好的，所以我遇到了一个问题，我的图像在运行.jar文件时没有显示。
修正了使用强盗的修复方法，我认为他的标签是。
无论如何，一旦我通过从getResourceAsStream等获取图像来解决这个问题，它就可以了。因此，在创建背景图像时，带有图像的JLabel和带有图像作为新组件的JButton，这非常有用！
我现在遇到的问题是我有3个按钮需要在某些情况下更改其图标。我已对此进行了测试，但在我的测试类中没有NullPointerException，但是当我在我的项目课程中尝试此操作时，每次尝试NullPointerException时都会得到setIcon。
这是我设置的更改图标的方法。 （我已经尝试了很多不同的方式，并且认为这是最容易看到的，因为无论我做什么都会发生。）这里是构造函数，createGUI以及更改方法的方法图标。请帮我弄清楚我做错了什么。
public class Addons {
// Setup any variables needed for this class to run
private JPanel addonsList;
private JLabel patchNotes;
private JProgressBar progressBar;
private JTable addonsTable;
private SaveSettings sav;
private Updater util;
private JButton instructions;
private JButton installButton;
private JButton finishedButton;
private boolean finishedAll;
private boolean upAvail;
private Task task;
// Setup the tables for use in the listings
/**
* Default constructor
*
*/
public Addons(Updater util) {
// Load up the saved settings.
sav = new SaveSettings();
sav.loadSave();
this.util = util;
finishedAll = false;
upAvail = false;
createAddonsGUI();
}
/**
* This method will create the gui for use in the constructor
*
*/
private void createAddonsGUI() {
// create base panel
addonsList = new JPanel();
addonsList.setPreferredSize(new Dimension(800,435));
addonsList.setOpaque(false);
SpringLayout addonsListLO = new SpringLayout();
addonsList.setLayout(addonsListLO);
// Create and place scroll frame with patch notes panel in it.
JScrollPane patchNotesPanel = createPatchNotesPanel();
patchNotesPanel.setPreferredSize(new Dimension(370,300));
addonsList.add(patchNotesPanel);
// create and place progress bar
//JLabel progressBarBackground = new JLabel(new ImageIcon(util.PROGBACK_IMAGE_PATH));
JLabel progressBarBackground = new JLabel();
try {
Image mypBarPic = ImageIO.read(getClass().getClassLoader().getResourceAsStream("com/dynastyaddons/updater/ProgressBackground.png"));
progressBarBackground = new JLabel(new ImageIcon(mypBarPic));
} catch (IOException ignore) {
System.out.println("Error: " + ignore.getMessage());
}
addonsList.add(progressBarBackground);
SpringLayout pBarLO = new SpringLayout();
progressBarBackground.setLayout(pBarLO);
progressBarBackground.setOpaque(false);
progressBar = new JProgressBar(0, 100);
progressBar.setValue(0);
progressBar.setStringPainted(true);
progressBarBackground.add(progressBar);
pBarLO.putConstraint(SpringLayout.WEST, progressBar, 21, SpringLayout.WEST, progressBarBackground);
pBarLO.putConstraint(SpringLayout.NORTH, progressBar, 15, SpringLayout.NORTH, progressBarBackground);
pBarLO.putConstraint(SpringLayout.EAST, progressBar, -21, SpringLayout.EAST, progressBarBackground);
pBarLO.putConstraint(SpringLayout.SOUTH, progressBar, -45, SpringLayout.SOUTH, progressBarBackground);
// Create and place Finish button
//finishedButton = new JButton(new ImageIcon(util.FINOFF_IMAGE_PATH));
//public static final String FINOFF_IMAGE_PATH = "F:\\Java Programs\\Updater\\src\\com\\dynastyaddons\\updater\\images\\FinishedOff.png";
JButton finishedButton = new JButton();
try {
Image myfinishedButtonPic = ImageIO.read(getClass().getClassLoader().getResourceAsStream("com/dynastyaddons/updater/FinishedOff.png"));
finishedButton = new JButton(new ImageIcon(myfinishedButtonPic));
} catch (IOException ignore) {
System.out.println("Error: " + ignore.getMessage());
}
finishedButton.setBorderPainted(false);
finishedButton.setContentAreaFilled(false);
finishedButton.setFocusPainted(false);
finishedButton.setOpaque(false);
finishedButton.setToolTipText("<html><font size=6>When button glows blue, you're all done and you can press this to close the udpater.</font></html>");
