add()方法应该从文件到表添加数据，但这不起作用。
该设计适用于使用桌子的电话簿。
添加按钮将行添加到表并将数据写入现有文件。
package democardlayout;
public class panel2 extends javax.swing.JPanel {
public ObjectInputStream in;
public ObjectOutputStream out;
public panel2() {
initComponents();
// addRow(1);
// add();
}
@SuppressWarnings("unchecked")
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
PhoneBookTable = new javax.swing.JTable();
NameField = new javax.swing.JTextField();
PhoneField = new javax.swing.JTextField();
EmailField = new javax.swing.JTextField();
AddButton = new javax.swing.JButton();
UpdateButton = new javax.swing.JButton();
DeleteButton = new javax.swing.JButton();
TableData = new javax.swing.JButton();
jLabel1.setBackground(new java.awt.Color(0, 240, 240));
jLabel1.setFont(new java.awt.Font("Arial", 3, 12)); // NOI18N
jLabel1.setText("Welcome");
PhoneBookTable.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
},
new String [] {
"Name", "PhoneNumber", "Email"
}
));
jScrollPane1.setViewportView(PhoneBookTable);
AddButton.setText("Add");
AddButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
AddButtonActionPerformed(evt);
}
});
UpdateButton.setText("Update");
DeleteButton.setText("Delete");
TableData.setText("ShowTableData");
TableData.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
TableDataActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.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(35, 35, 35)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(NameField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(46, 46, 46)
.addComponent(PhoneField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(40, 40, 40)
.addComponent(EmailField, javax.swing.GroupLayout.PREFERRED_SIZE, 121, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(AddButton, javax.swing.GroupLayout.PREFERRED_SIZE, 71, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(29, 29, 29)
.addComponent(UpdateButton)
.addGap(27, 27, 27)
.addComponent(DeleteButton))
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 368, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addGap(161, 161, 161)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 61, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(TableData))
.addContainerGap(30, Short.MAX_VALUE))
);
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {EmailField, NameField, PhoneField});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(TableData)
.addGap(8, 8, 8)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 245, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(NameField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(PhoneField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(EmailField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(AddButton, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(UpdateButton)
.addComponent(DeleteButton))
.addContainerGap(46, Short.MAX_VALUE))
);
layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {AddButton, DeleteButton, UpdateButton});
}
public void add()
{
try
{
in=new ObjectInputStream(new FileInputStream("record.ser"));
while(true)
{
PhoneRecord1 ob=(PhoneRecord1)in.readObject();
Vector<String>v=new Vector(3);
v.add(ob.Name);
v.add(ob.Phone);
v.add(ob.Email);
System.out.println(ob.Name+" "+ob.Phone+" "+ob.Email);
DefaultTableModel model=(DefaultTableModel)PhoneBookTable.getModel();
model.addRow(v);
}
}
catch(Exception e)
{
}
}
/* public void addRow(int N)
{
Vector<String>v=new Vector(3);
v.clear();
for(int i=0;i<N;i++)
{
DefaultTableModel model=(DefaultTableModel)PhoneBookTable.getModel();
model.addRow(v);
}
}*/
private void AddButtonActionPerformed(java.awt.event.ActionEvent evt) {
DefaultTableModel model=(DefaultTableModel)PhoneBookTable.getModel();
Vector<String> a=new Vector(3);
a.add(NameField.getText());
a.add(PhoneField.getText());
a.add(EmailField.getText());
String s=a.elementAt(0);
String s1=a.elementAt(1);
String s2=a.elementAt(2);
model.addRow(a);
//System.out.println(a.elementAt(0)+" "+ a.elementAt(1)+" "+a.elementAt(2));
try
{
out=new ObjectOutputStream(new FileOutputStream("record.ser",true));
PhoneRecord1 ob1=new PhoneRecord1(s,s1,s2);
System.out.println(ob1.Name);
out.writeObject(ob1);
out.close();
}
catch(Exception e)
{
}
// model.setValueAt("line",1,1);
//model.addRow("i","a","v");
//add();
// model.addRow(new Object[]{NameField.getText(),PhoneField.getText(),EmailField.getText()});
}
private void TableDataActionPerformed(java.awt.event.ActionEvent evt) {
add(); // TODO add your handling code here:
}
// Variables declaration - do not modify
private javax.swing.JButton AddButton;
private javax.swing.JButton DeleteButton;
private javax.swing.JTextField EmailField;
private javax.swing.JTextField NameField;
private javax.swing.JTable PhoneBookTable;
private javax.swing.JTextField PhoneField;
private javax.swing.JButton TableData;
private javax.swing.JButton UpdateButton;
private javax.swing.JLabel jLabel1;
private javax.swing.JScrollPane jScrollPane1;
// End of variables declaration
}
/* the class for phone record*/
package democardlayout;
public class PhoneRecord1 {
public String Name="";
public String Phone="";
public String Email="";
public PhoneRecord1(String Name, String Phone, String Email) {
this.Name = Name;
this.Phone = Phone;
this.Email = Email;
}
}