Encoding and decoding of tables data
Hi,
I need to encode the values in the fields of the data base table and again i need to put the encoded data into that data base table back and i need to decode the data base table back.
Are there any fm's for this?
Please suggest me a approch of doing this.
Thanks in advance,
Radhika
Hi Francois,
I checked the methods in the class CL_HARD_WIRED_ENCRYPTOR.
But, in my case the ecrypted and decrypted data lengths should be same,
bcoz after encrypted that data should fit into that particular field of the same table.
I did not found any method for this case in the above class.
Thanks,
Radhika
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Best practice for encoding and decoding DUT/UUT registers? Class? Cluster? Strings? Bitbanging?
I am architectecting a LabVIEW system to charactarize silicon devices. I am trying to decide the best way to enqueue, encode, and decode device commands executed by my test system.
For example, a ADC or DAC device might come in both I2C and SPI flavors (same part, different interface) and have a large register map which can be represented as register names or the actual binrary value of it's address.
I would like my data structure to
*) be protocol agnostic
*) have the flexibility to program using either the memonics or hard coded addresses
*) be agnostic to the hardware which executes the command. (
*) I would like to enqueue mulitple commands in a row.
I am thinking a detailed class is my best bet, but are there are examples or best practices already established?I agree on the detailed class inherited from a general DUT-class. Especially if you want to mix interfaces you need to keep those as far away from your top vi as possible.
As to the 4th point i'd implement command-vi's as enque and have a in-class command-queue (or possibly just an array of commands).
/Y
LabVIEW 8.2 - 2014
"Only dead fish swim downstream" - "My life for Kudos!" - "Dumb people repeat old mistakes - smart ones create new ones."
G# - Free award winning reference based OOP for LV -
Encode and Decode 16 bit grayscale image to jpeg2000
i am trying to convert 10 bit grayscale raw image to jpeg 2000 using J2KImageWriter and i want it to convert back to grayscale raw image but when i am converting it it gives NULL.
Here is my code
public class Main {
public static void main(String[] args) {
if(args.length!=4)
System.out.println("\nEnter imagefile height width header\n");
System.exit(0);
String filename=args[0];
int height=Integer.parseInt(args[1]);
int width=Integer.parseInt(args[2]);
int header=Integer.parseInt(args[3]);
try
//reading the image data
FileInputStream imagefile=new FileInputStream(filename);
System.out.println("\nSize of image file:"+imagefile.available());
System.out.println("\nHeader:"+String.valueOf(header)+" bytes\n");
imagefile.skip(header);
short pixels[]=new short[height*width];
int i,j,k;
k=0;
for(i=0;i<height;i++)
for(j=0;j<width;j++)
int lsb=imagefile.read();
int msb=imagefile.read();
pixels[k]=(short)(msb<<8 | lsb);
k++;
//System.out.println(String.valueOf(pixels[i][j]));
imagefile.close();
DataBuffer buffer=new DataBufferUShort(pixels,width*height);
SampleModel sm=RasterFactory.createBandedSampleModel(DataBuffer.TYPE_USHORT,height,width,1);
Raster raster=RasterFactory.createWritableRaster(sm, buffer,new Point(0,0));
//imagedata reading complete
//conversion to jpeg 2000
String outfile=args[0].substring(0,args[0].lastIndexOf('.'))+".jp2";
File outimage=new File(outfile);
ImageOutputStream imout=ImageIO.createImageOutputStream(outimage);
J2KImageWriteParam j2kparam=new J2KImageWriteParam();
J2KImageWriterSpi spi=new J2KImageWriterSpi();
J2KImageWriter j2kwriter=new J2KImageWriter(spi);
j2kparam.setLossless(true);
j2kparam.setComponentTransformation(false);
j2kparam.setEncodingRate(0.5f);
j2kparam.setFilter(J2KImageWriteParam.FILTER_53);
j2kparam.setNumDecompositionLevels(3);
j2kparam.setWriteCodeStreamOnly(true);
j2kwriter.setOutput(imout);
j2kwriter.write(null,new IIOImage(raster,null,null),j2kparam);
imout.close();
J2KImageReaderSpi j2kspi=new J2KImageReaderSpi();
J2KImageReader j2kreader=new J2KImageReader(j2kspi);
ImageInputStream imin=ImageIO.createImageInputStream(outfile);
j2kreader.setInput(imin, true, false);
Raster decomp_raster=j2kreader.readRaster(1, null);
int outputdata[]=new int[width*height];
decomp_raster.getPixels(0,0,width,height,outputdata);
FileOutputStream fileout=new FileOutputStream("decomp");
for(i=0;i<height*width;i++)
short temp=(short)outputdata;
fileout.write(Short.valueOf(temp).byteValue());
Short a=new Short(Short.reverseBytes(temp));
fileout.write(a.byteValue());
fileout.close();
catch(Exception e)
System.out.println(e.getMessage());
Can anybody help me with this. Actually i need to study the performance of jpeg2000 compression using different setting of parameters.
