1.安装好db2数据库，并建立表如下：

2.eclipse或myeclipse中建立工程并导入java连接db2所需要的jar包db2java.jar 下载地址：http://download.csdn.net/detail/whzhaochao/6414981

3.建立iConn接口，代码如下：

package com.zhaochao.dba;

import java.sql.Connection;

public interface iConn {

Connection getConn();

}

4.建立连接db2类实现iConn接口，代码如下：

注意修改数据库名，用户名和密码

package com.zhaochao.dba;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

public class DB2Conn implements iConn {

private static final String DBDRIVER = "COM.ibm.db2.jdbc.app.DB2Driver" ;

private static final String DBURL = "jdbc:db2:zhaochao" ;

private static final String DBUSER = "" ;

private static final String DBPASS = "";

private Connection conn=null;

@Override

public Connection getConn() {

// TODO Auto-generated method stub

try {

Class.forName(DBDRIVER);

} catch (Exception e) {

// TODO Auto-generated catch block

System.out.println("Driver");

e.printStackTrace();

}

try {

this.conn=DriverManager.getConnection(DBURL, DBUSER, DBPASS);

} catch (SQLException e) {

// TODO Auto-generated catch block

System.out.println("getDriver failed!");

e.printStackTrace();

}

return conn;

}

}

5.测试连接

package com.zhaochao.dba;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

public class Test {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

//TestMySQL();

//TestOracle();

TestDB2();

//TestSQLServer();

//TestAccess();

}

private static void TestDB2() {

Connection conn=null;

PreparedStatement ps=null;

ResultSet rs=null;

iConn iconn=new DB2Conn();

conn=iconn.getConn();

String sql="select * from person";

try {

ps=conn.prepareStatement(sql);

rs=ps.executeQuery();

while(rs.next()){

System.out.println(rs.getString(1)+"|"+rs.getString(2)+"|"+rs.getString(3));

}

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}finally{

if(conn!=null){

try {

conn.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

if(ps!=null){

try {

ps.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

if(rs!=null){

try {

rs.close();

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

}

6，测试结果：

Tom|18|USA

Jim|20|USA