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Display the column name using DBCP
Posted on: April 3, 2010 at 12:00 AM
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This tutorial demonstrate how to display column name of the table using DBCP.

Code:

import java.sql.*;
import org.apache.commons.dbcp.BasicDataSource;

class GetColumnName {
  public static void main(String[] args) {
    BasicDataSource bds = new BasicDataSource();
    bds.setDriverClassName("com.mysql.jdbc.Driver");
    bds.setUrl("jdbc:mysql://localhost:3306/mydb");
    bds.setUsername("root");
    bds.setPassword("");
    try {
      Connection con = bds.getConnection();
      try {
        Statement st = con.createStatement();
        ResultSet rs = st.executeQuery("SELECT * FROM student");
        ResultSetMetaData md = rs.getMetaData();
        int col = md.getColumnCount();
        System.out.println("Number of Column : " + col);
        System.out.println("Columns Name: ");
        for (int i = 1; i <= col; i++) {
          String col_name = md.getColumnName(i);
          System.out.println(col_name);
        }
        con.close();
      catch (SQLException s) {
        System.out.println("SQL code does not execute.");
      }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
}

Directory structure of files:

In the lib folder place all required jar files ie. commons-collections.jar, commons-dbcp.jar, commons-pool.jar, j2ee.jar and mysql-connector-java-5.1.7-bin.jar

In the pathset.bat write following statement

set classpath=.;lib/commons-collections.jar;lib/commons-dbcp.jar;lib/commons-pool.jar;lib/j2ee.jar;lib/mysql-connector-java-5.1.7-bin.jar

Output:

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Posted on: April 3, 2010

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