Thanks in advance.......Hi,
I am able to encode and decode the image using J2Kwriter and J2Kreader classes. But now some other issue has came up.
When compressed losslessly, the new jpeg2000 filesize is 415245 bytes. (My original file is of size 2000000 bytes)
But when i am doing lossy compression, it results in following file sizes.
Below 0.5 (encoding rate) - 535 bytes.
Greater than or equal to 0.5 - 541 bytes.
I tried with the following values of encoding rate - 0.1, 0.3, 0.5, 0.8, 1, 1000, 100000000, 500000000.
I m not able to understand why i am getting the same filesize even with different encoding rate.
How should i set the encoding rate parameter to achieve my target compression ratio.
Kindly guide me. I will be very thankful to you.
Preeti -
Hi All,
I need to Encode and Decode Base64 File.
Please let me know if there is any Function Modules or Class Methods to achieve the requirement.
Thanks in advance.
Regards
Joseph
Message was edited by: Joseph BrownHi,
This is the encoded base64 file in XML format:
<?xml version="1.0" encoding="UTF-8"?>
<Z_CREFO_DOC>
<E_PDF><![CDATA[JVBERi0xLjMKJcfsj6IKNSAwIG9iago8PC9MZW5ndGggNiAwIFIvRmlsdGVyIC9GbGF0ZURlY29k
ZT4+CnN0cmVhbQp4nE2MPQ/CMAxEd/8Kj/aQEKehIWvFh8QElTfEVNFOGUr7/0UagcTd8vSkuxmd
FY9u6wGDLs4rRA1dhfvvCeYIaDbbZU8c9Dxk7LMGG50RGkWsHobExpj7F1NjhBzfCgG5tAR/Z0
5pYMN6Qs9OJACxuhlY0n5Kde4aRwL/0A6e4hnWVuZHN0cmVhbQplbmRvYmoKNiAwIG9iagoxMzEK
ZW5kb2JqCjQgMCBvYmoKPDwvVHlwZS9QYWdlL01lZGlhQm94IFswIDAgNTk1LjIyIDg0Ml0KL1Jv
dGF0ZSAwL1BhcmVudCAzIDAgUgovUmVzb3VyY2VzPDwvUHJvY1NldFsvUERGIC9UZXh0XQovRXh0
R1N0YXRlIDEwIDAgUgovRm9udCAxMSAwIFIKPj4KL0NvbnRlbnRzIDUgMCBSCj4+CmVuZG9iagoz
IDAgb2JqCjw8IC9UeXBlIC9QYWdlcyAvS2lkcyBbCjQgMCBSCl0gL0NvdW50IDEKL1JvdGF0ZSAw
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NyAwIFIPgplbmRvYmoKMTEgMCBvYmoKPDwvUjkKOSAwIFIPgplbmRvYmoKMTIgMCBvYmoKPDwv
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ELJSaEEbDfAj7llOmUiFnWbxs0Moxkm25FfRBN3ksuydaybPuxPyfvOe953yfneQ+BYkSIIAiJ
itOyprQivVati5TASCTxTxm8TYubJ3ZVvsJlQwIF6PJWIsiRlKjNHGwaOX4dYGuPISEhPE9J0n
uXqDzchVHzUzW4qLDm5NSUn97yRDqVQyFbZ/Mkwea+KqdczmSFDDavQGLaszZzO5kdsaDVfJVGts
hqMmRl1VxVZFy0rUGvYYk89pOINBX8Nsyd3KbE9Pz0iLLNuzmUKLljXqUxlOd4TTcWYbo9ZVMfu1
bLWa0aqr2GiDPC1nNtqYzHRO9291IaetsJiYtRczhXolU8AUsdUWjdr4/wxC6AU270C+yaxi0hDK
