Trying to publish a java object to PL/SQL

Question

Im really new to java and I've been trying to figure this out all day. Can someone PLEASE help me? Im trying to publish a java class I found off the internet to PL/SQL. I Can't seem to get the wrapper right... what am I doing wrong? The class is posted below and all the words bolded is what i've tried so far.. everything seems right for me, as I've done this the same way with a few other java objects..
CREATE OR REPLACE AND COMPILE JAVA SOURCE NAMED "unzip" AS
import java.io.*;
import java.util.*;
import java.util.zip.*;
class unzip
public static void Unzip_File(String args[])
if(args.length < 1)
System.out.println("Syntax : unzip zip-file destination-dir[optional]");
return;
try
ZipFile zf = new ZipFile(args[0]);
Enumeration zipEnum = zf.entries();
String dir = new String(".");
if( args.length == 2 )
dir = args[1].replace('\\', '/');
if(dir.charAt(dir.length()-1) != '/')
dir += "/";
while( zipEnum.hasMoreElements() )
ZipEntry item = (ZipEntry) zipEnum.nextElement();
if( item.isDirectory() ) //Directory
File newdir = new File( dir + item.getName() );
System.out.print("Creating directory "+newdir+"..");
newdir.mkdir();
System.out.println("Done!");
else //File
String newfile = dir + item.getName();
System.out.print("Writing "+newfile+"..");
InputStream is = zf.getInputStream(item);
FileOutputStream fos = new FileOutputStream(newfile);
int ch;
while( (ch = is.read()) != -1 )
fos.write(ch);
is.close();
fos.close();
System.out.println("Done!");
zf.close();
catch(Exception e)
System.err.println(e);
SQL> CREATE OR REPLACE PROCEDURE UNZIP_FILE (
2 P_Z_FILE VARCHAR2,
3 P_Z_FILE_NAME VARCHAR2) AS LANGUAGE JAVA
4 NAME 'unzip.Unzip_File()';
5 /
Procedure created.
SQL> exec unzip_file('D:\Empower\Dev\ACH\ACH_DNLD\RESPONSE.zip', 'D:\Empower\Dev\ACH\ACH_DNLD\ACH_PR
OCESS');
BEGIN unzip_file('D:\Empower\Dev\ACH\ACH_DNLD\RESPONSE.zip', 'D:\Empower\Dev\ACH\ACH_DNLD\ACH_PROCES
ERROR at line 1:
ORA-29531: no method Unzip_File in class unzip
ORA-06512: at "LOANADMIN.UNZIP_FILE", line 0
ORA-06512: at line 1
SQL> ed
Wrote file afiedt.buf
1 CREATE OR REPLACE PROCEDURE UNZIP_FILE (
2 P_Z_FILE VARCHAR2,
3 P_Z_FILE_NAME VARCHAR2) AS LANGUAGE JAVA
4* NAME 'unzip.Unzip_File(java.lang.String,java.lang.String)';
SQL> /
Procedure created.
SQL> exec unzip_file('D:\Empower\Dev\ACH\ACH_DNLD\RESPONSE.zip', 'D:\Empower\Dev\ACH\ACH_DNLD\ACH_PR
OCESS');
BEGIN unzip_file('D:\Empower\Dev\ACH\ACH_DNLD\RESPONSE.zip', 'D:\Empower\Dev\ACH\ACH_DNLD\ACH_PROCES
ERROR at line 1:
ORA-29531: no method Unzip_File in class unzip
ORA-06512: at "LOANADMIN.UNZIP_FILE", line 0
ORA-06512: at line 1
any help would be great. Thanks in advance :)

Answer 1

There are a substantial number of Java demos, and sample code, under $ORACLE_HOME.