I'm trying to create a program in Java that I have in C++. In my C++ file, I have main the main method outside of any classes. Eclipse does not seem to like this. Is this not possible in Java? Do I need to put main in a class?

import javax.swing.*;
import java.awt.Color;
import java.awt.event.*;

class ExampleProgram extends JFrame {

  public ExampleProgram(){
    String text = new String("I'm a simple Program ");
    String text2 = text.concat(
      "that uses classes and objects");

    JLabel label = new JLabel(text2);
    JPanel panel = new JPanel();
    panel.setBackground(Color.white);

    getContentPane().add(panel);
    panel.add(label);
  }

  public static void main(String[] args){
    ExampleProgram frame = new ExampleProgram();

    frame.setTitle("Fruit $1.25 Each");
    WindowListener l = new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    };

    frame.addWindowListener(l);
    frame.pack();
    frame.setVisible(true);
  }
}

Java will not accept a method that is not part of a class. The only things that have methods are classes and objects (classes have static methods, like

public static void main (String args[])

and objects have instance methods like

public String toString()

That's the way it is. Why not put the main method in the class? Should work fine.