来自Hellas的问候！。！ 我项目的一个屏幕是： 一个jTable，5个jTextFields，带有5个jLabel和4个jbuttons。 通过单击第一个按钮，我想使用jTextFields中的值向jTable插入一行。通过单击第二个按钮，我想删除一行，其中包含来自jTable的数据。第三个是关于刷新和显示，最后插入的记录在jTable上。最后一个按钮，最简单的按钮，以及我确定它有效的按钮，用于返回我的应用程序的主屏幕。现在我不知道如何使其他3个按钮工作，因为我是java编程的新手，这是我的第一个认真的步骤..任何人可以提供一些有用的提示或链接从他们阅读它将是如此有帮助... 非常感谢您的参与...！！！ 这是我的源代码：
package Forms;
/*import java.beans.Beans;
import static java.rmi.Naming.list;
import static org.eclipse.persistence.jpa.jpql.utility.CollectionTools.list;*/
/**
*
* @author Λάζαρος
*/
public class Customers extends javax.swing.JFrame {
private Object entityManager;
private Object list;
private Object query;
private Object rowId;
private String sql;
/**
* Creates new form Customers
*/
public Customers() {
/*if (!Beans.isDesignTime()) {
entityManager.getTransaction().begin();
}*/
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane2 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jTextField5 = new javax.swing.JTextField();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Πίνακας Πελατών");
jTable1.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null, null},
{null, null, null, null, null},
{null, null, null, null, null},
{null, null, null, null, null}
},
new String [] {
"Κωδικός Πελάτη", "Όνομα", "Επώνυμο ", "Τηλέφωνο", "E-mail "
}
) {
Class[] types = new Class [] {
java.lang.Integer.class, java.lang.String.class, java.lang.String.class, java.lang.String.class, java.lang.String.class
};
public Class getColumnClass(int columnIndex) {
return types [columnIndex];
}
});
jScrollPane2.setViewportView(jTable1);
jLabel1.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jLabel1.setText("Κωδικός Πελάτη:");
jLabel2.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jLabel2.setText("Όνομα:");
jLabel3.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jLabel3.setText("Επώνυμο:");
jLabel4.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jLabel4.setText("Τηλέφωνο:");
jLabel5.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jLabel5.setText("E-mail:");
jTextField1.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jTextField2.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jTextField3.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jTextField4.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jTextField5.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jButton2.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jButton2.setText("Διαγραφή");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton3.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jButton3.setText("Αποθήκευση");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
jButton4.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jButton4.setText("Ανανέωση");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});
jButton5.setFont(new java.awt.Font("Georgia", 1, 12)); // NOI18N
jButton5.setText("Πίσω");
jButton5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton5ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel1)
.addComponent(jLabel2, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel5, javax.swing.GroupLayout.Alignment.LEADING))
.addGap(45, 45, 45)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 333, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 333, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 333, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, 333, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, 333, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(67, 67, 67)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton3, javax.swing.GroupLayout.DEFAULT_SIZE, 137, Short.MAX_VALUE)
.addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton5, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addComponent(jScrollPane2, javax.swing.GroupLayout.Alignment.TRAILING)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 92, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(36, 36, 36)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(21, 21, 21)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(21, 21, 21)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3)
.addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(22, 22, 22)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4)
.addComponent(jButton5, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(22, 22, 22)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
//Back button !!
this.setVisible(false);
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// Delete button !!
rowId = Πελάτες.getValue();
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
//Insert button !!
}
private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
// Refresh button !!
}
/**
* @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
*/
//</editor-fold>
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Customers().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JButton jButton5;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
// End of variables declaration
/*private void PreparedStatement(String insert_into_ΠελάτεςΚωδικόςΠελάτηΌνομαΕπών) {
//throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}*/
}