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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>初始化连接池</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 3 页（共4 页）</nobr></font></td>
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<p>
在这个示例中，我们使用 mSQL 数据库和开放源代码 mSQL JDBC 驱动程序来创建 <code>PooledDataSource</code>。所有与数据库相关的代码都包含在初始化或绑定过程中。</p>
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
// First we import the relevant package

import com.imaginary.sql.msql.* ;
import java.util.Hashtable ;
import javax.naming.* ;

public class InitializeJNDI {

  private String serverName = "localhost" ;
  private String databaseName = "jdbc" ;
  private String userName = "java" ;
  private String password = "sun" ;

  // The appropriate JNDI subcontext for PooledDataSources is jdbcpool

  private String filePath = "jdbcPool/pjtutorial" ;

  private int portNumber = 1114 ;
  private int poolSize= 10 ; // We want to create a pool with 10 connections.

  public InitializeJNDI() {
    Hashtable env = new Hashtable();
    env.put(Context.INITIAL_CONTEXT_FACTORY, 
	    "com.sun.jndi.fscontext.RefFSContextFactory");

    try {

      Context ctx = new InitialContext(env);
      
      // Create the PooledDataSource and set the relevant parameters.

      MsqlPooledDataSource ds = new MsqlPooledDataSource() ;

      ds.setServerName(serverName) ;
      ds.setPort(portNumber) ;
      ds.setDatabaseName(databaseName) ;
      ds.setUser(userName) ;
      ds.setPassword(password) ;
      ds.setMaxPoolSize(poolSize) ;

      // Bind the name and the DataSource object together

      ctx.bind(filePath, ds) ;
      ctx.close() ;
      
    } catch (Exception ex) {
      System.err.println("ERROR: " + ex.getMessage()) ;
    }
    
  }
  
  public static void main (String args[]){    
    new InitializeJNDI() ;
  }
}

</code>
</pre>
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