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[英]checkbox on jtable and getting values of corresponding rows in java swing
[英]Getting String value rather than checkbox on JTable using Java Swing?
我正在創建一個JTable,我已經設法創建一個可滾動的表,並添加了一些隨機數據。 現在我想嘗試在每行的最后一列添加一個復選框。
現在這是我到目前為止所得到的:
當你查看他的表時,你可以看到,而不是獲取復選框,我得到一個字符串值為“false”的列,這不是我想要的。 我想要一個可選擇的框,我想允許多個選擇。 這是該類的代碼:
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.JScrollPane;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import javax.swing.JButton;
public class BiogramTable extends JFrame {
private JPanel contentPane;
private JTable table;
private JCheckBox checkbox;
private static final long serialVersionUID = 1L;
/**
* Create the frame.
*/
public BiogramTable() {
Object[] columns = {"Name", "Age" , "Gender" , "Boolean"};
Object[][] data = {{"John", "18", "Male", false},
{"Jessica", "19", "Female", false},
{"Dave", "52", "Male", false},
{"Jake", "30", "Male", false},
{"Jeremy", "14", "Male", false},
{"Jemma", "34", "Female", false},
{"Amy", "16", "Female", false},
{"Patrick", "18", "Male", false}};
DefaultTableModel model = new DefaultTableModel(data, columns);
final JCheckBox checkBox = new JCheckBox();
table = new JTable(model) {
private static final long serialVersionUID = 1L;
//@Override
//public Class getColumnClass(int column) {
//switch (column) {
//case 0:
// return String.class;
//case 1:
//return String.class;
//case 2:
//return Integer.class;
//case 3:
//return Double.class;
//default:
//return Boolean.class;
//}
//}
};
//table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
getContentPane().add(scrollPane);
}
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
BiogramTable frame = new BiogramTable();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.pack();
frame.setLocation(150, 150);
frame.setVisible(true);
}
});
}
}
我已經對此做了大量研究,但我還沒有找到使用swing的解決方案。 如果您能讓我知道我的方法有什么問題,我會很高興,讓我知道正確的方法是什么,因為這是我第一次使用Windows構建器在Java swing中創建JTable。 我在堆棧溢出中看到了類似的問題,但我的問題是不同的,因為我得到的是String而不是復選框。 所以我的問題是為什么會這樣?
您應該根據您的數據要求覆蓋getColumnClass
方法。 請參閱以下更改。
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.JScrollPane;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import javax.swing.JButton;
class BiogramTable extends JFrame {
private JPanel contentPane;
private JTable table;
private JCheckBox checkbox;
private static final long serialVersionUID = 1L;
/**
* Create the frame.
*/
public BiogramTable() {
Object[] columns = {"Name", "Age", "Gender", "Boolean"};
Object[][] data = {{"John", "18", "Male", false},
{"Jessica", "19", "Female", false},
{"Dave", "52", "Male", false},
{"Jake", "30", "Male", false},
{"Jeremy", "14", "Male", false},
{"Jemma", "34", "Female", false},
{"Amy", "16", "Female", false},
{"Patrick", "18", "Male", false}};
DefaultTableModel model = new DefaultTableModel(data, columns);
final JCheckBox checkBox = new JCheckBox();
table = new JTable(model) {
private static final long serialVersionUID = 1L;
@Override
public Class getColumnClass(int column) {
switch (column) {
case 0:
return String.class;
case 1:
return Integer.class;
case 2:
return String.class;
case 3:
return Boolean.class;
default:
return String.class;
}
}
};
//table.setPreferredScrollableViewportSize(table.getPreferredSize());
JScrollPane scrollPane = new JScrollPane(table);
getContentPane().add(scrollPane);
}
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
BiogramTable frame = new BiogramTable();
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
frame.pack();
frame.setLocation(150, 150);
frame.setVisible(true);
}
});
}
}
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