Příspěvky

1

Vývoj / Java - JTextField a reálne čísla

« kdy: 06. 04. 2019, 10:32:20 »

Dobrý deň,
v programe mám textové polia, zatiaľ tam mám povolené iba celé čísla ale niekde by som potrebovala, aby sa tam dalo napísať aj znamienko mínus resp. desatinná bodka, teda aby sa tam dali napísať reálne čísla. Ja som to zatiaľ riešila takto:
                                                                                                                             
 txt21 = new JTextField();
 txt21.addKeyListener(new KeyAdapter() {
  public void keyTyped(KeyEvent e) {
   char c = e.getKeyChar();
   if (!(Character.isDigit(c)) || c == KeyEvent.VK_BACK_SPACE || c == KeyEvent.VK_DELETE)
    e.consume();
  }
 });

2

Vývoj / Re:JAVA - JButton a odoslanie údajov

« kdy: 06. 04. 2019, 10:10:06 »

Už som to vyriešila  ... večermi to už nemyslelo 

3

Vývoj / Re:JAVA - JButton a odoslanie údajov

« kdy: 05. 04. 2019, 22:53:00 »

Kód: [Vybrat]

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

public class Obraz1 {

public JFrame frame;
public JTextField txtPO1;
private JTextField txtB1;
private int max1 = 25;
// pocet bodov
private int body1;
// pocet otazok
public int otazky1;

/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Obraz1 window = new Obraz1();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the application.
*/
public Obraz1() {
initialize();
}

/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.getContentPane().setBackground(new Color(255, 245, 238));
frame.setBounds(100, 100, 460, 227);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(null);

JLabel lblRentovA = new JLabel("1. \u00DArokovanie: ");
lblRentovA.setFont(new Font("Tahoma", Font.BOLD, 12));
lblRentovA.setBounds(25, 50, 160, 43);
frame.getContentPane().add(lblRentovA);

JLabel lblPoetOtzok = new JLabel("Po\u010Det ot\u00E1zok");
lblPoetOtzok.setFont(new Font("Tahoma", Font.BOLD, 11));
lblPoetOtzok.setBounds(237, 17, 79, 34);
frame.getContentPane().add(lblPoetOtzok);

JLabel lblBody = new JLabel("Body");
lblBody.setFont(new Font("Tahoma", Font.BOLD, 11));
lblBody.setBounds(378, 17, 46, 34);
frame.getContentPane().add(lblBody);

txtPO1 = new JTextField();
txtPO1.addKeyListener(new KeyAdapter() {
@Override
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (!(Character.isDigit(c)) || c == KeyEvent.VK_BACK_SPACE || c == KeyEvent.VK_DELETE)
e.consume();
}
});
txtPO1.setText("5");
txtPO1.setBounds(237, 62, 38, 20);
frame.getContentPane().add(txtPO1);
txtPO1.setColumns(10);

JLabel lblmax = new JLabel("(max 25)");
lblmax.setBounds(285, 65, 72, 14);
frame.getContentPane().add(lblmax);

txtB1 = new JTextField();
txtB1.addKeyListener(new KeyAdapter() {
@Override
public void keyTyped(KeyEvent e) {
char c = e.getKeyChar();
if (!(Character.isDigit(c)) || c == KeyEvent.VK_BACK_SPACE || c == KeyEvent.VK_DELETE)
e.consume();
}
});
txtB1.setText("1");
txtB1.setColumns(10);
txtB1.setBounds(378, 62, 38, 20);
frame.getContentPane().add(txtB1);

JCheckBox checkBox1 = new JCheckBox("");
checkBox1.setBackground(new Color(255, 245, 238));
checkBox1.setSelected(true);
checkBox1.setBounds(176, 50, 26, 43);
frame.getContentPane().add(checkBox1);

