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Java extract .cab files

I want to extract files from a .cab file and save them. I could not find any useful information on other questions and on GitHub there is no documentation.
For now I can iterate through all entries (2 text files) with CAB Parser but I cannot find a good way to save them and would appreciate some hints.
File inputFile = new File(inputPath);
File outputPath = new File(inputFile.getParentFile().getAbsolutePath());
final InputStream is = new FileInputStream(inputFile);
CabParser cabParser = new CabParser(is, inputPath);
Arrays.stream(cabParser.files).forEach(element -> {
CabFileEntry cabFile = element;
});
Thanks a lot!

This seems to work with simple.cab:
final InputStream is = new FileInputStream("/tmp/simple.cab");
CabParser cabParser = new CabParser(is, new File("/tmp/simple/"));
cabParser.extractStream();
However, it fails with VC_RED.cab.
CabParser README.md:
extract files from within a .cab which are compressed via the LZX compression algorithm
Maybe not all the possible compression algorithms are supported by this library.
One option is to run cabextract with Runtime.exec(...).

java.net.malformedURL exception

URL stringfile = getXsl("test.xml");
File originFile = new File(stringfile.getFile());
String xml = null;
ByteArrayOutputStream pdfStream = null;
try {
FileInputStream fis = new FileInputStream(originFile);
int length = fis.available();
byte[] readData = new byte[length];
fis.read(readData);
xml = (new String(readData)).trim();
fis.close();
xml = xml.substring(xml.lastIndexOf("<HttpCommandList>")+17, xml.lastIndexOf("</HttpCommandList>"));
String[] splitxml = xml.split("</HttpCommand>");
for (int i = 0; i < splitxml.length; i++) {
tmpxml = splitxml[i].trim() + "</HttpCommand>";
System.out.println("splitxml:" +tmpxml);
pdfStream = new ByteArrayOutputStream();
pdf = new com.lowagie.text.Document();
PdfWriter.getInstance(pdf, pdfStream);
pdf.open();
URL xslToUse = getXsl("test.xsl");
// Here am using some utility class to transform
// generate the XML needed by iText to generate the PDF using MessageBuffer contents
String iTextXml = XmlUtil.transformXml(tmpxml.toString(), xslToUse).trim();
// generate the PDF document by parsing the specified XML file
XmlParser.parse(pdf, new ByteArrayInputStream(iTextXml.getBytes()));
}
For the above code, during the XmlParser am getting java.net.malformedURL exception : no protocol
Am trying to generate the pdf document by parsing the specified xml file.

We could need the actual xml-file to decide what is missing. I expect, that there is no protocol defined, just like this:
192.168.1.2/ (no protocol)
file://192.168.1.2/ (there is one)
And URL seems to need one.
Also try:
new File("somexsl.xlt").toURI().toURL();
See here and here.
It always helps spoilering the complete stacktrace. No one knows, where the exception actually occured, if you dont post the line numbers.

How do I make my program find the record store?

I've just started out with J2ME and record stores. This seems to be the proper way to open a record store named "foo", not creating a new one:
RecordStore.openRecordStore("foo", false)
Fine, I get that. But where do I put the actual file for my program to find it? I'm using NetBeans 7.1.2.

you don't need to know where the file is, J2Me put the file somewhere, if the store already exists, you can open it, or use true in the open method to create it if it doesn't exist.
RecordStore rs = RecordStore.openRecordStore("foo", true);
to write to your recordstore, use this :
String s = "your-data";
byte[] rec = s.getBytes();
rs.addRecord(rec, 0, rec.length);
to read :
RecordEnumeration re = rs.enumerateRecords(null, null, false);
while (re.hasNextElement()){
String s = new String(re.nextRecord());
}
and close your recordStore after each operation:
rs.closeRecordStore();
update
how do I read the contents of the file?
read your existing file as a normal file with :
InputStream is = getClass().getResourceAsStream("/res/foo");
StringBuffer sb = new StringBuffer();
int chars;
while ((chars = is.read()) != -1)
sb.append((char) chars);
String str = new String(String.valueOf(sb).getBytes("UTF-8"));
and write the string to your recordStore with the code above.

How to extract images from Thumbs.db in Java?

HI
I read about POI project and tried to extract images from thumbs.db but getting exception in code .. Code os
InputStream stream = new FileInputStream("C:\\Thumbs.db");
POIFSFileSystem fs = new POIFSFileSystem(stream);
DirectoryEntry root = fs.getRoot();
Entry entry = root.getEntry("2");
DocumentInputStream is = fs.createDocumentInputStream(entry.getName());
JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(is);
JPEGDecodeParam param = JPEGCodec.getDefaultJPEGEncodeParam(4, JPEGDecodeParam.COLOR_ID_RGBA);
decoder.setJPEGDecodeParam(param);
BufferedImage originalBufferedImage = decoder.decodeAsBufferedImage();
Getting exception as "com.sun.image.codec.jpeg.ImageFormatException: Not a JPEG file: starts with 0x0c 0x00"
What is problem with above case ?
Can you suggest some other way to do above task ?