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Ilw+rpu1TbtCnjANYbL5rnPcGNROvjN0EB/CZTaWK6sw5GElLSgeZAH1y8M5QJcUwgKkynsXPp4K
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lY2ng0lS/jr2gf8CXI2if1Guih6Cd6Fy/KzHm/bWbyAZ3oHb4VnAzjr/Gl+mnDeOXlzLG0CPCx
4LWS3zf3OHEuvbqPwjuanXtctBVCPmp3h70ff0fzNTGypdGurlFImC97dduBQwJVW3i3az4Gxu
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iobeGuOHTguOP2IfvZ0E5/+gpDxgH//rJQK6lsXQtYLkq60Uft3h2Bn185mPUnbW90Vn0z1DAYn9
toAgoodJNTEroZJt5ATO0wOAxHwQQympZGvD0h5DZxHnrkBdB2m5LWDvIlg6AaJCfWLb440S2R
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MCAwIDAgMCAwIDAgMzMzIDAgMAowIDAgMCAwIDAgMCAwIDAgMCAwIDAgMCAwIDAgMCAwCjAgMCAw
IDAgNzIyIDAgNTU2IDAgMCAwIDAgMCAwIDAgMCAwCjU1NiAwIDAgMCA2MTEgMCAwIDAgMCAwIDAg
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aGFyU2V0KC9lL0QvUC9GL3MvdC9UL3NwYWNlL2h5cGhlbikvRm9udEZpbGUzIDEyIDAgUj4+CmVu
ZG9iagoyIDAgb2JqCjw8L1Byb2R1Y2VyKEdQTCBHaG9zdHNjcmlwdCA4LjE1KQovQ3JlYXRpb25E
YXRlKEQ6MjAwNjAzMjExMjExMTYpCi9Nb2REYXRlKEQ6MjAwNjAzMjExMjExMTYpCi9UaXRsZShN
aWNyb3NvZnQgV29yZCAtIERva3VtZW50MSkKL0NyZWF0b3IoUFNjcmlwdDUuZGxsIFZlcnNpb24g
NS4yKQovQXV0aG9yKG11ZWxsZXJoKT4+ZW5kb2JqCnhyZWYKMCAxNAowMDAwMDAwMDAwIDY1NTM1
IGYgCjAwMDAwMDA0NjYgMDAwMDAgbiAKMDAwMDAwMjM5OSAwMDAwMCBuIAowMDAwMDAwMzk4IDAw
MDAwIG4gCjAwMDAwMDAyMzUgMDAwMDAgbiAKMDAwMDAwMDAxNSAwMDAwMCBuIAowMDAwMDAwMjE2
IDAwMDAwIG4gCjAwMDAwMDA1MTQgMDAwMDAgbiAKMDAwMDAwMjE2MCAwMDAwMCBuIAowMDAwMDAx
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MDAwNjE1IDAwMDAwIG4gCjAwMDAwMDE3OTYgMDAwMDAgbiAKdHJhaWxlcgo8PCAvU2l6ZSAxNCAv
Um9vdCAxIDAgUiAvSW5mbyAyIDAgUgovSUQgWyityXEclVXSeoKdpGR5FFwppSkorclxHJVV0nqC
naRkeRRcKaUpXQo+PgpzdGFydHhyZWYKMjU5NgolJUVPRgo=]]>
</E_PDF>
<C_ERROR></C_ERROR>
</Z_CREFO_DOC>
Can i pass all these characters or i need to transform it first, extract the value of the element and decode? Finally i need to write the decoded outcome to a file (a pdf file) to the hard drive (may be with: OPEN DATASET P_DATASET FOR INPUT IN TEXT MODE ENCODING DEFAULT)
I saw this hint but I think there should be more to it (eg. transformation of the initial decoded xml file and the writing it to hard drive using the Open Dataset for Input...):
****************being of report *************************
DATA: z TYPE string,
encode TYPE string,
decode TYPE string .