finishedButton.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) { if(finishedAll) {System.exit(0);} }
});
addonsList.add(finishedButton);
// Create and place Install Addons Button
//installButton = new JButton(new ImageIcon(util.INSTOFF_IMAGE_PATH));
//public static final String INSTOFF_IMAGE_PATH = "F:\\Java Programs\\Updater\\src\\com\\dynastyaddons\\updater\\images\\InstallUpdatesOFF.png";
JButton installButton = new JButton();
try {
Image myinstallButtonPic = ImageIO.read(getClass().getClassLoader().getResourceAsStream("com/dynastyaddons/updater/InstallUpdatesOFF.png"));
installButton = new JButton(new ImageIcon(myinstallButtonPic));
} catch (IOException ignore) {
System.out.println("Error: " + ignore.getMessage());
}
installButton.setBorderPainted(false);
installButton.setContentAreaFilled(false);
installButton.setFocusPainted(false);
installButton.setOpaque(false);
installButton.setToolTipText("<html><center><font size=6>When arrows to the left of this button glow blue, you have updates to install.<br /> <br />Press this button to get the updated versions of your addons.</font></center></html>");
installButton.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
// This will handle installing needed updates
if(upAvail) {
JFrame root = util.getRootFrame();
root.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
task = new Task();
task.execute();
root.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
}
}
});
addonsList.add(installButton);
// Create and place scroll frame with the addons list table in it.
JPanel addonListPanel = new JPanel();
addonListPanel.setPreferredSize(new Dimension(388,245));
addonsTable = new JTable(new DynastyTableModel());
JTableHeader header = addonsTable.getTableHeader();
ColumnHeaderToolTips tips = new ColumnHeaderToolTips();
header.addMouseMotionListener(tips);
addonListPanel.setLayout(new BorderLayout());
addonListPanel.add(addonsTable.getTableHeader(), BorderLayout.PAGE_START);
addonListPanel.add(new JScrollPane(addonsTable), BorderLayout.CENTER);
// setup table settings
addonsTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
addonsTable.setRowSelectionAllowed(true);
addonsTable.setColumnSelectionAllowed(false);
addonsTable.setBackground(Color.BLACK);
addonsTable.setForeground(Color.WHITE);
//addonsTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
addonsTable.setFillsViewportHeight(true);
addonsTable.setPreferredScrollableViewportSize(addonListPanel.getPreferredSize());
addonsTable.setRowHeight(31);
// setup column width and editing
fitToContentWidth(addonsTable, 0);
fitToContentWidth(addonsTable, 1);
fitToContentWidth(addonsTable, 2);
fitToContentWidth(addonsTable, 3);
fitToContentWidth(addonsTable, 4);
// properly align text in cells
DefaultTableCellRenderer centerRenderer = new DefaultTableCellRenderer();
centerRenderer.setHorizontalAlignment(DefaultTableCellRenderer.CENTER);
addonsTable.getColumn("Version").setCellRenderer( centerRenderer );
//addonsTable.getColumn("Purchase").setCellRenderer( centerRenderer );
addonsTable.getColumn("Size").setCellRenderer( centerRenderer );
//addonsTable.getColumn("Update").setCellRenderer( centerRenderer );
addonsTable.getColumn("Name").setCellRenderer( centerRenderer );
// setup list selector
ListSelectionModel listSelectionModel = addonsTable.getSelectionModel();
listSelectionModel.addListSelectionListener(new SharedListSelectionHandler());
addonsTable.setSelectionModel(listSelectionModel);
addonListPanel.setOpaque(false);
addonsList.add(addonListPanel);
// Create and place the view instructions button.
