[英]How to retrieve value from JTextField in JTable?
讓我分兩部分來回答我的問題。
JTable
JTextfiled
檢索值? 姓名和年齡應該從retrive JTextfield
上jbutton1
行動,並通過點擊jbutton2
的所有數據Jtable
應該存儲在SQL數據庫。
下面是我的代碼:
package tablefilterdemo;
public class Tableinputhroughtextbox extends javax.swing.JFrame {
public Tableinputhroughtextbox() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jButton1 = new javax.swing.JButton();
jtfname = new javax.swing.JTextField();
jtfage = new javax.swing.JTextField();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null},
{null, null},
{null, null},
{null, null}
},
new String [] {
"Name", "Age"
}
));
jScrollPane1.setViewportView(jTable1);
jButton1.setText("Submit for Table");
jButton2.setText("Submit for SQL");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(29, 29, 29)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(53, 53, 53)
.addComponent(jtfname, javax.swing.GroupLayout.PREFERRED_SIZE, 74, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(46, 46, 46)
.addComponent(jtfage, javax.swing.GroupLayout.PREFERRED_SIZE, 74, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1)
.addGap(18, 18, 18)
.addComponent(jButton2)))
.addContainerGap(82, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(92, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jtfname, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jtfage, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton2))
.addGap(47, 47, 47)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 322, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(19, 19, 19))
);
pack();
}// </editor-fold>
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* 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 ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(Tableinputhroughtextbox.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Tableinputhroughtextbox.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Tableinputhroughtextbox.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Tableinputhroughtextbox.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Tableinputhroughtextbox().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jtfage;
private javax.swing.JTextField jtfname;
// End of variables declaration
}
1)如何從JTable中的文本文件中檢索值?
我假設你是說JTextField? 請注意您的拼寫,因為編程是一種精確的練習,因此您不能在編寫代碼或提問時草率行事。
您可以通過getText()
方法按照教程中的說明獲取文本。 請在這里看看。
2)所有數據如何一次存儲在數據庫中?
請澄清您的問題。 如果您正在尋找如何在Java中使用數據庫,請參見此處 。 有關如何使用JTables和表模型的信息,請參見此處 。 我建議您將數據庫代碼與Swing代碼分開,以幫助簡化調試和編碼。
編輯1
關於將JTable與數據庫一起使用,已經在此問題上發布了大量答案,您最好在此站點上搜索這些答案。 這不是一件小事,您需要做一些研究。 例如,請查看以下鏈接:
編輯2
您在評論中提問:
好的,讓我們提出一個問題。在上面的代碼中,我創建了2個JTexfield和and Button。現在在這里我想要那些檢索到的數據如何在Jtable中顯示?
如果要從放在JTable的一行中的兩個JTextField中獲取數據,請考慮執行以下操作:
Vector<String>
或String數組,將兩個String放入Vector或數組中,然后在DefaultTableModel變量上調用addRow(rowData)
。 假定向量或數組名為rowData。 addRow(...)
方法,並且可能會傳入自定義類的對象,該對象包含您的兩段數據。 如果走這條路線,請確保您的addRow(...)
方法調用正確的fireTableXXX(...)
方法,此處將為fireTableRowsInserted(int firstRow, int lastRow)
。 但是最重要的是,請務必閱讀我上面鏈接的JTable教程,否則我的回答對您沒有意義。
編輯3
例如,使用DefaultTableModel:
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.Vector;
import javax.swing.*;
import javax.swing.table.DefaultTableModel;
@SuppressWarnings("serial")
public class MyTableEg extends JPanel {
private static final String[] COLUMNS = {"Column A", "Column B"};
private DefaultTableModel model = new DefaultTableModel(COLUMNS, 0);
private JTable table = new JTable(model);
private JTextField fieldA = new JTextField(10);
private JTextField fieldB = new JTextField(10);
private JButton button = new JButton(new ButtonAction("Add Data", KeyEvent.VK_A));
public MyTableEg() {
JPanel topPanel = new JPanel();
topPanel.add(fieldA);
topPanel.add(fieldB);
topPanel.add(button);
setLayout(new BorderLayout());
add(topPanel, BorderLayout.NORTH);
add(new JScrollPane(table), BorderLayout.CENTER);
}
private class ButtonAction extends AbstractAction {
public ButtonAction(String name, int mnemonic) {
super(name);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent evt) {
// ***** here's the important bit of code
Vector<String> rowData = new Vector<String>(); // create a row Vector
rowData.add(fieldA.getText()); // fill it with data from JTextFields
rowData.add(fieldB.getText());
model.addRow(rowData); // and add to table model
}
}
private static void createAndShowGui() {
JFrame frame = new JFrame("MyTableEg");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(new MyTableEg());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
//I guess you already got value into your JTextField
//Here I'm getting only two column into my JTable, you can take as many as you need
jbutton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//TODO Auto-generated method stub
DefaultTableModel model=(DefaultTableModel) table.getModel();
try
{
String s1,s2;
s1=tfield1.getText();
s2=tfield2.getText();
model.addRow(new Object[] {s1,s2});
}
catch(Exception ae){
ae.printStackTrace();
}
}
});
這可能有幫助:)
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