1）建立JDeveloper工作区与项目
2）建立TestConnection.java文件
//取得Oracle9i数据库连接信息
import java.sql.*;
public class TestConnection
{
  public static void main(String args[]) throws SQLException
  {
    //注册Oracle JDBC驱动程序
    DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
    //建立新数据库连接
    Connection conn=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:myoracle","scott","tiger");
    //取得连接数据
    DatabaseMetaData md=conn.getMetaData();
    System.out.println("数据库版本");
    System.out.println("--------------------------");
    System.out.println(md.getDatabaseProductVersion());
    System.out.println();
    System.out.println("驱动程序名称与版本");
    System.out.println("---------------------------");
    System.out.println(md.getDriverName()+" "+md.getDriverVersion());
    //关闭数据库连接
    conn.close();
  }
}
3）编译会出现编译错误cannot access class oracle.jdbc.driver.oracleDriver.
4）设置项目的函数库：Project->Project Setting,在Libraries节点选择JDeveloper Runtime和Oracle JDBC两个库。
5）执行结果
Waiting for profiler UI on port 18988
Profiler UI connected ...
数据库版本

--------------------------

Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production

驱动程序名称与版本

---------------------------

Oracle JDBC driver 9.0.1.5.0