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POHow can I Monitor External files in Java
 

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  1. POHow can I Monitor External files in Java
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    <p>I have a <code>.exe</code> file, It takes <code>.txt</code> file as a Input and it returns <code>.txt</code> files as outputs.</p> <p>I have 2 folders names are <code>InputFiles</code> and <code>ExeFolder</code>.</p> <p><code>InputFiles</code> folder have so many number of input files, which files are passing as a argument to <code>.Exe</code> file.</p> <p><code>ExeFolder</code> have <code>.exe</code> file,<code>output</code> files and only one <code>Input</code> file(we will get this file from <code>InputFiles</code> folder).</p> <p>I want to build 1 web Application, It will work in the following way.</p> <p>step 1 :</p> <p>it checks, How many no of files are available in sourceDirectory as far my requirements.generally every time I want to find <code>.txt</code> files but for my code maintenance I passed <code>filetype</code> as a argument to function.</p> <p>For this,I wrote the following code,it's working fine</p> <pre><code> public List&lt;File&gt; ListOfFileNames(String directoryPath,String fileType) { //Creating Object for File class File fileObject=new File(directoryPath); //Fetching all the FileNames under given Path File[] listOfFiles=fileObject.listFiles(); //Creating another Array for saving fileNames, which are satisfying as far our requirements List&lt;File&gt; fileNames = new ArrayList&lt;File&gt;(); for (int fileIndex = 0; fileIndex &lt; listOfFiles.length; fileIndex++) { if (listOfFiles[fileIndex].isFile()) { //True condition,Array Index value is File if (listOfFiles[fileIndex].getName().endsWith(fileType)) { //System.out.println(listOfFiles[fileIndex].getName()); fileNames .add(listOfFiles[fileIndex]); } } } return fileNames; } </code></pre> <p>step 2:</p> <p>I used <code>for</code> loop Based on length of <code>ListOfFileNames[dir,filetype]</code>,For every Iteration <code>file</code> will be overwrite in <code>ExeFolder</code> folder. For this I wrote the following function.It's working fine</p> <pre><code> public void FileMoving(File sourceFilePath,String destinationPath,String fileName)throws IOException { File destinationPathObject=new File(destinationPath); if ( (destinationPathObject.isDirectory())&amp;&amp; (sourceFilePath.isFile()) ) //both source and destination paths are available { //creating object for File class File statusFileNameObject=new File(destinationPath+"/"+fileName); if (statusFileNameObject.isFile()) //Already file is exists in Destination path { //deleted File statusFileNameObject.delete(); //paste file from source to Destination path with fileName as value of fileName argument FileUtils.copyFile(sourceFilePath, statusFileNameObject); } //File is not exists in Destination path. { //paste file from source to Destination path with fileName as value of fileName argument FileUtils.copyFile(sourceFilePath, statusFileNameObject); } } } </code></pre> <p>Step 3 :</p> <p><code>.exe</code> file will be run.For this I wrote the following function.Working fine but in this function I need to add some code for waiting.</p> <pre><code> public void ExeternalFileProcessing(String DirectoryPath,String exeFilePath,String inputFileName) throws IOException { //Creating Absolute file path of the executableFile String executableFileName = DirectoryPath+"/"+exeFilePath; //Assinging the InputFileName argument value to inputFile Variable String inputFile=inputFileName; //creating ProcessBuilderObject with 2 arguments ProcessBuilder processBuilderObject=new ProcessBuilder(executableFileName,inputFile); //creating object File absoluteDirectory = new File(DirectoryPath); //Assinging processBuilderObject.directory(absoluteDirectory); //starting process processBuilderObject.start(); // //processBuilderObject.wait(); } </code></pre> <p>Step 4: </p> <p>once <code>.exe</code> process was done, then only next Iteration will be start. That means we need to monitor <code>.exe</code> process,whether is it done or not.</p> <p>for integration, I wrote the following function name as <code>Integration</code>.</p> <pre><code> public void Integration(String fileType,String sourcePath,String directoryPath,String executableName,String inputFileName)throws IOException { //created object for Class ExternalFileExecutions ExternalFileExecutionsObject=new ExternalFileExecutions(); //calling Method from class object List&lt;File&gt; finalListNames=ExternalFileExecutionsObject.ListOfFileNames(sourcePath,fileType); for (int fileIndex = 0; fileIndex &lt; finalListNames.size(); fileIndex++) { //Copy and pasting file from SourcePath to destination Path ExternalFileExecutionsObject.FileMoving( finalListNames.get(fileIndex), directoryPath, inputFileName ); //Form here,.exe process will be start ExternalFileExecutionsObject.ExeternalFileProcessing(directoryPath,executableName,inputFileName); } } </code></pre> <p>I called these, <code>Integration</code> function in my <code>main()</code> in the following way.</p> <pre><code>public static void main(String[] args) throws IOException { //created object for Class ExternalFileExecutions ExternalFileExecutionsObject=new ExternalFileExecutions(); ExternalFileExecutionsObject.Integration( ".txt", "C:/Users/Infratab Bangalore/Desktop/copy", "C:/Users/Infratab Bangalore/Desktop/Rods", "ThMapInfratab1-2.exe", "TMapInput.txt" ); } </code></pre> <p>If you observer, my code,every thing was done except <code>.exe</code> monitoring,whether is it completed or not.Once first iteration process was done then it allows next Iteration.In second Iteration again <code>.exe</code> will be process.it just like <code>queue</code>.</p> <p>Actually I never work on <code>Java</code>,but using <code>stackoverflow</code> I wrote the above functions. Now I want to fix <code>.exe</code> monitoring.</p> <p>I didn't found anything.</p> <p>can anyone help me.</p> <p>I hope, you guys understand what I am facing.</p> <p>Thanks</p>
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    1. USur truly friend
    1. USur truly friend
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    1. COsorry but we will not wirte your code. try something and if you have problems, ask us
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      1. POHow can I Monitor External files in Java
      1. USPhilipp Sander
    2. CO@PhilippSander I wrote two functions. but I am facing some problems so I will tell you with in 1 hour.
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      1. USur truly friend
    3. CO@PhilippSander I posted the following question. can you check it once. `http://stackoverflow.com/questions/17808813/how-to-return-array-values-as-a-output-to-a-method-in-java`
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