JTable与H2数据库的使用方法

JTable控件与H2数据库的使用方法：

JTable使用的关键点有两个：

1. JTable的数据

抽象类AbstractTableModel的子类，完成数据的管理。

JTable类---------------使用AbstractTableModel子类创建，直接提取Abstract子类的数据。

2.JTable的滚动

将JTable加入JScrollPane

将JScrollPane加入JFrame

通过JScrollPane面板类完成滚动。其实类似的面板容器还有许多

JTabbedPane------选项卡面板

JSplitPane-----------分割条面板

JScrollPane----------滚动条面板

JDesktopPane-------MDI面板

3.数据的存储问题

全部数据存储在集合类中，如Array，Vector

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package testh2;

import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;

class TableModel extends AbstractTableModel
{
public Vector<String> columnsName=new Vector<String>();
public Vector<String[]> Data=new Vector<String[]>();
//public String[] columnsName={"a","b"};
//public Object[][] Data={{"a1","b1"},{"a2","b2"}};
public int getRowCount()
{

return Data.size();
}
public int getColumnCount()
{
return columnsName.size();
}
public Object getValueAt(int rowIndex, int columnIndex)
{

return Data.get(rowIndex)[columnIndex];
}
}
/**
*
* @author wind
*/
public class TestH2 {

public static void GUItest() throws InterruptedException
{
final TableModel tm=new TableModel();
tm.columnsName.add("第一列");
tm.columnsName.add("第二列");
tm.columnsName.add("第三列");
tm.columnsName.add("第四列");
tm.columnsName.add("第五列");
tm.columnsName.add("第六列");
tm.columnsName.add("第七列");
tm.columnsName.add("第八列");
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame jf=new JFrame();
JTable jt=new JTable(tm);
jt.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
JScrollPane js=new JScrollPane(jt);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.setSize(600, 400);
jf.setVisible(true);
jf.add(js);
}
});
for(int i=3;i<50;i++)
{
tm.Data.add(new String[]{"a"+i,"b"+i,"c"+i,"d"+i,"e"+i,"f"+i,"g"+i,"h"+i});
//Thread.sleep(1000);
}
}
public static void H2Test() throws ClassNotFoundException, SQLException
{
Class.forName("org.h2.Driver");
Connection conn = DriverManager.getConnection("jdbc:h2:E:/test", "sa", "123456");
Statement stat = conn.createStatement();
ResultSet rs = stat.executeQuery("select * from Test");
String str;
while (rs.next()) {
str = rs.getString(1) + "\t";
str += rs.getString(2) + "\t";
str += rs.getString(3) + "\t";
str += rs.getString(4) + "\t";
str += "\n";
System.out.println(str);
}
}

public static void main(String[] args) throws ClassNotFoundException, SQLException, InterruptedException
{
// TODO code application logic here
H2Test();
GUItest();
}

}

使用JTable就可以完成对H2数据库的编辑等操作。