我正在重写我拥有的applet，但是当它加载它时会给我一个运行时异常。
是个例外Exception in thread "main" java.lang.NoSuchMethodError: ClientSettings: method <
init>()V not found
at RunClient.<init>(RunClient.java:41)
at RunClient.main(RunClient.java:63)
这是RunClient：
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Properties;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JSeparator;
public class RunClient extends Applet implements ActionListener {
private Robot robot;
private static final long serialVersionUID = 1L;
public static Properties params = new Properties();
public JFrame mainFrame;
public JPanel mainPane = new JPanel();
public static String[] data;
public String mainurl = getParameter("ip");
public int lang = 0;
public String frameName = getParameter("servername");
public JPanel totalPanel;
private JMenuBar menuBar = new JMenuBar();
private int capNum;
private FilenameFilter filter = new FilenameFilter() {
@Override
public boolean accept(File arg0, String arg1) {
if (arg0.getName().equals("images") && arg1.endsWith("png")) {
return true;
}
return false;
}
};
public static final Object[][] JMENU_BUTTONS = new Object[][]{{"File", new JMenuItem("New Client"), new JSeparator(), new JMenuItem("Exit")}, {"Guides", new JMenuItem("Getting Started"), new JMenuItem("Fighting Monsters"), new JMenuItem("Money Making")}, {"Links", new JMenuItem("Wiki"), new JMenuItem("Forums"), new JMenuItem("Youtube"), new JMenuItem("Donate")}, {"Tools", new JMenuItem("Take a screenshot")}};
public String[] getLoaderParameters() {
return new String[]{getParameter("servername"), getParameter("ip"), getParameter("port")};
}
public static void main(String[] strings) {
data = getLoaderParameters();
new ClientSettings(data);
RunClient runclient = new RunClient();
runclient.doFrame();
}
public RunClient() {
try {
loadCaptureAmts();
robot = new Robot();
} catch(Exception e) {
e.printStackTrace();
}
}
private void loadCaptureAmts() {
capNum = new File("./images/").listFiles(filter).length;
}
public void init() {
doApplet();
}
void doApplet() {
try {
readVars();
startClient();
} catch (Exception exception) {
exception.printStackTrace();
}
}
public void doFrame() {
try {
readVars();
openFrame();
startClient();
} catch (Exception exception) {
exception.printStackTrace();
}
}
public void readVars() throws IOException {
params.put("cabbase", "g.cab");
params.put("java_arguments", "-Xmx1024m -Dsun.java2d.noddraw=true");
params.put("colourid", "0");
params.put("worldid", "16");
params.put("lobbyid", "15");
params.put("demoid", "0");
params.put("demoaddress", "");
params.put("modewhere", "0");
params.put("modewhat", "0");
params.put("lang", "0");
params.put("objecttag", "0");
params.put("js", "1");
params.put("game", "0");
params.put("affid", "0");
params.put("advert", "1");
params.put("settings", "wwGlrZHF5gJcZl7tf7KSRh0MZLhiU0gI0xDX6DwZ-Qk");
params.put("country", "0");
params.put("haveie6", "0");
params.put("havefirefox", "1");
params.put("cookieprefix", "");
params.put("cookiehost", "127.0.0.1");
params.put("cachesubdirid", "0");
params.put("crashurl", "");
params.put("unsignedurl", "");
params.put("sitesettings_member", "1");
params.put("frombilling", "false");
params.put("sskey", "");
params.put("force64mb", "false");
params.put("worldflags", "8");
params.put("lobbyaddress", mainurl);
}
public void openFrame() {
JPopupMenu.setDefaultLightWeightPopupEnabled(false);
mainPane.setLayout(new BorderLayout());
mainPane.add(this);
mainPane.setPreferredSize(new Dimension(765, 503));
totalPanel = new JPanel();
totalPanel.setPreferredSize(new Dimension(765, 503));
totalPanel.setLayout(new BorderLayout());
totalPanel.add(mainPane, BorderLayout.CENTER);
