ПРИМЕР № 3
«Компоненты выбора»
Исходный код примера:
package tsn.javase.demo03;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
public class Form1 extends javax.swing.JFrame {
public Form1() {
initComponents();
}
@SuppressWarnings("unchecked")
// //GEN-BEGIN:initComponents
private void initComponents() {
buttonGroup1 = new javax.swing.ButtonGroup();
jCheckBox3 = new javax.swing.JCheckBox();
jCheckBox2 = new javax.swing.JCheckBox();
jCheckBox1 = new javax.swing.JCheckBox();
jPanel2 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
jList1 = new javax.swing.JList();
jPanel3 = new javax.swing.JPanel();
jRadioButton1 = new javax.swing.JRadioButton();
jRadioButton2 = new javax.swing.JRadioButton();
jRadioButton3 = new javax.swing.JRadioButton();
jPanel4 = new javax.swing.JPanel();
jPanel5 = new javax.swing.JPanel();
jComboBox2 = new javax.swing.JComboBox();
jTextField1 = new javax.swing.JTextField();
jScrollBar1 = new javax.swing.JScrollBar();
jLabel2 = new javax.swing.JLabel();
jPanel1 = new javax.swing.JPanel();
jProgressBar1 = new javax.swing.JProgressBar();
jSlider1 = new javax.swing.JSlider();
jLabel3 = new javax.swing.JLabel();
jLabel1 = new javax.swing.JLabel();
jScrollPane2 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Компоненты выбора");
setResizable(false);
getContentPane().setLayout(null);
jCheckBox3.setText("Сотовый телефон");
jCheckBox3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jCheckBox1ActionPerformed(evt);
}
});
getContentPane().add(jCheckBox3);
jCheckBox3.setBounds(200, 70, 120, 23);
jCheckBox2.setText("Ноутбук");
jCheckBox2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jCheckBox1ActionPerformed(evt);
}
});
getContentPane().add(jCheckBox2);
jCheckBox2.setBounds(200, 50, 69, 23);
jCheckBox1.setText("Планшет");
jCheckBox1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jCheckBox1ActionPerformed(evt);
}
});
getContentPane().add(jCheckBox1);
jCheckBox1.setBounds(200, 30, 97, 20);
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "jList"));
jPanel2.setLayout(null);
jList1.setModel(new javax.swing.AbstractListModel() {
String[] strings = { "Java", "Delphi", "C++", "C#", "Assembler" };
public int getSize() { return strings.length; }
public Object getElementAt(int i) { return strings[i]; }
});
jList1.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
jList1.setSelectedIndex(0);
jList1.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
public void valueChanged(javax.swing.event.ListSelectionEvent evt) {
jList1_valueChanged(evt);
}
});
jScrollPane1.setViewportView(jList1);
jPanel2.add(jScrollPane1);
jScrollPane1.setBounds(10, 20, 131, 100);
getContentPane().add(jPanel2);
jPanel2.setBounds(20, 70, 150, 130);
jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder("jRadioButton + ButtonGroup"));
jPanel3.setLayout(null);
buttonGroup1.add(jRadioButton1);
jRadioButton1.setSelected(true);
jRadioButton1.setText("Pascal");
jRadioButton1.setActionCommand("1");
jRadioButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jRadioButton1_actionPerformed(evt);
}
});
jPanel3.add(jRadioButton1);
jRadioButton1.setBounds(10, 20, 110, 23);
buttonGroup1.add(jRadioButton2);
jRadioButton2.setText("Basic");
jRadioButton2.setActionCommand("2");
jRadioButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jRadioButton1_actionPerformed(evt);
}
});
jPanel3.add(jRadioButton2);
jRadioButton2.setBounds(10, 40, 100, 23);
buttonGroup1.add(jRadioButton3);
jRadioButton3.setText("Fortran");
jRadioButton3.setActionCommand("3");
jRadioButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jRadioButton1_actionPerformed(evt);
}
});
jPanel3.add(jRadioButton3);
jRadioButton3.setBounds(10, 60, 100, 23);
getContentPane().add(jPanel3);
jPanel3.setBounds(190, 110, 180, 90);
jPanel4.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.RAISED), "jCheckBox"));
javax.swing.GroupLayout jPanel4Layout = new javax.swing.GroupLayout(jPanel4);
jPanel4.setLayout(jPanel4Layout);
jPanel4Layout.setHorizontalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 168, Short.MAX_VALUE)
);
jPanel4Layout.setVerticalGroup(
