jTable如何绑定数据库显示数据?

发布网友 发布时间：2022-04-12 16:39

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共3个回答

懂视网 时间：2022-04-12 21:01

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 columnsName=new Vector();
 public Vector Data=new Vector(); 
 //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) + "	";
  str += rs.getString(2) + "	";
  str += rs.getString(3) + "	";
  str += rs.getString(4) + "	";
  str += "
";
  System.out.println(str);
 }
 }

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

}

热心网友 时间：2022-04-12 18:09

热心网友 时间：2022-04-12 19:27