mainFrame = new JFrame(frameName);
mainFrame.setLayout(new BorderLayout());
mainFrame.getContentPane().add(totalPanel, BorderLayout.CENTER);
mainFrame.setDefaultCloseOperation(3);
//setMenuBar();
mainFrame.pack();
mainFrame.setVisible(true);
}
private void setMenuBar() {
int id = 0;
for (int y = 0; y < JMENU_BUTTONS.length; y++) {
JMenu menu = new JMenu();
for (int i = 0; i < JMENU_BUTTONS[y].length; i++) {
if (i == 0) {
menu.setText((String) JMENU_BUTTONS[y][i]);
} else if (JMENU_BUTTONS[y][i] instanceof JMenuItem){
JMenuItem item = (JMenuItem) JMENU_BUTTONS[y][i];
menu.add(item);
item.setActionCommand(""+ id++);
item.addActionListener(this);
} else {
menu.add((JSeparator) JMENU_BUTTONS[y][i]);
}
}
menuBar.add(menu);
}
mainFrame.setJMenuBar(menuBar);
}
public void startClient() {
try {
//RuntimeLoader loader = new RuntimeLoader();
//Class clientclass = loader.loadClass("client");
//Applet clientApplet = (Applet) clientclass.newInstance();
//clientclass.getMethod("provideLoaderApplet",
// new Class[] { java.applet.Applet.class }).invoke(null,
// new Object[] { this });
//clientApplet.init();
//clientApplet.start();
client.provideLoaderApplet(this);
client var_client = new client();
var_client.init();
var_client.start();
} catch (Exception exception) {
exception.printStackTrace();
}
}
public URL getDocumentBase() {
return getCodeBase();
}
public URL getCodeBase() {
URL url;
try {
url = new URL(new StringBuilder().append("http://").append(mainurl)
.toString());
} catch (Exception exception) {
exception.printStackTrace();
return null;
}
return url;
}
@Override
public void actionPerformed(ActionEvent e) {
switch (Integer.parseInt(e.getActionCommand())) {
case 1:
if (JOptionPane.showConfirmDialog(this, "Are you sure you want to quit?") == 0)
System.exit(0);
break;
case 2:
browse("http://dementhium.wikia.com/wiki/Getting_Started");
break;
case 3:
browse("http://forums.dementhium.com/showthread.php?t=143");
break;
case 4:
browse("http://dementhium.wikia.com/wiki/Dementhium_Wiki");
break;
case 5:
browse("http://dementhium.wikia.com/wiki/Dementhium_Wiki");
break;
case 6:
browse("http://forums.dementhium.com/");
break;
case 7:
browse("http://www.youtube.com/DementhiumOfficial");
break;
case 8:
browse("http://forums.dementhium.com/payments.php");
break;
case 9:
writeImage(robot.createScreenCapture(getGameScreenRectangle()));
break;
default:
System.out.println(Integer.parseInt(e.getActionCommand()));
}
}
private Rectangle getGameScreenRectangle() {
Rectangle rect = getBounds();
rect.setLocation(this.getLocationOnScreen());
return rect;
}
private void writeImage(BufferedImage createScreenCapture) {
try {
ImageIO.write(createScreenCapture, "PNG", new File("./images/capture-" + capNum++ + ".png"));
} catch (IOException e) {
e.printStackTrace();
}
}
private void browse(String string) {
if (Desktop.isDesktopSupported() && Desktop.getDesktop().isSupported(Desktop.Action.BROWSE)) {
try {
Desktop.getDesktop().browse(new URI(string));
} catch (IOException e1) {
e1.printStackTrace();
} catch (URISyntaxException e1) {
e1.printStackTrace();
}
}
}
}
这里是ClientSettings.java，这是从各种文件中调用的，args总是使用
定义public String[] data;
在RunClient中
public class ClientSettings {
public int PORT;
public String IPADDRESS;
public String SERVERNAME;
public ClientSettings(String[] args) {
PORT = Integer.parseInt(args[2]);
IPADDRESS = args[1];
SERVERNAME = args[0];
}
}
答案 0 :(得分：10)
RunClient的第41行正在寻找ClientSettings上的默认构造函数，该构造函数不存在。您已经定义了一个带String[]的构造函数，因此不会生成任何默认构造函数。看起来你发布的代码不是正在运行的代码，因为它似乎显示了正确的构造函数调用。
答案 1 :(得分：0)
我有同样的问题，但是在编写单元测试时。创建要测试的对象时，该测试失败，并带有此异常。我确实在正在测试的类中添加了新的构造函数，并且我认为我正在运行的旧代码中没有该构造函数。 清理和重建工作区（使用Maven）为我解决了这个问题。