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A file to type in a defined number of marks including the calculation of average, best mark, worse mark etc. The problem is to fill the array through an ActionListener of the button "btnbernehmen2".
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| package gui10; | |
| import java.awt.BorderLayout; | |
| import java.awt.Desktop.Action; | |
| import java.awt.EventQueue; | |
| import javax.swing.JFrame; | |
| import javax.swing.JPanel; | |
| import javax.swing.border.EmptyBorder; | |
| import javax.swing.JLabel; | |
| import javax.swing.JTextField; | |
| import javax.swing.JButton; | |
| import java.awt.event.ActionListener; | |
| import java.awt.event.KeyEvent; | |
| import java.awt.event.KeyListener; | |
| import java.util.Arrays; | |
| import java.awt.event.ActionEvent; | |
| import java.awt.event.KeyAdapter; | |
| public class Notenbilanz extends JFrame { | |
| private JButton btnbernehmen2; | |
| private JLabel lblNote; | |
| private JPanel contentPane; | |
| private JTextField txAnzNoten; | |
| private JTextField txNote; | |
| private JTextField txNoBearbeiten; | |
| private JTextField txNeueNote; | |
| private JButton btnNeueBerechnung; | |
| private JLabel lbleingegebeneNoten; | |
| private JLabel lblDurchschnitt; | |
| private JLabel lblBesteNote; | |
| private JLabel lblSchlechteste; | |
| private JLabel lblNeuerWert; | |
| private JLabel lblNoten; | |
| private JLabel lblNoBearbeiten; | |
| private JButton btnbernehmen; | |
| private JButton btnSpeichern; | |
| private JButton btnOk; | |
| int anzNoten, beste, schlechteste, clicked = 0, counter; | |
| double durchschnitt, noteGesamt, summe, noteSchlechteste, noteBeste, note, summe2; | |
| //Array deklarieren | |
| double[] noten = new double[anzNoten]; | |
| /** | |
| * Launch the application. | |
| */ | |
| public static void main(String[] args) { | |
| EventQueue.invokeLater(new Runnable() { | |
| public void run() { | |
| try { | |
| Notenbilanz frame = new Notenbilanz(); | |
| frame.setVisible(true); | |
| } catch (Exception e) { | |
| e.printStackTrace(); | |
| } | |
| } | |
| }); | |
| } | |
| /** | |
| * Create the frame. | |
| */ | |
| public Notenbilanz() { | |
| setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); | |
| setBounds(100, 100, 507, 362); | |
| contentPane = new JPanel(); | |
| contentPane.setBorder(new EmptyBorder(5, 5, 5, 5)); | |
| setContentPane(contentPane); | |
| contentPane.setLayout(null); | |
| for (int i = 0; i < noten.length ; i++){ | |
| noten[i]=1; | |
| } | |
| JLabel lblAnzNoten = new JLabel("Anzahl Noten"); | |
| lblAnzNoten.setBounds(10, 11, 94, 14); | |
| contentPane.add(lblAnzNoten); | |
| txAnzNoten = new JTextField(); | |
| txAnzNoten.addKeyListener(new KeyAdapter() { | |
| @Override | |
| public void keyPressed(KeyEvent e) { | |
| if(e.getKeyCode() == KeyEvent.VK_ENTER) { | |
| btnbernehmen.requestFocus(); | |
| } | |
| } | |
| }); | |
| txAnzNoten.setBounds(10, 31, 76, 20); | |
| contentPane.add(txAnzNoten); | |
| txAnzNoten.setColumns(10); | |
| btnbernehmen = new JButton("\u00DCbernehmen"); | |
| btnbernehmen.addKeyListener(new KeyAdapter() { | |
| @Override | |
| public void keyPressed(KeyEvent a) { | |
| if(a.getKeyCode() == KeyEvent.VK_ENTER) { | |
| btnbernehmen.setVisible(false); | |
| txAnzNoten.setEnabled(false); | |
| txNote.setVisible(true); | |
| btnbernehmen2.setVisible(true); | |
| lblNote.setVisible(true); | |
| } | |
| } | |
| }); | |
| btnbernehmen.setBounds(118, 31, 131, 20); | |
| contentPane.add(btnbernehmen); | |
| JButton btnEnde = new JButton("Ende"); | |
| btnEnde.addActionListener(new ActionListener() { | |
| public void actionPerformed(ActionEvent arg0) { | |
| System.exit(0); | |
| } | |
| }); | |
| btnEnde.setBounds(381, 256, 98, 20); | |
| contentPane.add(btnEnde); | |
