连接数据库的工具类：

import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class JDBCUtils {    private static String driver = "oracle.jdbc.OracleDriver";    private static String url = "jdbc:oracle:thin:@192.168.56.101:1521:orcl";    private static String user = "scott";    private static String password = "tiger";    
    static{        try {
            Class.forName(driver);
        } catch (ClassNotFoundException e) {            throw new ExceptionInInitializerError(e);
        }
    }    public static Connection getConnection(){        try {            return DriverManager.getConnection(url, user, password);
        } catch (SQLException e) {
            e.printStackTrace();
        }        return null;
    }  
    public static void release(Connection conn,Statement st,ResultSet rs){        if(rs != null){            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }finally{
                rs = null;   //----> Java GC            }
        }        if(st != null){            try {
                st.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }finally{
                st = null;
            }
        }        if(conn != null){            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }finally{
                conn = null;
            }
        }
    }
}

调用存储过程和函数的JAVA代码：

import java.sql.CallableStatement;import java.sql.Connection;import java.sql.ResultSet;import oracle.jdbc.OracleCallableStatement;import oracle.jdbc.OracleTypes;import org.junit.Test;import JDBCUtils;public class TestOracle {/*
 * create or replace procedure queryEmpInfo(eno in number,
                                         pename out varchar2,
                                         psal   out number,
                                         pjob   out varchar2) */
    @Test    public void testProcedure(){        //{call[(,, ...)]}
        String sql = "{call queryEmpInfo(?,?,?,?)}";
        Connection conn = null;
        CallableStatement call = null;        try {
            conn = JDBCUtils.getConnection();
            call = conn.prepareCall(sql);            
            //对于in参数，赋值
            call.setInt(1, 7839);            
            //对于out参数，申明
            call.registerOutParameter(2, OracleTypes.VARCHAR);
            call.registerOutParameter(3, OracleTypes.NUMBER);
            call.registerOutParameter(4, OracleTypes.VARCHAR);            
            //执行            call.execute();            
            //取出结果
            String name = call.getString(2);            double sal = call.getDouble(3);
            String job = call.getString(4);
            System.out.println(name+"\t"+sal+"\t"+job);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            JDBCUtils.release(conn, call, null);
        }
    }    
/*
 * create or replace function queryEmpIncome(eno in number)
return number */
    @Test    public void testFunction(){        //{?= call[(,, ...)]}
        String sql = "{?=call queryEmpIncome(?)}";
        
        Connection conn = null;
        CallableStatement call = null;        try {
            conn = JDBCUtils.getConnection();
            call = conn.prepareCall(sql);            
            //对于out参数，申明
            call.registerOutParameter(1, OracleTypes.NUMBER);            
            //对于in参数，赋值
            call.setInt(2, 7839);            //执行            call.execute();            
            //取出结果
            double income = call.getDouble(1);
            System.out.println(income);
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            JDBCUtils.release(conn, call, null);
        }        
    }/*查询某个部门中所有员工的所有信息
包头
CREATE OR REPLACE PACKAGE MYPACKAGE AS 
  type empcursor is ref cursor;
  procedure queryEmpList(dno in number,empList out empcursor);
END MYPACKAGE;

包体
CREATE OR REPLACE PACKAGE BODY MYPACKAGE AS
  procedure queryEmpList(dno in number,empList out empcursor) AS
  BEGIN
    open empList for select * from emp where deptno=dno;  
  END queryEmpList;
END MYPACKAGE;*/
    @Test    public void testCursor(){
        String sql = "{call MYPACKAGE.queryEmpList(?,?)}";
        
        Connection conn = null;
        CallableStatement call = null;
        ResultSet rs = null;        try {
            conn = JDBCUtils.getConnection();
            call = conn.prepareCall(sql);    
            
            call.setInt(1, 20);
            call.registerOutParameter(2, OracleTypes.CURSOR);
            call.execute();            
            //取出集合
            rs = ((OracleCallableStatement)call).getCursor(2);            while(rs.next()){
                String name = rs.getString("ename");                double sal = rs.getDouble("sal");
                System.out.println(name+"\t"+sal);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            JDBCUtils.release(conn, call, rs);
        }    
    }
}