How can I make this Java class work

[ruchir123]

Hello,

I have written following java class but it is not compiling. I am new to java and that is why I am here on this forum.

Basically I need to create a parent child relation between two class here

The cyberBatch class wraps around the SSLFileTransfer class. In other words former is the parent of later.

Thanks,R

package oracle.apps.fnd.cp.request;
 
import oracle.apps.fnd.util.*;
import oracle.apps.fnd.cp.request.*;
import java.io.BufferedReader;
import java.io.IOException;
import javax.net.ssl.SSLSocketFactory;
 
 
public class cyberBatch implements JavaConcurrentProgram {
 
    // Optionally provide class constructor without any arguments.
    // If you provide any arguments to the class constructor then while running the program will fail.
 
 
    public void runProgram(CpContext pCpContext) {
        ReqCompletion lRC = pCpContext.getReqCompletion();
        String CompletionText = "";
    
 
    // This class is to upload files but can be expanded to download files also.
 
    public class SSLFileTransfer {
 
        Properties props =
            new Properties(); // stores properties from property file
 
        /*
   * SSLFileTransfer(): constructor
   */
 
        public SSLFileTransfer() {
        }
 
        /*
   * init(): initialization (load property file)
   *
	 * @param propsFile		properties needed for file transfer
   */
 
        public void init(String propsFile) {
            try {
                props.load(new BufferedInputStream(new FileInputStream(new File(propsFile))));
            } catch (Exception e) {
                e.printStackTrace();
                System.exit(-1);
            }
        }
 
        /*
   * usage()
   */
 
        public static void usage() {
            System.out.println("USAGE: java SSLFileTransfer <full path property file name>");
            System.exit(-1);
        }
 
        /*
   * getFactory(): get factory for authentication
   *
	 * @throws IOException	if exception occurs
   */
 
        private SSLSocketFactory getFactory() throws IOException {
            try {
                SSLContext ctx;
                KeyManagerFactory kmf;
                KeyStore ks, ks1;
                char[] passphrase =
                    props.getProperty("passPhrase").toCharArray();
 
                ctx = SSLContext.getInstance("TLS");
                kmf = KeyManagerFactory.getInstance("SunX509");
                ks = KeyStore.getInstance("PKCS12", "BC");
                ks1 = KeyStore.getInstance("JKS");
 
                ks.load(new FileInputStream(props.getProperty("key")),
                        passphrase);
                ks1.load(new FileInputStream(props.getProperty("keyStore")),
                         passphrase);
 
                kmf.init(ks, passphrase);
                TrustManagerFactory tmf =
                    TrustManagerFactory.getInstance("SunX509");
                tmf.init(ks1);
                ctx.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
 
                return ctx.getSocketFactory();
            } catch (Exception e) {
                e.printStackTrace();
                throw new IOException(e.getMessage());
            }
        }
 
        /*
   * getHost(): Get host from property file
   */
 
        private String getHost() {
            return props.getProperty("host", "localhost");
        }
 
        /*
   * getPort(): Get port from property file
   */
 
        private int getPort() {
            return Integer.parseInt(props.getProperty("port"));
        }
 
        /*
   * sendRequest(): Send request (file) to the server
   *
	 * @param out		stream to send the data to the server
	 *
	 * @throws Exception	if an error occurs.
   */
 
        private void sendRequest(PrintWriter out) throws Exception {
            String path = props.getProperty("path");
 
            out.println("POST " + path + " HTTP/1.0");
 
            final String BOUNDARY = "7d03135102b8";
            out.println("Content-Type: multipart/form-data; boundary=" +
                        BOUNDARY);
 
            String uploadFile = props.getProperty("uploadFile");
            String authString =
                props.getProperty("bcUserName") + ":" + props.getProperty("bcPassword");
            String encodedAuthString =
                "Basic " + new sun.misc.BASE64Encoder().encode(authString.getBytes());
            out.println("Authorization: " + encodedAuthString);
 
            final String CRLF = "\r\n";
            StringBuffer sbuf = new StringBuffer();
            sbuf.append("--" + BOUNDARY + CRLF);
            sbuf.append("Content-Disposition: form-data; name=\"upfile\"; filename=\"" +
                        uploadFile + "\"" + CRLF);
            sbuf.append("Content-Type: text/plain" + CRLF + CRLF);
 