| txNote = new JTextField(); | |
| txNote.addKeyListener(new KeyAdapter() { | |
| @Override | |
| public void keyPressed(KeyEvent e) { | |
| if(e.getKeyCode() == KeyEvent.VK_ENTER) { | |
| btnbernehmen2.requestFocus(); | |
| } | |
| } | |
| }); | |
| txNote.setColumns(10); | |
| txNote.setBounds(10, 93, 76, 20); | |
| txNote.setVisible(false); | |
| contentPane.add(txNote); | |
| btnbernehmen2 = new JButton("\u00DCbernehmen"); | |
| btnbernehmen2.addKeyListener(new KeyAdapter() { | |
| @Override | |
| public void keyPressed(KeyEvent e) { | |
| if(e.getKeyCode() == KeyEvent.VK_ENTER) { | |
| Berechnungen(); | |
| clicked++; | |
| } | |
| } | |
| }); | |
| //*********************fill the Array************************* | |
| btnbernehmen2.addActionListener( new ActionListener() { | |
| @Override | |
| private void ActionPerformed(ActionEvent evt) { | |
| if(!txNote.getText().equals("") | |
| && Double.parseDouble(txNote.getText()) >= 1 | |
| && Double.parseDouble(txNote.getText()) <= 6) { | |
| summe = summe + Double.parseDouble(txNote.getText()); | |
| noten[counter-1] = Double.parseDouble(txNote.getText()); | |
| } | |
| } | |
| }); | |
| btnbernehmen2.setBounds(118, 93, 131, 20); | |
| btnbernehmen2.setVisible(false); | |
| contentPane.add(btnbernehmen2); | |
| lblNote = new JLabel("1. Note"); | |
| lblNote.setBounds(10, 75, 94, 14); | |
| lblNote.setVisible(false); | |
| contentPane.add(lblNote); | |
| btnNeueBerechnung = new JButton("Neue Berechnung"); | |
| btnNeueBerechnung.addActionListener(new ActionListener() { | |
| public void actionPerformed(ActionEvent a) { | |
| txAnzNoten.setEnabled(true); | |
| txAnzNoten.setText(""); | |
| btnbernehmen.setVisible(true); | |
| btnbernehmen2.setVisible(false); | |
| txNote.setEnabled(true); | |
| txNote.setText(""); | |
| lbleingegebeneNoten.setText(""); | |
| lblDurchschnitt.setText(""); | |
| lblBesteNote.setText(""); | |
| lblSchlechteste.setText(""); | |
| btnNeueBerechnung.setVisible(false); | |
| lblNote.setText("1. Note"); | |
| clicked = 0; | |
| counter = 0; | |
| noteGesamt = 0; | |
| lblNoten.setVisible(false); | |
| } | |
| }); | |
| btnNeueBerechnung.addKeyListener(new KeyAdapter() { | |
| @Override | |
| public void keyPressed(KeyEvent e) { | |
| if(e.getKeyCode() == KeyEvent.VK_ENTER) { | |
| txAnzNoten.setEnabled(true); | |
| txAnzNoten.setText(""); | |
| btnbernehmen.setVisible(true); | |
| btnbernehmen2.setVisible(false); | |
| txNote.setEnabled(true); | |
| txNote.setText(""); | |
| lbleingegebeneNoten.setText(""); | |
| lblDurchschnitt.setText(""); | |
| lblBesteNote.setText(""); | |
| lblSchlechteste.setText(""); | |
| btnNeueBerechnung.setVisible(false); | |
| lblNote.setText("1. Note"); | |
| clicked = 0; | |
| counter = 0; | |
| noteGesamt = 0; | |
| lblNoten.setVisible(false); | |
| } | |
| if(e.getKeyCode() == KeyEvent.VK_DOWN) { | |
| btnEnde.requestFocus(); | |
| } | |
| } | |
| }); | |
| btnNeueBerechnung.setBounds(280, 31, 144, 20); | |
| btnNeueBerechnung.setVisible(false); | |
| contentPane.add(btnNeueBerechnung); | |
| lbleingegebeneNoten = new JLabel(""); | |
| lbleingegebeneNoten.setBounds(10, 144, 182, 16); | |
| contentPane.add(lbleingegebeneNoten); | |
| lblDurchschnitt = new JLabel(""); | |
| lblDurchschnitt.setBounds(10, 172, 182, 16); | |
| contentPane.add(lblDurchschnitt); | |
| lblBesteNote = new JLabel(""); | |
| lblBesteNote.setBounds(10, 200, 182, 16); | |
| contentPane.add(lblBesteNote); | |
| lblSchlechteste = new JLabel(""); | |
| lblSchlechteste.setBounds(10, 233, 182, 16); | |
| contentPane.add(lblSchlechteste); | |
| lblNoten = new JLabel(""); | |
| lblNoten.setBounds(10, 260, 353, 16); | |
| contentPane.add(lblNoten); | |
| txNoBearbeiten = new JTextField(); | |
| txNoBearbeiten.setBounds(280, 93, 30, 20); | |
| contentPane.add(txNoBearbeiten); | |
| txNoBearbeiten.setColumns(10); | |