DATA: obj TYPE REF TO cl_http_utility,
cref TYPE REF TO if_http_utility.
CREATE OBJECT : obj.
cref = obj.
z = 'what u have to encode'.
encode = obj->if_http_utility~encode_base64( z ) .
decode = obj->if_http_utility~decode_base64( encode ).
****************end of report ***************************
What do i need more to the above report -
Hi,
I have a requirement like to encode the image(anyone of type:-jpg.gif) byte Array and placed into XML file.
I can use this xml file as datasource in BIRT,decode the byte data and bind to Image.
so I need to encode and decode the Image with predefined Libraries,
Could anyone Help to me.
Thanks and Regards
Swetha.Get the name of the file.
Read the file as bytes
Encode the bytes as base64 string
Insert name into a XML element
Insert base64 into a XML element
Reverse to extract.
Image libraries have nothing to do with that process. -
Hi Experts,
My Oracle Version:
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - Production
PL/SQL Release 11.1.0.7.0 - Production
CORE 11.1.0.7.0 Production
TNS for 32-bit Windows: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - Production
5 rows selected.I got the requirement to check any URL encode and decode methods available in common for O racle and PHP,
Since URL will be encoded in database at the time of retreiving data from database but it will be decoded in PHP without db connection.
Hope my scenario will be clear to you, is any common function available in oracle and php for this process?but escape, unescape just adds %20 for empty space in the URLwell it does a bit more: it escapes all special characters that should not be in a URL, e.g.
SQL> select utl_url.escape('#^|%µ ') escaped_url from dual
ESCAPED_URL
%23%5E%7C%25%B5%20
1 row selected.Can you give an example of how you want a completely converted url, and why? -
Does xMII have encoding and decoding functuinality?
hello,
does xMII have encoding and decoding functionality in xMII application level?
or xMII does not have application level encoding and decoding and users just use SSL technology or network device level encode / decode technology when they want to have data communication security?
Sincerely, Shiroh Kinoshita - SAP JapanHello (Konnichiha) Vivek,
Thanks for your answer.
I understand those database level and server level authorization functionality. What I mean is :
I mean security for data leakage during data communication between something and xMII. does xMII have any encode and decode function during communication?
Sincerely, Shiroh Kinoshita -
Hi
I'm looking to compress (and decompress) some already short strings (think about the same amount of text as a search engine might show for a result).
One of the most effective ways of compressing short strings seems to be base 40 encoding as found in the accepted answer here: http://stackoverflow.com/questions/7389252/shorten-an-already-short-string-in-java
At least against my data, it seems to outperform LZF and Smaz.
However, I can't for the life of me figure out how to decode it. I've even found encode and decode implementations in C, but my C is woefully inadequate to derive the Java: http://www.drdobbs.com/embedded-systems/slimming-strings-with-custom-base-40-pac/229400732
To show willing, here's one of many attempts at writing a method to decode it:
public String unpack(byte[] input) { //FIXME: No workie.
ByteArrayInputStream bois = new ByteArrayInputStream(input);
DataInputStream dis = new DataInputStream(bois);
StringBuilder sb = new StringBuilder();
char a,b,c;
try {
while ((a = dis.readChar()) != '\0' && (b = dis.readChar()) != '\0' && (c = dis.readChar()) != '\0') {
sb.append(chars.charAt(a % 40));
sb.append(chars.charAt(b / 40 % 40));
sb.append(chars.charAt(c / 40 / 40));
} catch (IOException e) {
throw new AssertionError(e);
return sb.toString();
Could anyone help me out? Thanks in advance.Welcome to the forum!
>
Could anyone help me out? Thanks in advance.
