Combinar datos , eliminar Duplicados y Ordenarlos con List, HashSet y SortedSet JAVA

        String[] arr = {"1", "2", "3", "3"};
        List<String> lista1 = java.util.Arrays.asList(arr);
        List<String> lista2 = java.util.Arrays.asList("8", "6", "5");

        List<String> combinar = new ArrayList<String>();
        combinar.addAll(lista1);
        combinar.addAll(lista2);

        for (String s : combinar) {
            System.out.print(s + " ");
        }
        System.out.println();

        HashSet duplicado = new HashSet();
        duplicado.addAll(combinar);

        Iterator iterador = duplicado.iterator();
        while (iterador.hasNext()) {
            String elemento = (String) iterador.next();
            System.out.print(elemento + " ");
        }
        System.out.println();

        SortedSet ordenado = new TreeSet();
        ordenado.addAll(duplicado);

        iterador = ordenado.iterator();
        while (iterador.hasNext()) {
            String elemento = String.valueOf(iterador.next());
            System.out.print(elemento + " ");
        }
        System.out.println();




Salida:
1 2 3 3 8 6 5
3 2 1 6 5 8
1 2 3 5 6 8


Saludos!!
Armando Mateu

Applet + MySQL ... Usar un Applet y Conectar a MySQL

Usar un Applet y Conectar a MySQL


import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
import javax.swing.table.DefaultTableModel;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author ahmateu
 */
public class Principal extends javax.swing.JApplet {

    /**
     * Initializes the applet Principal
     */
    @Override
    public void init() {
        /* 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(Principal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(Principal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(Principal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(Principal.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the applet */
        try {
            java.awt.EventQueue.invokeAndWait(new Runnable() {
                public void run() {
                    initComponents();
                }
            });