CODEWITHSUNDEEP
javajavac
3dsboy08
3dsboy08

Reputation: 146

Error with a main method

So I was making a very basic program in java and this happened:

Exception in thread "main" java.lang.ClassNotFoundException: Main
at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:259)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:116)

Here is my "program"

public class GUI{
private JTextArea usernameInput;
private JTextArea licenceKeyOutput;
private JButton generateLicenceKeyButton;
private JPanel root;
private JPanel mainGUI;

public static void main(String[] args) {
    JFrame frame = new JFrame("GUI");
    frame.setContentPane(new GUI().mainGUI);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
}

public GUI() {
    generateLicenceKeyButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            if(usernameInput.getText() == ""){
                System.err.println("[IntelliGen] Invalid username received, telling user");
                usernameInput.setText("Invalid Username");
                licenceKeyOutput.setText("Invalid Username");
            }else{

            }
        }
    });
}

NOTE: I made this program with IntelliJ Idea's GUI Creator. It seems that the JDK is corrupted, but it works fine with other programs. Can you guys help me in any way?

Upvotes: 1

Views: 1388

Answers (2)

ControlAltDel
ControlAltDel

Reputation: 35011

Exception in thread "main" java.lang.ClassNotFoundException: Main

This means you are trying to run a class named main, but your class is named GUI

Upvotes: 0

Jigar Joshi
Jigar Joshi

Reputation: 240870

In your IntelliJ's launcher configuration Main class is set to Main which is invalid, in this case your Main class is GUI

Run > Edit Configuration > Main class:

Upvotes: 1

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