Curso de Java Netbeans Completo☕ [01.- Crear una interfaz gráfica con netbeans GUI]

En este tutorial vamos a crear una interfaz grafica de java apoyados de netbeans y ahora si vamos a poder arrastras y soltar (drag and drop) los diferentes elementos button, label, textField y muchos mas.

Java swing: https://es.wikipedia.org/wiki/Swing_(biblioteca_gr%C3%A1fica)
Documentación de java: https://docs.oracle.com/javase/8/docs/api/

Codigo: https://github.com/programadornovato/JavaGUI/commit/fb6106e0845b6440dddc93618274c5c8c281dd6f

package com.programadornovato.javagui;

import javax.swing.JOptionPane;

/**
 *
 * @author eugenio
 */
public class Formulario extends javax.swing.JFrame {

    /**
     * Creates new form Formulario
     */
    public Formulario() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        nombre = new javax.swing.JTextField();
        botonQueSaluda = new javax.swing.JButton();
        saludo = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jLabel1.setText("Humano!!! ingresa tu nombre en la caja de abajo");

        botonQueSaluda.setText("Humano haz click aqui");
        botonQueSaluda.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                botonQueSaludaActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(34, 34, 34)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(saludo, javax.swing.GroupLayout.PREFERRED_SIZE, 310, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                        .addComponent(botonQueSaluda)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(nombre, javax.swing.GroupLayout.PREFERRED_SIZE, 328, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addContainerGap(38, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(27, 27, 27)
                .addComponent(jLabel1)
                .addGap(18, 18, 18)
                .addComponent(nombre, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(botonQueSaluda)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 18, Short.MAX_VALUE)
                .addComponent(saludo, javax.swing.GroupLayout.PREFERRED_SIZE, 19, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(135, 135, 135))
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void botonQueSaludaActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_botonQueSaludaActionPerformed
        if( nombre.getText().isEmpty()==false ){
            saludo.setText("Hola "+nombre.getText());
        }else{
            JOptionPane.showMessageDialog(null,"Humano estupido ingresa un nombre");
        }

    }//GEN-LAST:event_botonQueSaludaActionPerformed

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(Formulario.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Formulario.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Formulario.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Formulario.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Formulario().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton botonQueSaluda;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JTextField nombre;
    private javax.swing.JLabel saludo;
    // End of variables declaration//GEN-END:variables
}

[Curso] Java Netbeans GUI Completo☕: https://www.youtube.com/watch?v=S0XKc_MJCS0&list=PLCTD_CpMeEKThfXo8D-RXOGu5FarO7_qv

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Pagina de netbeans: https://netbeans.org/

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