//instructions = new JButton(new ImageIcon(util.INSTRUCTIONS_BUTTON));
//public static final String INSTRUCTIONS_BUTTON = "F:\\Java Programs\\Updater\\src\\com\\dynastyaddons\\updater\\images\\instructions.png";
JButton instructions = new JButton();
try {
Image myinstructionsPic = ImageIO.read(getClass().getClassLoader().getResourceAsStream("com/dynastyaddons/updater/instructions.png"));
instructions = new JButton(new ImageIcon(myinstructionsPic));
} catch (IOException ignore) {
System.out.println("Error: " + ignore.getMessage());
}
instructions.setBorderPainted(false);
instructions.setContentAreaFilled(false);
instructions.setFocusPainted(false);
instructions.setOpaque(false);
instructions.setToolTipText("<html><center><font size=6>When this button shows purchase you can click it to go purchase the selected addon.<br /><br /> When it's showing Instructions you can click it to go see the manual for the selected addon.</font></center></html>");
// Deal with nothing selected when clciking this.
instructions.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
int row = addonsTable.getSelectedRow();
String ad = "";
DynastyTableModel tm = (DynastyTableModel) addonsTable.getModel();
if ( row == -1 ) { return; }
if ( row == 1 || row == 0 || row == 2 ) { ad = "Booster"; }
else {
ad = (String) tm.getValueAt(row,1);
ad = ad.replaceAll("\\s+", "");
}
boolean purchased = (Boolean) tm.getValueAt(row,3);
if (purchased) {
sendTo(ad, 1);
} else {
sendTo(ad,0);
}
}
});
addonsList.add(instructions);
// Constrain all items to the base panel
addonsListLO.putConstraint(SpringLayout.EAST, patchNotesPanel, -18, SpringLayout.EAST, addonsList);
addonsListLO.putConstraint(SpringLayout.NORTH, patchNotesPanel, 0, SpringLayout.NORTH, addonsList);
addonsListLO.putConstraint(SpringLayout.SOUTH, progressBarBackground, -20, SpringLayout.SOUTH, addonsList);
addonsListLO.putConstraint(SpringLayout.WEST, progressBarBackground, 100, SpringLayout.WEST, addonsList);
addonsListLO.putConstraint(SpringLayout.EAST, finishedButton, 0, SpringLayout.EAST, addonsList);
addonsListLO.putConstraint(SpringLayout.SOUTH, finishedButton, -20, SpringLayout.SOUTH, addonsList);
addonsListLO.putConstraint(SpringLayout.SOUTH, installButton, -10, SpringLayout.NORTH, progressBarBackground);
addonsListLO.putConstraint(SpringLayout.WEST, installButton, 190, SpringLayout.WEST, addonsList);
addonsListLO.putConstraint(SpringLayout.WEST, addonListPanel, 18, SpringLayout.WEST, addonsList);
addonsListLO.putConstraint(SpringLayout.NORTH, addonListPanel, 0, SpringLayout.NORTH, addonsList);
addonsListLO.putConstraint(SpringLayout.NORTH, instructions, -180, SpringLayout.SOUTH, addonsList);
addonsListLO.putConstraint(SpringLayout.WEST, instructions, 20, SpringLayout.WEST, addonsList);
}
/**
* This will update the table with info from the users database entry.
*
*/
public void updateTable() {
String totalIn = "";
String s = "";
String aName = "";
String aVersion = "";
String aFileSize = "";
String aInfo = "";
DynastyTableModel tm = (DynastyTableModel) addonsTable.getModel();
sav.loadSave();
try {
URL serverURL = new URL(Updater.URL_CONNECT + "action=get_addons&email=" + sav.getSetting("UserName") + "&PHPSESSID=" + util.getPHPSessionID());
HttpURLConnection serverConnection = (HttpURLConnection) serverURL.openConnection();
serverConnection.setRequestMethod("GET");
BufferedReader in = new BufferedReader(new InputStreamReader(serverConnection.getInputStream()));
while (( totalIn = in.readLine()) != null) {
s += totalIn;
}
String[] splitOne = s.split("\\|-\\|");
for ( int a = 0; a < splitOne.length; a++) {
String[] splitTwo = splitOne[a].split("\\|");
String addonName = splitTwo[0];
for ( int b = 0; b < tm.getRowCount(); b++) {
if ( addonName.equals( (String) tm.getValueAt(b,1) ) ) { // b is the correct place to place the table info into addons[][]
tm.setValueAt(splitTwo[1],b,2);
tm.setValueAt(true,b,3);
double byteSize = Double.parseDouble(splitTwo[2]);
double kbyteSize = (byteSize/1024.0);
DecimalFormat dec = new DecimalFormat("00.00");
tm.setValueAt(dec.format(kbyteSize),b,4);
pNotes[b][0] = splitTwo[3];
}
}
}
} catch (MalformedURLException e) {
JOptionPane.showMessageDialog(null, "Please send this entire error to support@dyanstyaddons.com. Also you can close the updater and re-open it and that sometimes removes this issue.\n Error # 22", "Attention!",JOptionPane.ERROR_MESSAGE);
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "Please send this entire error to support@dynastyaddons.com. Also you can close the updater and re-open it and that sometimes removes this issue.\n Error # 23" + e.getMessage(), "Attention!",JOptionPane.ERROR_MESSAGE);
}
checkLocalAddons();
}
/**
* This method checks the version numbers to see what what needs updating
* then updates the table to reflect this.
