oracle如何使用java source调用外部程序

create or replace and compile java source named jv_run_extpro as import java.io.*; import java.lang.*; import java.util.*; import java.sql.*; import oracle.sql.*; publicclass jv_run_extpro { publicstaticvoid run(String cmd) throws IOException { Process p=Runtime.getRuntime().exec(cmd); StreamGobbler errorGobbler = new StreamGobbler(p.getErrorStream(), "Error"); StreamGobbler outputGobbler = new StreamGobbler(p.getInputStream(), "Output"); errorGobbler.start(); outputGobbler.start(); try{ p.waitFor(); } catch(InterruptedException ie) { System.out.println(ie); } } publicstaticclass StreamGobbler extends Thread {  InputStream is; String type; public StreamGobbler(InputStream is, String type) { this.is = is; this.type = type; }  publicvoid run() { try { InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); String line = null; while ((line = br.readLine()) != null) { if (type.equals("Error")) { System.out.println("Error :" + line); } else { System.out.println("Debug:" + line); } } } catch (IOException ioe) { ioe.printStackTrace(); } } } }  

begin pro_jv_run_extpro('sqluldr264.exe scott/hh@pdborcl query="select * from emp" field=, head=yes file=D:/Desktop/tmp/sqluldr2/OUT2.TXT'); pro_jv_run_extpro('"D:/Program Files/WinRAR/Rar.exe" a -ep -df "D:/Desktop/tmp/sqluldr2/20160916.rar" "D:/Desktop/tmp/sqluldr2/OUT2.TXT"'); end;