Java中使用JTable 显示数据_电脑爱好者之家

Java中使用JTable 显示数据

时间:2016-10-14 16:51 来源:未知作者:机器AI 点击:次

1.创建向量Vector保存数据库中数据；
2.创建向量保存每列标题；
3.创建表格数据模型DefaultTableModel；
4.创建表格对象JTable；
5.将JTable加入到课滚动的面板JScrollPane中；
6.将JScrollPane加入到JFrame中。
Admin.java:

程序代码
package cn.edu.ahau.mgc.swing;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
public class Admin extends JFrame{
Admin() {
      Vector row = null;
      DefaultTableModel dtm = new DefaultTableModel();
      String[] tableTitles = {"学号", "姓名", "性别", "年龄" ,"专业"};
      Vector tableTitle = new Vector();
      for (int i = 0; i < tableTitles.length; i++) {
         tableTitle.add(tableTitles[i]);
      }
      ActionRow ar = new ActionRow();
      ar.init();
      row = ar.getRow();
      dtm.setDataVector(row, tableTitle);
      JTable jt = new JTable(dtm);
      JScrollPane jsp = new JScrollPane(jt);
      this.setBounds(400, 300, 400, 300);
      this.getContentPane().add(jsp);
      this.setVisible(true);
      this.addWindowListener(new WindowMonitor());
}

class WindowMonitor extends WindowAdapter {

      public void windowClosing(WindowEvent e) {
         setVisible(false);
         System.exit(0);
      }
}

public static void main(String args[]) {
      new Admin();
}
}

ActionRow.java:

程序代码
package cn.edu.ahau.mgc.swing;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Vector;
public class ActionRow {
private Vector row;

public void init() {
      row = new Vector();
      Connection conn = null;
      Statement stmt = null;
      ResultSet rs = null;
      String sql = "";
      try {
         conn = DB.getConn();
         sql = "select * from stu_stu";
         stmt = DB.getStmt(conn);
         rs = DB.getRs(stmt, sql);
         while (rs.next()) {
            Vector col = new Vector();
            col.add(rs.getInt(1));
            col.add(rs.getString(2));
            col.add(rs.getString(3));
            col.add(rs.getInt(4));
            col.add(rs.getString(5));
            this.row.add(col);
         }
      } catch (SQLException e) {
         e.printStackTrace();
      } finally {
         DB.close(rs);
         DB.close(stmt);
         DB.close(conn);
      }
}
public Vector getRow() {
      return row;
}
public void setRow(Vector row) {
      this.row = row;
}
}

DB.java:

程序代码
package cn.edu.ahau.mgc.swing;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class DB {
public static Connection getConn() {
      Connection conn = null;
      try {
         Class.forName("oracle.jdbc.driver.OracleDriver");
         conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:mgc", "system", "admin");
      } catch (ClassNotFoundException e) {
         e.printStackTrace();
      } catch (SQLException e) {
         e.printStackTrace();
      }
      return conn;
}

public static Statement getStmt(Connection conn) {
      Statement stmt = null;
      try {
         stmt = conn.createStatement();
      } catch (SQLException e) {
         e.printStackTrace();
      }
      return stmt;
}

public static PreparedStatement getPstmt(Connection conn, String sql) {
      PreparedStatement pstmt = null;
      try {
         pstmt = conn.prepareStatement(sql);
      } catch (SQLException e) {
         e.printStackTrace();
      }
      return pstmt;
}

public static ResultSet getRs(PreparedStatement pstmt) {
      ResultSet rs = null;
      try {
         rs = pstmt.executeQuery();
      } catch (SQLException e) {
         e.printStackTrace();
      }
      return rs;
}

public static ResultSet getRs(Statement stmt, String sql) {
      ResultSet rs = null;
      try {
         rs = stmt.executeQuery(sql);
      } catch (SQLException e) {
         e.printStackTrace();
      }
      return rs;
}

public static void close(Connection conn) {
      try {
         if (conn != null)
            conn.close();
            conn = null;
      } catch (SQLException e) {
         e.printStackTrace();
      }
}

public static void close(Statement stmt) {
      try {
         if (stmt != null)
            stmt.close();
            stmt = null;
      } catch (SQLException e) {
         e.printStackTrace();
      }
}

public static void close(PreparedStatement pstmt) {
      try {
         if (pstmt != null)
            pstmt.close();
            pstmt = null;
      } catch (SQLException e) {
         e.printStackTrace();
      }
}

public static void close(ResultSet rs) {
      try {
         if (rs != null)
            rs.close();
            rs = null;
      } catch (SQLException e) {
         e.printStackTrace();
      }
} (责任编辑：机器AI)

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Java中使用JTable 显示数据

时间:2016-10-14 16:51 来源:未知 作者:机器AI 点击:次

时间:2016-10-14 16:51 来源:未知作者:机器AI 点击:次