You need to read the header of the Thumbs.db file before you can start extracting the images. Try with the changes I added below, it should remove the ImageFormatException you are getting.
InputStream stream = new FileInputStream("C:\\Thumbs.db");
POIFSFileSystem fs = new POIFSFileSystem(stream);
DirectoryEntry root = fs.getRoot();
Entry entry = root.getEntry("2");
DocumentInputStream is = fs.createDocumentInputStream(entry.getName());
//Added to read the header lines and fix the ImageFormatException
int header_len = is.read();
for (int i = 1; i < header_len; i++) {
is.read();
}
JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(is);
JPEGDecodeParam param = JPEGCodec.getDefaultJPEGEncodeParam(4,JPEGDecodeParam.COLOR_ID_RGBA);
decoder.setJPEGDecodeParam(param);
BufferedImage originalBufferedImage = decoder.decodeAsBufferedImage();
I hope that helps!

Open Microsoft Word in Java

I'm trying to open MS Word 2003 document in java, search for a specified String and replace it with a new String. I use APACHE POI to do that. My code is like the following one:
public void searchAndReplace(String inputFilename, String outputFilename,
HashMap<String, String> replacements) {
File outputFile = null;
File inputFile = null;
FileInputStream fileIStream = null;
FileOutputStream fileOStream = null;
BufferedInputStream bufIStream = null;
BufferedOutputStream bufOStream = null;
POIFSFileSystem fileSystem = null;
HWPFDocument document = null;
Range docRange = null;
Paragraph paragraph = null;
CharacterRun charRun = null;
Set<String> keySet = null;
Iterator<String> keySetIterator = null;
int numParagraphs = 0;
int numCharRuns = 0;
String text = null;
String key = null;
String value = null;
try {
// Create an instance of the POIFSFileSystem class and
// attach it to the Word document using an InputStream.
inputFile = new File(inputFilename);
fileIStream = new FileInputStream(inputFile);
bufIStream = new BufferedInputStream(fileIStream);
fileSystem = new POIFSFileSystem(bufIStream);
document = new HWPFDocument(fileSystem);
docRange = document.getRange();
numParagraphs = docRange.numParagraphs();
keySet = replacements.keySet();
for (int i = 0; i < numParagraphs; i++) {
paragraph = docRange.getParagraph(i);
text = paragraph.text();
numCharRuns = paragraph.numCharacterRuns();
for (int j = 0; j < numCharRuns; j++) {
charRun = paragraph.getCharacterRun(j);
text = charRun.text();
System.out.println("Character Run text: " + text);
keySetIterator = keySet.iterator();
while (keySetIterator.hasNext()) {
key = keySetIterator.next();
if (text.contains(key)) {
value = replacements.get(key);
charRun.replaceText(key, value);
docRange = document.getRange();
paragraph = docRange.getParagraph(i);
charRun = paragraph.getCharacterRun(j);
text = charRun.text();
}
}
}
}
bufIStream.close();
bufIStream = null;
outputFile = new File(outputFilename);
fileOStream = new FileOutputStream(outputFile);
bufOStream = new BufferedOutputStream(fileOStream);
document.write(bufOStream);
} catch (Exception ex) {
System.out.println("Caught an: " + ex.getClass().getName());
System.out.println("Message: " + ex.getMessage());
System.out.println("Stacktrace follows.............");
ex.printStackTrace(System.out);
}
}
I call this function with following arguments:
HashMap<String, String> replacements = new HashMap<String, String>();
replacements.put("AAA", "BBB");
searchAndReplace("C:/Test.doc", "C:/Test1.doc", replacements);
When the Test.doc file contains a simple line like this : "AAA EEE", it works successfully, but when i use a complicated file it will read the content successfully and generate the Test1.doc file but when I try to open it, it will give me the following error:
Word unable to read this document. It may be corrupt.
Try one or more of the following:
* Open and repair the file.
* Open the file with Text Recovery converter.
(C:\Test1.doc)
Please tell me what to do, because I'm a beginner in POI and I have not found a good tutorial for it.

First of all you should be closing your document.
Besides that, what I suggest doing is resaving your original Word document as a Word XML document, then changing the extension manually from .XML to .doc . Then look at the XML of the actual document you're working with and trace the content to make sure you're not accidentally editing hexadecimal values (AAA and EEE could be hex values in other fields).
Without seeing the actual Word document it's hard to say what's going on.
There is not much documentation about POI at all, especially for Word document unfortunately.

I don't know : is its OK to answer myself, but Just to share the knowledge, I'll answer myself.
After navigating the web, the final solution i found is :
The Library called docx4j is very good for dealing with MS docx file, although its documentation is not enough till now and its forum is still in a beginning steps, but overall it help me to do what i need..
Thanks 4 all who help me..

You could try OpenOffice API, but there arent many resources out there to tell you how to use it.

You can also try this one: http://www.dancrintea.ro/doc-to-pdf/

Looks like this could be the issue.