*
*/
private void needsUpdate() {
DynastyTableModel tm = (DynastyTableModel)addonsTable.getModel();
for ( int a = 0; a < tm.getRowCount(); a++) {
String ver = (String) tm.getValueAt(a,2).toString();
if(!ver.equals(localVersion[a][0])) {
boolean purch = (boolean) tm.getValueAt(a,3);
System.out.println("Set value at " + a + " 0 to: " + purch);
if(purch) {tm.setValueAt(true,a,0);}
}else{
tm.setValueAt(false,a,0);
}
}
checkUpdatesAvail();
}
/**
* This method will check if any of the udpate boxes are checked, and update the install button.
*
*
*/
private void checkUpdatesAvail() {
DynastyTableModel tm = (DynastyTableModel) addonsTable.getModel();
boolean update = false;
for ( int a = 0; a < tm.getRowCount(); a++) {
boolean u = (Boolean) tm.getValueAt(a,0);
if (u) { update = u; }
}
if (update) {
setImageOnButton("instOn");
upAvail = true;
} else { finishedEverything(); }
}
/**
* This method handles what happens when you click the Install Updates button.
*
*/
private void updateNeededAddons() {
DynastyTableModel tm = (DynastyTableModel) addonsTable.getModel();
boolean[] addUp = {false,false,false,false,false,false,false};
for (int a = 0; a < tm.getRowCount(); a++) {
boolean update = (Boolean) tm.getValueAt(a,0);
int getResult = 2;
if (update) {
addUp[a] = true;
try {
URL dlAddon = new URL(util.URL_CONNECT + "action=download&addon=" + tm.getValueAt(a,1) + "&email=" + sav.getSetting("UserName") + "&PHPSESSID=" + util.getPHPSessionID());
String fileName = tm.getValueAt(a,1) + ".zip";
String fileS = (String) tm.getValueAt(a,4);
double fileSize = Double.parseDouble(fileS);
getResult = getAddons(dlAddon, fileName, fileSize);
} catch(MalformedURLException e) {
JOptionPane.showMessageDialog(null, "We tried to create a query to download your addons, but got a malformedURLException. Please send this entire error to support@dyanstyaddons.com. Also you can close the updater and re-open it and that sometimes removes this issue.\n Error # 31", "Attention!",JOptionPane.ERROR_MESSAGE);
}
if(getResult == 1) {
installAddon((String)tm.getValueAt(a,1));
}
}
}
}
/**
* This method will update the patch notes panel,
* it only allows updating from within this class.
*
* @param txt The new txt for the patch notes panel.
*
*/
private void setPatchNotes(String txt) {
patchNotes.setText(txt);
int prefSize = 370;
boolean width = true;
View view = (View) patchNotes.getClientProperty(javax.swing.plaf.basic.BasicHTML.propertyKey);
view.setSize(width ? prefSize : 0, width ? 0 : prefSize);
float w = view.getPreferredSpan(View.X_AXIS);
float h = view.getPreferredSpan(View.Y_AXIS);
patchNotes.setPreferredSize(new Dimension((int) Math.ceil(w) - 17, (int) Math.ceil(h) + 100));
}
/**
* This will query the server for the updates to the addons
* that are needed and download them as needed.
