ejemplo de código del tutorial de java jframe

Ejemplo 1: java create jframe

import javax.swing.JFrame;

public class example {
  public static void main(String[] args){
    JFrame frame = new JFrame();
    frame.setSize(100,100);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOES);
    frame.setTitle("Example Frame");
    frame.setVisible(true);
  }
}

Ejemplo 2: cómo crear un JFrame en java

import javax.swing.JFrame;
import java.awt.Rectangle;
import javax.swing.JComponent;
import java.awt.Graphics2D;
import java.awt.Graphics;
import java.awt.Color;

public class ChrismasTree {
    public static void main(String[] args) {
        JFrame window = new JFrame();
        window.setTitle("Christmas Tree");
        window.setSize(800, 1000);
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setVisible(true);
        DrawingComponent DC = new DrawingComponent();
        window.add(DC);
    }
}

class DrawingComponent extends JComponent{
    public void paint(Graphics graph0){
        Graphics2D graph = (Graphics2D) graph0;

        graph.setColor(Color.LIGHT_GRAY);
        graph.draw(new Rectangle(0, 710, 70, 60));

        graph.setColor(Color.BLUE);
        graph.draw(new Rectangle(70, 600, 50, 100));

        graph.setColor(Color.BLACK);
    }
}

Ejemplo 3: ventana de creación de java

//THIS IS A FIX OF THE ONE BY FRANCY FROG
//THEY FIXED THEIRS
import javax.swing.JFrame;

public class example {
  public static void main(String[] args){
    JFrame frame = new JFrame();
    frame.setSize(100,100);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setTitle("Example Frame");
    frame.setVisible(true);
  }
}

Ejemplo 4: ejemplo de jframe simple de java

import javax.swing.*;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.*;
 
public class JFrameExample{
     
    public static void main(String[] args){
        // Create frame with title Registration Demo
        JFrame frame= new JFrame(); 
        frame.setTitle("JFrame Demo");
        frame.pack();
        frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
}

Ejemplo 5: como importar jframe en java

import javax.swing.JFrame;

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