import javax.swing.*; import javax.swing.event.*; import java.net.*; public class Minimal extends javax.swing.JApplet implements ListSelectionListener { private DefaultListModel listModel; public String[] filenames; public String filename; public String datesname; public String title; public String path; public String[] dates; public Vector data2 = new Vector(); public ImageIcon icon; public void init() { initComponents(); loadData(); } public void loadData(){ URL u=null; DataInputStream inFile=null; String record = null; int recCount = 0; int botpos = 0; String datesname = getParameter("Dates"); String filename = getParameter("Files"); try{ u=new URL(getCodeBase(),datesname); inFile=new DataInputStream(u.openStream()); while ( (record=inFile.readLine()) != null ) { recCount++; data2.addElement(record); } }catch (Exception ee){ System.out.println("Got an Exception error! " + ee.getMessage()); return; }finally { if (inFile != null) { try { inFile.close(); } catch (IOException ioe) { } } } dates = new String[data2.size()]; filenames = new String[data2.size()]; try{ u=new URL(getCodeBase(),filename); inFile=new DataInputStream(u.openStream()); for (int i=0;i<data2.size();i++){ record=inFile.readLine(); filenames=record; } }catch (Exception ee){ System.out.println("Got an Exception error! " + ee.getMessage()); return; }finally { if (inFile != null) { try { inFile.close(); } catch (IOException ioe) { } } } jList1.setListData(data2); jList1.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); jScrollPane1.getViewport().setView(jList1); data2.toString(); data2.toArray(); dates = (String[])data2.toArray(dates); jList1.addListSelectionListener(this); jScrollPane1.getViewport().setView(jList1); jList1.setSelectedIndex(0); } private void initComponents() { jPanel2 = new javax.swing.JPanel(); jPanel3 = new javax.swing.JPanel(); jPanel4 = new javax.swing.JPanel(); jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); jPanel1 = new javax.swing.JPanel(); jList1 = new javax.swing.JList(); jScrollPane1 = new javax.swing.JScrollPane(); jPanel2.setLayout(new java.awt.BorderLayout()); jPanel3.setLayout(new java.awt.BorderLayout()); jPanel4.setLayout(new java.awt.BorderLayout()); jLabel2.setText("Dates:"); jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.CENTER); jPanel3.add(jPanel4, java.awt.BorderLayout.SOUTH); jLabel1.setBackground(new java.awt.Color(255, 255, 255)); jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER); jPanel3.add(jLabel1, java.awt.BorderLayout.NORTH); jPanel2.add(jPanel3, java.awt.BorderLayout.CENTER); getContentPane().add(jPanel2, java.awt.BorderLayout.CENTER); jPanel1.setLayout(new java.awt.BorderLayout()); jPanel1.add(jLabel2, java.awt.BorderLayout.NORTH); jPanel1.add(jScrollPane1, java.awt.BorderLayout.CENTER); getContentPane().add(jPanel1, java.awt.BorderLayout.WEST); } public void valueChanged(ListSelectionEvent e) { jPanel5 = new javax.swing.JPanel(); jPanel5.setLayout(new java.awt.BorderLayout()); jPanel3.add(jPanel5, java.awt.BorderLayout.CENTER); DisplayImage(jList1.getSelectedIndex()); } private void DisplayImage(int index){ MediaTracker tracker = new MediaTracker(this); Image image = null; try { String path = getParameter("Path"); image = getImage(new URL(getCodeBase(),path+filenames[index])); } catch(MalformedURLException e) { System.out.println("Failed to create URL:\n" + e); } tracker.addImage(image,0); try { tracker.waitForAll(); if(tracker.isErrorAny()) return; ImageIcon icon = new ImageIcon(image); JLabel label = new JLabel(icon); jPanel5.add(label,java.awt.BorderLayout.CENTER); String title = getParameter("Title"); jLabel1.setText(title+": "+dates[index]); } catch(InterruptedException e) { System.out.println(e); } } private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JList jList1; private javax.swing.JPanel jPanel1; private javax.swing.JPanel jPanel2; private javax.swing.JPanel jPanel3; private javax.swing.JPanel jPanel4; private javax.swing.JPanel jPanel5; private javax.swing.JScrollPane jScrollPane1; }