*
*/
private int getAddons(URL url, String localFilename, double len) {
InputStream is = null;
FileOutputStream fos = null;
try {
URLConnection urlConn = url.openConnection();
HttpURLConnection resp = (HttpURLConnection) urlConn;
int responseCode = resp.getResponseCode();
is = urlConn.getInputStream();
fos = new FileOutputStream(System.getenv("SystemDrive") + "\\DynastyAddons\\" + localFilename);
byte[] buffer = new byte[4096];
int leng = (int) len;
while ((leng = is.read(buffer)) > 0) {
fos.write(buffer,0,leng);
}
is.close();
fos.close();
return 1;
} catch (MalformedURLException e) {
JOptionPane.showMessageDialog(null, "We tried to download your addons, but got a malformedURLException. Please send this entire error to support@dyanstyaddons.com. Also you can close the updater and re-open it and that sometimes removes this issue.\n Error # 32", "Attention!",JOptionPane.ERROR_MESSAGE);
return 2;
} catch (IOException e) {
JOptionPane.showMessageDialog(null, "We tried to download your addons, but got an IOException. Please send this entire error to support@dynastyaddons.com. Also you can close the updater and re-open it and that sometimes removes this issue.\n Error # 33" + e, "Attention!",JOptionPane.ERROR_MESSAGE);
return 2;
}
}
/**
* This will update the finished button once all is done.
*
*/
private void finishedEverything() {
setImageOnButton("instOff");
setImageOnButton("finOn");
upAvail = false;
finishedAll = true;
}
public void setImageOnButton(String buttonName){
ImageIcon icon;
switch(buttonName) {
case "purchase": try {
System.out.println("Trying to setIcon on Instructions Button. File: com/dynastyaddons/updater/Purchase.png exists? " + new File("com/dynastyaddons/updater/Purchase.png").exists());
Image pic1 = ImageIO.read(Addons.class.getClassLoader().getResourceAsStream("com/dynastyaddons/updater/Purchase.png"));
icon = new ImageIcon(pic1);
instructions.setIcon(icon);
} catch (IOException e) { System.out.println("IO Exception setting icon to instructions: " + e.getMessage()); }
break;
case "instructions":try {
System.out.println("Trying to setIcon on Instructions Button. File: com/dynastyaddons/updater/instructions.png exists? " + new File("com/dynastyaddons/updater/instructions.png").exists());
Image pic2 = ImageIO.read(Addons.class.getClassLoader().getResourceAsStream("com/dynastyaddons/updater/instructions.png"));
icon = new ImageIcon(pic2);
instructions.setIcon(icon);
} catch (IOException e) { System.out.println("IO Exception setting icon to instructions2: " + e.getMessage()); }
break;
case "finOn": try {
System.out.println("Trying to setIcon on Instructions Button. File: com/dynastyaddons/updater/FinishedOn.png exists? " + new File("com/dynastyaddons/updater/FinishedOn.png").exists());
Image pic3 = ImageIO.read(Addons.class.getClassLoader().getResourceAsStream("com/dynastyaddons/updater/FinishedOn.png"));
icon = new ImageIcon(pic3);
finishedButton.setIcon(icon);
} catch (IOException e) { System.out.println("IO Exception setting icon to finished: " + e.getMessage()); }
break;
case "finOff": try {
System.out.println("Trying to setIcon on Instructions Button. File: com/dynastyaddons/updater/FinishedOff.png exists? " + new File("com/dynastyaddons/updater/FinishedOff.png").exists());
Image pic4 = ImageIO.read(Addons.class.getClassLoader().getResourceAsStream("com/dynastyaddons/updater/FinishedOff.png"));
icon = new ImageIcon(pic4);
finishedButton.setIcon(icon);
} catch (IOException e) { System.out.println("IO Exception setting icon to finished2: " + e.getMessage()); }
break;
case "instOn": try {
System.out.println("Trying to setIcon on Instructions Button. File: com/dynastyaddons/updater/InstallUpdatesON.png exists? " + new File("com/dynastyaddons/updater/InstallUpdatesON.png").exists());
Image pic5 = ImageIO.read(Addons.class.getClassLoader().getResourceAsStream("com/dynastyaddons/updater/InstallUpdatesON.png"));
icon = new ImageIcon(pic5);
installButton.setIcon(icon);
} catch (IOException e) { System.out.println("IO Exception setting icon to install: " + e.getMessage()); }
break;
case "instOff": try {
System.out.println("Trying to setIcon on Instructions Button. File: com/dynastyaddons/updater/InstallUpdatesOFF.png exists? " + new File("com/dynastyaddons/updater/InstallUpdatesOFF.png").exists());
Image pic6 = ImageIO.read(Addons.class.getClassLoader().getResourceAsStream("com/dynastyaddons/updater/InstallUpdatesOFF.png"));
icon = new ImageIcon(pic6);
installButton.setIcon(icon);
} catch (IOException e) { System.out.println("IO Exception setting icon to install2: " + e.getMessage()); }
break;
}
}
// This internal class will handle the modle for the table used to show the addon list.