>
Thanks for posting the code that you tried.
Problem #1 in your code is that you are not following the instructions from the author for decoding
>
Read each pair of bytes as a char ch. The first index is ch % 40, the second is ch / 40 % 40 and the last is ch / 40 / 40. Use chars to turn the index into a char. Note; I have swap the order in the code to make it simpler to decode. A 0 means you have reached the end.
>
You are reading three characters. Each pair of bytes represents THREE characters. You need to reach ONE character (one pair of bytes) and then break it up into three characters.
Problem #2 is in the author's code. There is no '0' at the end. The author's code does not add a zero at the end to indicate the end of the string. The author's code also shows that some byte arrays are an odd number of characters long. That means you CANNOT read each pair as there may be a single remaining byte.
Since you posted the code you were trying I was able to create code that works.
I created a decode method and call it from the main method and print out the decoded results.
import java.util.Arrays;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
class Encoder {
public static final int BASE = 40;
StringBuilder chars = new StringBuilder(BASE);
byte[] index = new byte[256];
{ chars.append('\0');
for (char ch = 'a'; ch <= 'z'; ch++) chars.append(ch);
for (char ch = '0'; ch <= '9'; ch++) chars.append(ch);
chars.append("-:.");
Arrays.fill(index, (byte) -1);
for (byte i = 0; i < chars.length(); i++)
index[chars.charAt(i)] = i;
public byte[] encode(String address) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
for (int i = 0; i < address.length(); i += 3) {
switch (Math.min(3, address.length() - i)) {
case 1: // last one.
byte b = index[address.charAt(i)];
dos.writeByte(b);
break;
case 2:
char ch = (char) ((index[address.charAt(i+1)]) * 40 + index[address.charAt(i)]);
dos.writeChar(ch);
break;
case 3:
char ch2 = (char) ((index[address.charAt(i+2)] * 40 + index[address.charAt(i + 1)]) * 40 + index[address.charAt(i)]);
dos.writeChar(ch2);
break;
return baos.toByteArray();
} catch (IOException e) {
throw new AssertionError(e);
public static void main(String[] args) {
Encoder encoder = new Encoder();
byte [] encodedBytes;
String decodedString;
for (String s : "twitter.com:2122,123.211.80.4:2122,my-domain.se:2121,www.stackoverflow.com:80".split(",")) {
encodedBytes = encoder.encode(s);
System.out.println(s + " (" + s.length() + " chars) encoded is " + encodedBytes.length + " bytes.");
decodedString = encoder.decode(encodedBytes);
System.out.println("Decoded String is [" + decodedString + "].");
public String decode(byte[] input) { //FIXME: No workie.
ByteArrayInputStream bois = new ByteArrayInputStream(input);
DataInputStream dis = new DataInputStream(bois);
StringBuilder sb = new StringBuilder();
char a,b,c;
int index;
try {
for (int i = 0; i < input.length / 2; i++) {
a = dis.readChar();
index = a % 40;
if (index == 0) break;
sb.append(chars.charAt(index));
index = a / 40 % 40;
if (index == 0) break;
sb.append(chars.charAt(index));
index = a / 40 / 40;
if (index == 0) break;
sb.append(chars.charAt(index));
if ((input.length % 2) != 0) {
index = dis.readByte();
if (index != 0) sb.append(chars.charAt(index));
} catch (IOException e) {
throw new AssertionError(e);
return sb.toString();
twitter.com:2122 (16 chars) encoded is 11 bytes.
Decoded String is [twitter.com:2122].
123.211.80.4:2122 (17 chars) encoded is 12 bytes.
Decoded String is [123.211.80.4:2122].
my-domain.se:2121 (17 chars) encoded is 12 bytes.
Decoded String is [my-domain.se:2121].
www.stackoverflow.com:80 (24 chars) encoded is 16 bytes.
