我通过单击按钮动态地将行添加到 JTable。 如何保存MySQL中所有行的数据?我可以保存所选行的数据,但我需要保存用户添加的所有行的数据。 我使用下面的代码从行中获取值:
pcon = model.getValueAt(selectedRowIndex,0).toString();
email = model.getValueAt(selectedRowIndex,3).toString();
mob = model.getValueAt(selectedRowIndex,4).toString();
tel = model.getValueAt(selectedRowIndex,5).toString();
ext = model.getValueAt(selectedRowIndex,6).toString();
posi = model.getValueAt(selectedRowIndex,1).toString();
dep = model.getValueAt(selectedRowIndex,2).toString();
如何移动其他行?
最佳答案
您可以使用从 DefaultTableModel 扩展的自定义表模型以及您自己的数据对象来实现此目的。
请参阅下面的示例。标志“addedLater”可用于区分动态数据和初始数据。
package test;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class JTabeGetRowsFromTable {
static String []columnNames = {
"Name",
"Age",
"Country"
} ;
Vector<Student> students = new Vector<Student> () ;
Vector<Student> buildInitialData (){
students.add(new Student("X", 18, "US")) ;
students.add(new Student("Y", 19, "US")) ;
students.add(new Student("Z", 20, "US")) ;
return students ;
}
Student getNewStudent (){
return new Student("A", 21, "Canada", true) ;
}
protected void buildAndGetTableData (){
JTable table = new JTable () ;
CustomTableModel ctm = new CustomTableModel(buildInitialData()) ;
ctm.setColumnIdentifiers(columnNames);
table.setModel (ctm) ;
JFrame frame = new JFrame () ;
frame.add(new JScrollPane(table), BorderLayout.CENTER) ;
JButton btnAddRow = new JButton ("Add Row");
btnAddRow.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
ctm.addARow(getNewStudent());
}
});
frame.add(btnAddRow, BorderLayout.SOUTH);
frame.setSize(500, 500);
frame.setVisible(true);
}
private static class Student {
String name;
int age;
String country ;
boolean addedLater = false;
public Student (String name, int age, String country){
this(name, age, country, false) ;
}
public Student (String name, int age, String country, boolean addedLater){
this.name = name ;
this.age = age ;
this.country = country ;
}
}
private class CustomTableModel extends DefaultTableModel{
/**
*
*/
private static final long serialVersionUID = -8119518861817992201L;
private Vector<Student> data ;
public CustomTableModel (Vector<Student> data){
this.data = data ;
}
@Override
public Object getValueAt(int row, int column) {
if (data != null && row < data.size()){
Student student = (Student)data.get(row) ;
switch (column){
case 0:
return student.name ;
case 1:
return student.age ;
case 2:
return student.country;
default:
return null ;
}
}
return null ;
}
@Override
public int getRowCount() {
if (data != null){
return data.size();
}
return 0 ;
}
public void addARow (Student student){
data.add(student) ;
fireTableDataChanged();
}
}
public static void main (String args[]){
JTabeGetRowsFromTable test = new JTabeGetRowsFromTable () ;
test.buildAndGetTableData();
}
}
关于java - 动态 JTable - 从所有行获取数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42734401/