 
            FileReader fi = new FileReader(uploadFile);
            char[] buf = new char[1024000];
            int cnt = fi.read(buf);
            sbuf.append(buf, 0, cnt);
            sbuf.append(CRLF);
            sbuf.append("--" + BOUNDARY + "--" + CRLF);
 
            int sz = sbuf.length();
            out.println("Content-Length: " + sz);
 
            out.println();
            out.println(sbuf);
            out.flush();
 
            // Make sure there were no surprises
            if (out.checkError())
                System.out.println("SSLFileTransfer: java.io.PrintWriter error");
 
        }
 
        /*
   * readResponse(): reads response from the server
   *
	 * @param in		stream to get the data from the server
	 *
	 * @throws Exception	if an error occurs.
   */
 
        private void readResponse(BufferedReader in) throws Exception {
            boolean successful = false;
            String inputLine;
            while ((inputLine = in.readLine()) != null) {
                if (inputLine.startsWith("HTTP") &&
                    inputLine.indexOf("200") >= 0)
                    successful = true;
                System.out.println(inputLine);
            }
 
            System.out.println("UPLOAD FILE " +
                               (successful ? "SUCCESSFUL" : "FAILED") +
                               "!!!\n");
        }
 
        /*
   * upload(): upload file to server
   *
	 * @throws Exception	if an error occurs.
   */
 
        public void upload() throws Exception {
            try {
                SSLSocketFactory factory = getFactory();
                SSLSocket socket =
                    (SSLSocket)factory.createSocket(getHost(), getPort());
 
                PrintWriter out =
                    new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())));
                BufferedReader in =
                    new BufferedReader(new InputStreamReader(socket.getInputStream()));
 
                socket.startHandshake();
                sendRequest(out);
                readResponse(in);
 
                out.close();
                in.close();
                socket.close();
            } catch (Exception e) {
                e.printStackTrace();
                throw e;
            }
        }
 
        /*
   * main(): main method to start file transfer
   *
	 * @param args		command line arguments (property file, see usage())
   *
	 * @throws Exception	if an error occurs.
   */
 
        public static void main(String[] args) throws Exception {
            if (args == null || args.length != 1)
                usage();
 
            SSLFileTransfer fileXfer = new SSLFileTransfer();
            fileXfer.init(args[0]);
            fileXfer.upload();
        }
    }
    lRC.setCompletion(ReqCompletion.NORMAL,CompletionText) ;
}
}

[pbrockway2]

Cross posted with more contextual info at OTN.

The Oracle paper referenced seems to be this one: How-to - Java Concurrent Programs (Oracle BI Publisher Blog).

@OP: that paper talks about implementing the JavaConcurrentProgram interface: nothing about parent classes, and nothing about wrapping. If you are new to Java you might benefit from starting with a tutorial to aquaint you with its syntax, and also conceptual notions like how types are related.

Your compiler problem is that you declare a local class (that is the name for the particular type of wrapping you attempt here), but attempt to make it public which you can't do in Java. However I fear that knowing that will be of little value unless you take the time to master Java syntax and usage.

[gcalvin]

You can't have a public class nested within a public class. You need to remove the public keyword from your SSLFileTransfer class declaration.

It's not clear why you're nesting classes, and I would suggest that maybe you don't need to. You should be able to have your two classes side-by-side, and simply instantiate an SSLFileTransfer object in your CyberBatch class.

// package oracle.apps.fnd.cp.request; // choose a better package name -- you are not Oracle
package com.yourcompany.yourproject;

import oracle.apps.fnd.util.*;
import oracle.apps.fnd.cp.request.*;

// start your class name with a capital letter
public class CyberBatch implements JavaConcurrentProgram {
    private SSLFileTransfer sslFileTransfer = new SSLFileTransfer();

   public void runProgram(CpContext pCpContext) 
   { 
        ReqCompletion lRC = pCpContext.getReqCompletion(); 
        String CompletionText = ""; 

        sslFileTransfer.init(propsfileName);
        sslFileTransfer.sendRequest(...);
        sslFileTransfer.readResponse(...);
  
    } 
}

This is not complete, as I am not familiar with either JavaConcurrentProgram or SSLFileTransfer classes, but it's the basic idea. I'm pretty sure you're following along from this page:

How-to - Java Concurrent Programs (Oracle BI Publisher Blog)

...and I'm guessing you were a little confused by "Code your program logic here."

Looks like pbrockway2 has responded in the meantime, so heed his advice too.

-Gary-