jPanel4Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 68, Short.MAX_VALUE)
);
getContentPane().add(jPanel4);
jPanel4.setBounds(180, 10, 180, 90);
jPanel5.setBorder(javax.swing.BorderFactory.createTitledBorder(javax.swing.BorderFactory.createTitledBorder("jComboBox"), "jComboBox"));
jPanel5.setLayout(null);
jComboBox2.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "ИнЕУ", "ПГУ", "МГУ" }));
jComboBox2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jComboBox2ActionPerformed(evt);
}
});
jPanel5.add(jComboBox2);
jComboBox2.setBounds(10, 20, 120, 20);
getContentPane().add(jPanel5);
jPanel5.setBounds(20, 10, 140, 50);
jTextField1.setEditable(false);
jTextField1.setText("<Выберите значение>");
getContentPane().add(jTextField1);
jTextField1.setBounds(30, 210, 150, 20);
jScrollBar1.setOrientation(javax.swing.JScrollBar.HORIZONTAL);
jScrollBar1.setValue(50);
jScrollBar1.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
jScrollBar1.addAdjustmentListener(new java.awt.event.AdjustmentListener() {
public void adjustmentValueChanged(java.awt.event.AdjustmentEvent evt) {
jScrollBar1_adjustmentValueChanged(evt);
}
});
getContentPane().add(jScrollBar1);
jScrollBar1.setBounds(40, 330, 300, 20);
jLabel2.setText("jScroolBar");
getContentPane().add(jLabel2);
jLabel2.setBounds(360, 330, 60, 14);
jPanel1.setBorder(javax.swing.BorderFactory.createCompoundBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED), javax.swing.BorderFactory.createEtchedBorder()));
jPanel1.setLayout(null);
jProgressBar1.setValue(50);
jProgressBar1.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
jPanel1.add(jProgressBar1);
jProgressBar1.setBounds(10, 110, 310, 21);
jSlider1.setMajorTickSpacing(10);
jSlider1.setMinorTickSpacing(5);
jSlider1.setPaintLabels(true);
jSlider1.setPaintTicks(true);
jSlider1.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jSlider1.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
jSlider1stateChanged(evt);
}
});
jPanel1.add(jSlider1);
jSlider1.setBounds(10, 10, 320, 60);
jLabel3.setText("jProgressBar");
jPanel1.add(jLabel3);
jLabel3.setBounds(330, 110, 80, 14);
jLabel1.setText("jSlider");
jPanel1.add(jLabel1);
jLabel1.setBounds(350, 30, 29, 14);
getContentPane().add(jPanel1);
jPanel1.setBounds(30, 250, 420, 150);
jTextArea1.setColumns(20);
jTextArea1.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jTextArea1.setRows(5);
jTextArea1.setText("Привет\nВсем\nЭто\nпрограмма\nна Java");
jScrollPane2.setViewportView(jTextArea1);
getContentPane().add(jScrollPane2);
jScrollPane2.setBounds(390, 10, 160, 120);
jButton1.setText("Выбранная строка");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
getContentPane().add(jButton1);
jButton1.setBounds(410, 140, 130, 23);
jButton2.setText("Свои строки");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
getContentPane().add(jButton2);
jButton2.setBounds(410, 170, 130, 23);
jButton3.setText("Проход по строкам");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
getContentPane().add(jButton3);
jButton3.setBounds(410, 200, 130, 23);
jButton4.setText("Выход");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});
getContentPane().add(jButton4);
jButton4.setBounds(490, 350, 65, 23);
setSize(new java.awt.Dimension(593, 434));
setLocationRelativeTo(null);
}// //GEN-END:initComponents
private void jComboBox2ActionPerformed(java.awt.event.ActionEvent evt) {
//GEN-FIRST:event_jComboBox2ActionPerformed
// Обработка выбора из списка jComboBox
jTextField1.setText(jComboBox2.getSelectedItem().toString());
}//GEN-LAST:event_jComboBox2ActionPerformed
private void jList1_valueChanged(javax.swing.event.ListSelectionEvent evt) {
//GEN-FIRST:event_jList1_valueChanged
// Работа с jList
jTextField1.setText(jList1.getSelectedValue().toString());
}//GEN-LAST:event_jList1_valueChanged
private void jCheckBox1ActionPerformed(java.awt.event.ActionEvent evt) {
//GEN-FIRST:event_jCheckBox1ActionPerformed
// Работа с jCheckBox
if (jCheckBox1.isSelected()) {
jTextField1.setText(jCheckBox1.getText());
}
if (jCheckBox2.isSelected()) {
jTextField1.setText(jCheckBox2.getText());
}
if (jCheckBox3.isSelected()) {
jTextField1.setText(jCheckBox3.getText());
