CODEWITHSUNDEEP
javaswingprogram-entry-point
Michael Goff
Michael Goff

Reputation: 11

Java- Main method cannot be found in class

I knows that this subject has been breached a few times, but I ran into an error when fixing it the way that it was said to be fixed in the others ones.

public static class FlowAp extends JFrame{
    String one = "One";
    String two = "Two";
    String three = "Three";
    String four = "Four";
    String five = "Five";

public static void main(String argv[]){
    FlowAp fa=new FlowAp();
    //Change from BorderLayout default
    fa.getContentPane().setLayout(new FlowLayout());
    fa.setSize(200,200);
    fa.setVisible(true);
}
FlowAp(){

    JButton one = new JButton("One");
    getContentPane().add(one);
    JButton two = new JButton("Two");
    getContentPane().add(two);
    JButton three = new JButton("Three");
    getContentPane().add(three);
    JButton four = new JButton("four");
    getContentPane().add(four);
    JButton five = new JButton("five");
    getContentPane().add(five);

}
}

When I actually put in the parenthesis where they look as though they should be, another error shows up with the flowap."invalid method declaration"

Upvotes: 1

Views: 1166

Answers (4)

LordDoskias
LordDoskias

Reputation: 3191

The modifier "static" for your class is not allowed in your case - remove it and it will work. If you want to access your variables you have to make them static so that you can reference them from the main method.

Upvotes: 2

mKorbel
mKorbel

Reputation: 109815

please there are basic stuff, there are lots of mistakes and I can't comment something, then

enter image description here

from code

import java.awt.FlowLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

public class FlowAp extends JFrame {

    private static final long serialVersionUID = 1L;
    private String one = "One";
    private String two = "Two";
    private String three = "Three";
    private String four = "Four";
    private String five = "Five";

    public FlowAp() {
        JButton oneButton = new JButton(one);
        JButton twoButton = new JButton(two);
        JButton threeButton = new JButton(three);
        JButton fourButton = new JButton(four);
        JButton fiveButton = new JButton(five);

        setTitle("FlowAp");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new FlowLayout());
        add(oneButton);
        add(twoButton);
        add(threeButton);
        add(fourButton);
        add(fiveButton);
        setLocation(100, 100);
        pack();
        setVisible(true);
    }

    public static void main(String argv[]) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                FlowAp fa = new FlowAp();
            }
        });
    }
}

Upvotes: 2

duffymo
duffymo

Reputation: 308733

Try removing "static":

public class FlowAp extends JFrame{

Upvotes: 2

Tobias
Tobias

Reputation: 9380

Should be:

public static void main(String[] argv){

Post the error which occurs when you write this.

Note:
- A class cannot be static.

Upvotes: 1

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