class DynastyTableModel extends AbstractTableModel {
private String[] columnNames = {"Update",
"Name",
"Version",
"Purchase",
"Size"};
private Object[][] initialData = {
{new Boolean(false), "Booster", new Double(1.0), new Boolean(false), new Double(0)},
{new Boolean(false), "BoosterAlliance", new Double(1.0), new Boolean(false), new Double(0)},
{new Boolean(false), "BoosterHorde", new Double(1.0), new Boolean(false), new Double(0)},
{new Boolean(false), "Edge", new Double(1.0), new Boolean(false), new Double(0)},
{new Boolean(false), "Impulse", new Double(1.0), new Boolean(false), new Double(0)},
{new Boolean(false), "Tycoon", new Double(1.0), new Boolean(false), new Double(0)},
{new Boolean(false), "DynastyCore", new Double(1.0), new Boolean(false), new Double(0)},
};
public int getColumnCount() { return columnNames.length; }
public int getRowCount() { return initialData.length; }
public String getColumnName(int col) { return columnNames[col]; }
public Object getValueAt(int row, int col) { return initialData[row][col]; }
public Class getColumnClass(int c) { return getValueAt(0,c).getClass(); }
@Override
public void setValueAt(Object value, int row, int col) {
initialData[row][col] = value;
fireTableCellUpdated(row, col);
}
}
// This internal class will help handle when a row is selected in the table.
class SharedListSelectionHandler implements ListSelectionListener {
public void valueChanged(ListSelectionEvent e) {
if ( !e.getValueIsAdjusting() ) {
ListSelectionModel lsm = (ListSelectionModel)e.getSource();
int selected = lsm.getMinSelectionIndex();
// if purchased addon display patch notes
DynastyTableModel tm = (DynastyTableModel) addonsTable.getModel();
boolean selectedValue = (Boolean) tm.getValueAt(selected,3);
if ( selectedValue ) {
setPatchNotes(pNotes[selected][0]);
setImageOnButton("instructions");
}
else { // Otherwise update Install Instructions button to show Purchase instead.
// save currently selected addon name for use in the purchase button?
String p = "";
if (selected == 1 || selected == 2) {
p = "Booster";
} else { p = (String) tm.getValueAt(selected,1); }
setPatchNotes("<HTML>You have not purchased this addon, please go to http://dynastyaddons.com/" + p + " or click the Purchase button below the list of addons here to open the purchase page.</HTML>");
setImageOnButton("purchase");
}
}
}
}
}
从上面的代码中可以看出，使用createGUI等创建按钮的getResource()工作正常，它是底部的setImagesOnButton()方法＆＃39 ; s给我适合。
我还尝试包含调用方法的位置，以使其更清晰。此外，println中的setImagesOnButton打印出文件已找到并存在，然后在下一行中NullPointerException出现，说它不会存在？让我感到困惑。
答案 0 :(得分：0)
好的，我弄明白发生了什么事。解决这个问题的三件事。首先，我意识到null问题不是我试图放在按钮上的图标，而是在CreateGUI方法的顶部错误放置了JButton调用。我删除了（因为我已经在构造函数中创建了它）并且它消失了。其次，我摆脱了愚蠢的方法，因为它让我感到困惑。 （setImageOnButton）最后我发现，如果我将images目录放在包的根目录中，那么使用新的ImageIcon（Image.read（getClass（）。getClassLoader（）。getResourceAsStream（＆＃34; images）调用图像/imagename.png"）））;我可以找到它，因为我把它与包而不是课程相关联，它就像一个魅力！我编辑，震撼了它，并在我的妻子身上进行了测试。电脑，它工作得很完美！谢谢大家的帮助，没有所有好消息就无法完成！至少可以说，我完全理解资源以及如何将它们放入应用程序并立即使用它们。 :)