Decoded String is [www.stackoverflow.com:80]. -
JPEG ENCODING AND DECODİNG WITH DCT TRANSFORMATION
I NEED A JAVA SOURCE CODE JPEG ENCODING AND DECODİNG WITH DCT TRANSFORMATION ALSO QUANTIZATION. IT IS URGENT BECAUSE I WILL USE IT IN MY PROJECT AND I AM NOT GOOD AT JAVA . PLEASE I AM WAITING YOUR HELPS. MY MAIL IS [email protected] thank you very much
I NEED A JAVA SOURCE CODE JPEG ENCODING AND DECOD�NG WITH DCT TRANSFORMATION ALSO QUANTIZATION. IT IS URGENT BECAUSE I WILL USE IT IN MY PROJECT AND I AM NOT GOOD AT JAVA . PLEASE I AM WAITING YOUR HELPS. MY MAIL IS [email protected] thank you very much
-
hello,
i am doing a voice-chat application.i badly need to reduce the size of the recording ,compress the audio.i have not been able to get a mixer which supports a-law or u-law encoded compression by default ;all mixers support the 16 bit PCM.please suggest a way to encode and decode in a-law or u-law.Please don't post in threads that are long dead and don't hijack other threads. When you have a question, start your own topic. Feel free to provide a link to an old post that may be relevant to your problem.
I'm locking this thread now. -
Hai,
Can i encode the URL rewriting and decode in next page.
example,
Qutation.jsp?atdmin_status=y";
in qutation.jsp can i decode that url for re using the request
But i want to show some text in URL .is it possible?plz give sample code
Regards,
john jayarajHi,
I am able to encode and decode the image using J2Kwriter and J2Kreader classes. But now some other issue has came up.
When compressed losslessly, the new jpeg2000 filesize is 415245 bytes. (My original file is of size 2000000 bytes)
But when i am doing lossy compression, it results in following file sizes.
Below 0.5 (encoding rate) - 535 bytes.
Greater than or equal to 0.5 - 541 bytes.
I tried with the following values of encoding rate - 0.1, 0.3, 0.5, 0.8, 1, 1000, 100000000, 500000000.
I m not able to understand why i am getting the same filesize even with different encoding rate.
How should i set the encoding rate parameter to achieve my target compression ratio.
Kindly guide me. I will be very thankful to you.
Preeti -
QT SDK. Use encoder and decoder simultaneously
We develop a software for video conversion. When we tried to convert QT DV to QT DV with different settings the SDK don't work properly. I guess that some conflict occurs when we use encoder and decoder simultaneously.
Is is known bug? Is there any workaround?http://jakarta.apache.org/commons/codec/
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What encoder and decoder recommend in Yosemite?
I use iTunes and VLC to play all the Videos as usual.. So what encoder and decoder do you recommend better in Yosemite?
None.
OS X includes most that you need and VLC can handle what it can't. -
Hi,
I am in need of a standard Java API from either sun's implementation or from SAP's implementation to perform Base64 encoding and decoding...
Can someone please provide me the links to get the same ?
Thanks & Regards,
Gurushant S.HHi Gurushant,
first, welcome on SDN forums!
About your question: See SAP's Base64 secKey encoding
Hope it helps
Detlev
PS: Please consider rewarding points for helpful answers on SDN. Thanks in advance! -
URL Encoding and Decoding in OSB
Hi,
Do we have out-of-box solution in OSB to decode XML which is URL encoded and encode XML to URL encoding. If so how can I do it.
This might be basic question. I am unable to figure out. new to OSB.
Thanks
Sham.Hi Sham,
Probably these are what you looking for...
fn-bea:inlinedXML()
fn-bea:serialize()
fn-bea:serialize() to represent an XML document as a string
fn-bea:inlinedXML() to parses textual XML and returns an instance of the XQuery 1.0 Data Model.
Supported Function Extensions from Oracle
http://docs.oracle.com/cd/E23943_01/admin.1111/e15867/xquery.htm#i1101407
Oracle’s XQuery Implementation
http://docs.oracle.com/cd/E13162_01/odsi/docs10gr3/xquery/extensions.html
Cheers,
Vlad
It is considered good etiquette to reward answerers with points (as "helpful" - 5 pts - or "correct" - 10pts)
https://forums.oracle.com/forums/ann.jspa?annID=893
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