}
}//GEN-LAST:event_jCheckBox1ActionPerformed
private void jRadioButton1_actionPerformed(java.awt.event.ActionEvent evt) {
//GEN-FIRST:event_jRadioButton1_actionPerformed
// Выбор значения из группы jRadioButton
JRadioButton button = (JRadioButton) evt.getSource();
jTextField1.setText(button.getActionCommand());
jTextField1.setText(button.getText());
}//GEN-LAST:event_jRadioButton1_actionPerformed
private void jSlider1stateChanged(javax.swing.event.ChangeEvent evt) {
//GEN-FIRST:event_jSlider1stateChanged
// Изменение значения слайдера
jProgressBar1.setValue(jSlider1.getValue());
}//GEN-LAST:event_jSlider1stateChanged
private void jScrollBar1_adjustmentValueChanged(java.awt.event.AdjustmentEvent evt) {
//GEN-FIRST:event_jScrollBar1_adjustmentValueChanged
// Изменение значения jProgressBar
jProgressBar1.setValue(jScrollBar1.getValue());
}//GEN-LAST:event_jScrollBar1_adjustmentValueChanged
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
//GEN-FIRST:event_jButton1ActionPerformed
// Выбор строки из jTextArea
try {
//int line = jTextArea1.getLineCount() - 1; // Количество строк
int line = jTextArea1.getLineOfOffset(jTextArea1.getCaret().getDot()); // Номер выбранной строки
int start = jTextArea1.getLineStartOffset(line);
int end = jTextArea1.getLineEndOffset(line);
String s = jTextArea1.getText(start, end - start); // Узнаем текст выбранной строки
jTextField1.setText(s);
//jTextArea1.replaceRange("", start, end);
} catch (Exception f) {
}
}//GEN-LAST:event_jButton1ActionPerformed
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
//GEN-FIRST:event_jButton2ActionPerformed
// Свои строки в jTextArea
jTextArea1.setText(""); // Удалить все значения
jTextArea1.append("Строка 1\n"); // Добавить значение и перейти на новую строку
jTextArea1.append("Строка 2\n"); // Добавить значение и перейти на новую строку
jTextArea1.append("Строка 3"); // Добавить значение
}//GEN-LAST:event_jButton2ActionPerformed
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
//GEN-FIRST:event_jButton3ActionPerformed
// Проход по строкам в jTextArea
try {
int line_count = jTextArea1.getLineCount() - 1; // Количество строк
for (int i = 0; i <= line_count; i++) { // Цикл по всем строкам
int start = jTextArea1.getLineStartOffset(i); // Определим начало строки
int end = jTextArea1.getLineEndOffset(i); // Определим конец строки
String s = jTextArea1.getText(start, end - start); // Узнаем текст строки
jTextArea1.replaceRange(Integer.toString(i + 1) + ") " + s, start, end); // Изменим строку
}
} catch (Exception f) {
}
}//GEN-LAST:event_jButton3ActionPerformed
private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
//GEN-FIRST:event_jButton4ActionPerformed
// Выход
JOptionPane.showMessageDialog(null, "До свидания!", "Инфо", JOptionPane.INFORMATION_MESSAGE);
System.exit(0);
}//GEN-LAST:event_jButton4ActionPerformed
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//
/* 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 ("Windows".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Form1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Form1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Form1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Form1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Form1().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.ButtonGroup buttonGroup1;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JCheckBox jCheckBox1;
private javax.swing.JCheckBox jCheckBox2;
private javax.swing.JCheckBox jCheckBox3;
private javax.swing.JComboBox jComboBox2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JList jList1;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JPanel jPanel4;
private javax.swing.JPanel jPanel5;
private javax.swing.JProgressBar jProgressBar1;
private javax.swing.JRadioButton jRadioButton1;
private javax.swing.JRadioButton jRadioButton2;
private javax.swing.JRadioButton jRadioButton3;
private javax.swing.JScrollBar jScrollBar1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JSlider jSlider1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
// End of variables declaration//GEN-END:variables
}