การเขียน Java Application โครงสร้างของไฟล์ (Run first Application in Java)

class  myClass {
	
    public static void main(String[] args) {
        System.out.println("**********************************************");
        System.out.println("Welcome to the java world.. by ThaiCreate.Com");
        System.out.println("**********************************************");
    }
    
}

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

class  myClass {
	
    public static void main(String[] args) {
        JFrame f = new JFrame("A JFrame");
        f.setSize(250, 250);
        f.setLocation(300,200);
        f.getContentPane().add(BorderLayout.CENTER, new JTextArea(10, 40));
        f.setVisible(true);
    }
    
}

import javax.swing.*;

public class myClass extends JFrame {

	public static void main(String[] args) {
		myClass frameTabel = new myClass();
	}

	JLabel welcome = new JLabel("Welcome to ThaiCreate.Com");
	JPanel panel = new JPanel();

	myClass() {
		super("ThaiCreate.Com Tutorial Java");
		setSize(300, 200);
		setLocation(500, 280);
		panel.setLayout(null);

		welcome.setBounds(70, 50, 150, 60);

		panel.add(welcome);

		getContentPane().add(panel);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setVisible(true);
	}

}

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

class  myClass {
	
    public static void main(String[] args) {
        JFrame f = new JFrame("This is a test");
        f.setSize(400, 150);
        Container content = f.getContentPane();
        content.setBackground(Color.white);
        content.setLayout(new FlowLayout()); 
        content.add(new JButton("Button 1"));
        content.add(new JButton("Button 2"));
        content.add(new JButton("Button 3"));
        f.setVisible(true);
      }
 }