| setVisible(false); | |
| lblNoBearbeiten = new JLabel(". Note bearbeiten"); | |
| lblNoBearbeiten.setBounds(313, 96, 111, 14); | |
| contentPane.add(lblNoBearbeiten); | |
| setVisible(false); | |
| btnOk = new JButton("Ok"); | |
| btnOk.setBounds(423, 93, 56, 20); | |
| contentPane.add(btnOk); | |
| lblNeuerWert = new JLabel(""); | |
| lblNeuerWert.setBounds(280, 125, 111, 14); | |
| contentPane.add(lblNeuerWert); | |
| setVisible(false); | |
| txNeueNote = new JTextField(); | |
| txNeueNote.setColumns(10); | |
| txNeueNote.setBounds(280, 150, 50, 20); | |
| contentPane.add(txNeueNote); | |
| setVisible(false); | |
| btnSpeichern = new JButton("Speichern"); | |
| btnSpeichern.setBounds(352, 150, 127, 20); | |
| contentPane.add(btnSpeichern); | |
| setVisible(false); | |
| } | |
| private void Berechnungen(){ | |
| counter++; | |
| anzNoten = Integer.parseInt(txAnzNoten.getText()); | |
| // Neue Beschriftung der Label und Löschen der eingegebenen Note im Textfenster | |
| txNote.setName("txNote" + counter ); | |
| lblNote.setText(counter + ". Note"); | |
| txNote.selectAll(); | |
| txNote.requestFocus(); | |
| // Erste Ergebnisanzeige im Label: Anzahl der eingegebenen Noten | |
| lbleingegebeneNoten.setText("Anzahl eingebene Noten: " + counter); | |
| // Zweite Ergebnisanzeige im Label: Durchschnitt der eingegebenen Noten | |
| double note = Double.parseDouble(txNote.getText()); | |
| noteGesamt = noteGesamt + note; | |
| durchschnitt = noteGesamt / counter; | |
| lblDurchschnitt.setText("Notendurchschnitt: " + durchschnitt); | |
| // Dritte Ergebnisanzeige im Label: Beste Note | |
| beste = Integer.parseInt(txNote.getText()); | |
| if (clicked == 0) { | |
| noteBeste = Integer.parseInt(txNote.getText()); | |
| } | |
| if (noteBeste > beste) { | |
| noteBeste = beste; | |
| lblBesteNote.setText("Beste Note: " + noteBeste); | |
| } else if (noteBeste == beste) { | |
| lblBesteNote.setText("Beste Note: " + noteBeste); | |
| } else if (noteBeste < beste) { | |
| lblBesteNote.setText("Beste Note: " + noteBeste); | |
| } | |
| // Vierte Ergebnisanzeige im Label: Schlechteste Note | |
| schlechteste = Integer.parseInt(txNote.getText()); | |
| if (clicked == 0) { | |
| noteSchlechteste = Integer.parseInt(txNote.getText()); | |
| } | |
| if (noteSchlechteste < schlechteste) { | |
| noteSchlechteste = schlechteste; | |
| lblSchlechteste.setText("Schlechteste Note: " + noteSchlechteste); | |
| } else if (noteSchlechteste == schlechteste) { | |
| lblSchlechteste.setText("Schlechteste Note: " + noteSchlechteste); | |
| } else if (noteSchlechteste > schlechteste) { | |
| lblSchlechteste.setText("Schlechteste Note: " + noteSchlechteste); | |
| } | |
| // Letzte Änderung durch Eingabe: Neue Berechnung | |
| if (counter == anzNoten) { | |
| btnbernehmen2.setVisible(false); | |
| btnNeueBerechnung.setVisible(true); | |
| btnNeueBerechnung.requestFocus(); | |
| //Änderungen für das Array | |
| lblNoten.setText("Noten: " ); | |
| for (int i=0; i < noten.length; i++) { | |
| lblNoten.setText(lblNoten.getText() + " " + noten[counter]); | |
| } | |
| lblNoten.setVisible(true); | |
| lblNoBearbeiten.setVisible(true); | |
| txNoBearbeiten.setVisible(true); | |
| btnOk.setVisible(true); | |
| lblNeuerWert.setVisible(true); | |
| txNeueNote.setVisible(true); | |
| btnSpeichern.setVisible(true); | |
| } | |
| } | |
| } | |
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| private void btnbernehmen2ActionPerformed(ActionEvent evt){ | |
| if (!txNote.getText().equals("") && Double.parseDouble(txNote.getText()) >= 1 && Double.parseDouble(txNote.getText()) <= 6) { | |
| summe = summe + Double.parseDouble(txNote.getText()); | |
| noten[counter-1] = Double.parseDouble(txNote.getText()); | |
| } | |
| } |
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\ @princessofpain