JButton btnVytvoriTest = new JButton("Vytvori\u0165 test");
btnVytvoriTest.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (!checkBox1.isSelected()) {
JOptionPane.showMessageDialog(null, "Prosím, vyberte aspoň jednu oblasť!");
} else {
if (checkBox1.isSelected()) {
String b1 = txtB1.getText();
String po1 = txtPO1.getText();
if (b1.isEmpty() || po1.isEmpty()) {
JOptionPane.showMessageDialog(null,
"Prosím, zadajte počet otázok a počet bodov pre 1. oblasť!");
} else {
// s tymito hodnotami potrebujem pracovat v JFrame Obraz2
body1 = Integer.parseInt(b1);
otazky1 = Integer.parseInt(po1);

if ((checkBox1.isSelected() && otazky1 > max1)) {
JOptionPane.showMessageDialog(null, "Počet otázok presiahol maximum!");
} else {

// prechod na dalsiu stranu
Obraz2 o = new Obraz2();
o.setVisible(true);
frame.dispose();

}
}
}

}
}
});
btnVytvoriTest.setBounds(268, 143, 117, 28);
frame.getContentPane().add(btnVytvoriTest);

}
}












import java.awt.Color;
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.SwingConstants;
import javax.swing.border.EmptyBorder;

public class Obraz2 extends JFrame {

private JPanel contentPane;
private GridBagLayout grid1;
private GridBagConstraints constra1;
private Nacitajotazky1 nacitaj;
private Obraz1 ho;
private int pocet;
public int[] potazkyPole1111;
private int body = 0;

/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Obraz2 frame = new Obraz2();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the frame.
*/
public Obraz2() {

ho=new Obraz1();
String a=ho.txtPO1.getText();
pocet=ho.otazky1;
//pocet = 17;
getContentPane().setLayout(null);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 900, 430);
contentPane = new JPanel();
contentPane.setBackground(new Color(255, 245, 238));
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);

JPanel panel = new JPanel();
panel.setBackground(Color.BLUE);
grid1 = new GridBagLayout();
constra1 = new GridBagConstraints();
panel.setLayout(grid1);

contentPane.setLayout(null);

JScrollPane scrollPane = new JScrollPane();
scrollPane.setBounds(10, 11, 857, 299);
contentPane.add(scrollPane);

scrollPane.setViewportView(panel);

JLabel lblNewLabel = new JLabel("New label");
lblNewLabel.setHorizontalAlignment(SwingConstants.LEFT);
lblNewLabel.setBounds(10, 319, 115, 32);
contentPane.add(lblNewLabel);

lblNewLabel.setText("pocet" + pocet);

//naciatnie otazok
nacitaj = new Nacitajotazky1();
File subor = new File("1kapitola.txt");
nacitaj.nacitajaGeneruj(subor, 17);


JPanel[] podpanel = new JPanel[pocet];
JLabel[] otazka = new JLabel[pocet];
JRadioButton[][] jr = new JRadioButton[pocet][4];


JLabel lblPocetBodov = new JLabel("Pocet bodov: " + body);
lblPocetBodov.setHorizontalAlignment(SwingConstants.LEFT);
lblPocetBodov.setBounds(189, 321, 197, 32);
contentPane.add(lblPocetBodov);



JButton btnSp = new JButton("Sp\u00E4\u0165");
btnSp.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Obraz1 window = new Obraz1();
window.frame.setVisible(true);
dispose();

}
});
btnSp.setBounds(10, 358, 89, 23);
contentPane.add(btnSp);


}
}



4

Vývoj / JAVA - JButton a odoslanie údajov

« kdy: 05. 04. 2019, 20:55:16 »

Zdravím,
vedeli by ste mi pomôcť? Mám 2 Jframy a na prvom pri stlačení tlačidla si načítam číslo z JTextField ale neviem si ich rozumne uložiť alebo poslať do druhého JFramu, stále mi vráti hodnotu, ktorá tam je preddefinovaná nie tu zmenenú po stlačení tlačidla.