Swingato J 3

 package it.cefi;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Applicazione extends JFrame {

private static final long serialVersionUID = 1L;

private JPanel panel1;

private JLabel label1;

private JLabel label2;

private JTextArea area1;

private JTextField field1;

private JButton bottone;

private JButton parolaChiaveButton;

private List<String> parole = new ArrayList<>();
private List<String> anagrammi = new ArrayList<>();

private String parolaUtente = new String();

private JButton bottone2;

private boolean controllo(String stringa, String parolaUtente) {

char [] s1 = stringa.toCharArray();

char [] s2 = parolaUtente.toCharArray();

Arrays.sort(s1);

Arrays.sort(s2);

String final1 = new String(s1);

String final2 = new String(s2);

if(final1.equals(final2)) {

return true;

}else {

return false;

}

}

private boolean isString(String str) {

char[] chars = str.toCharArray();

      for(char c : chars){

         if(Character.isDigit(c)){

            return false;

         }

      }

return true;

}

public Applicazione() {

            super("Anagramma");

panel1 = new JPanel();

label1 = new JLabel("Parola Chiave");

label2 = new JLabel("Parole");

parolaChiaveButton = new JButton("INSERISCI PAROLA");

area1 = new JTextArea(10, 16);

field1 = new JTextField(32);

bottone2 = new JButton("Aggiungi");

bottone = new JButton("Controlla");

add(panel1);

panel1.add(label1);

panel1.add(field1);

panel1.add(parolaChiaveButton);

panel1.add(label2);

panel1.add(area1);

panel1.add(bottone);

panel1.add(bottone2);

bottone2.setEnabled(false);

bottone.setEnabled(false);

area1.setEnabled(false);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

setSize(500, 250);

setLocationRelativeTo(null);

parolaChiaveButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String parola = field1.getText();

if (parola != null && !parola.isBlank() && isString(parola)) {

parola = parola.toLowerCase();

parolaUtente = parola;

JOptionPane.showMessageDialog(null,

"parola inserita correttamente", "OK",

JOptionPane.INFORMATION_MESSAGE);

bottone2.setEnabled(true);

bottone.setEnabled(true);

area1.setEnabled(true);

}

}

});

bottone2.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

String listaParole = area1.getText();

String[] split = listaParole.split("\n");

for (int i = 0; i < split.length; i++) {

parole.add(split[i]);

}

}

});

bottone.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) {

for(String s : parole) {

if(controllo(s, parolaUtente)) {

anagrammi.add(s);

}

}

if(anagrammi != null) {

JOptionPane.showMessageDialog(Applicazione.this,

anagrammi.stream().map(s -> String.valueOf(s)).collect(Collectors.joining("\n")), "anagrammi",

JOptionPane.INFORMATION_MESSAGE);

}

}

});

}

// Pattern regex = Pattern.compile("[a-z]+");

// Matcher regexMatcher = regex.matcher(input);

// if (regexMatcher.matches() || input.equals("\n"))

public static void main(String[] args) {

new Applicazione();

}

}