File IO - how to read file (not contents)

Question

hello, i need to stream the file (everything, not just the contents) into a stream cipher in J2ME. the cipher (using BouncyCastle's API) has already been written, but i need to somehow stream the bytes of the file into it.
how do i do that?
and then, how do i pass in the decrypted stream into a media player to play the audio stream?

Answer 1

Hi Santosh,
I am using the Java code inside the BPEL. In BPEL by using the Java embedding activity, I am calling the java class code. Please follow the below steps to achieve this
1. Create a Java project in jdeveloper and write the java code to read and extract contents of a zip file.
2. Create a zip file for java code
3. To use the java code in your BPEL. Please copy the java code zip file in soa composite SCA-INF\lib folder location
4. Now by using the java embedding activity and some required java package call the required the java class in BPEL
<bpelx:exec import="java.io.File.*"/>
<bpelx:exec import="java.io.FileInputStream.*"/>
<bpelx:exec import="java.io.FileOutputStream.*"/>
<bpelx:exec import="java.io.IOException.*"/>
<bpelx:exec import="oracle.xml.parser.v2.XMLElement"/>
<bpelx:exec import="java.util.List.*"/>
<bpelx:exec import="java.util.ArrayList.*"/>
<bpelx:exec import="java.util.zip.ZipEntry.*"/>
<bpelx:exec import="java.util.zip.ZipInputStream.*"/>
<bpelx:exec import="java.util.zip.ZipOutputStream.*"/>
5.There is no need to register the java code zip file at Soa server
6. Use the following Java embeeding code
FileUnzip unZip = new FileUnzip();
String INPUT_ZIP_FILE = (String)getVariableData("INPUT_ZIP_FILE");
String OUTPUT_FOLDER = (String)getVariableData("OUTPUT_FOLDER");
unZip.unZipIt(INPUT_ZIP_FILE, OUTPUT_FOLDER);