Example usage for java.io FileWriter FileWriter

Introduction

In this page you can find the example usage for java.io FileWriter FileWriter.

Prototype

public FileWriter(File file, Charset charset) throws IOException

Source Link

Document

Constructs a FileWriter given the File to write and java.nio.charset.Charset charset .

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileWriter fileWriter = new FileWriter("c:/abc.txt", true);
    fileWriter.append("java2s.com");
    fileWriter.close();/*  w w w .j a v  a 2  s  .c o  m*/

}

From source file:Main.java

public static void main(String[] args) throws Exception {
    FileWriter fileWriter = new FileWriter(new File("c:/abc.txt"), true);
    fileWriter.append("java2s.com");
    fileWriter.close();//from w w w . ja  v  a2  s  . c om

}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    BufferedWriter out = new BufferedWriter(new FileWriter("filename", true));
    out.write("aString");
    out.close();//from w  w  w. j  a v a  2s.c o  m
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    File file = new File("user.txt");

    FileWriter writer = new FileWriter(file, true);
    writer.write("username=java;password=secret" + System.getProperty("line.separator"));
    writer.flush();//from   w  w  w . j  a v  a2  s  .  co m
    writer.close();
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String multilineString = "This is line 1\nthis is line 2\nthis is last line";

    FileWriter fileWriter = new FileWriter("multiline.txt", true);

    BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
    bufferedWriter.write(multilineString + "\n");
    bufferedWriter.flush();/*from   w  w  w.  j  a  va  2  s  . c om*/
    bufferedWriter.close();
    fileWriter.close();
}

From source file:Main.java

public static void main(String args[]) throws Exception {

    PrintWriter pw = new PrintWriter(new FileWriter("logfile.txt", true));
    timeStamp("File opened", pw);
    pw.close();//from w w  w .  jav a2 s .  c  om
    if (pw.checkError())
        System.out.println("I/O error occurred.");
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String filename = "fileName.txt";
    String[] linesToWrite = new String[] { "a", "b" };
    boolean appendToFile = true;

    PrintWriter pw = null;//from   w w w.j  ava2 s .  c  o  m
    if (appendToFile) {
        pw = new PrintWriter(new FileWriter(filename, true));
    } else {
        pw = new PrintWriter(new FileWriter(filename));
        // pw = new PrintWriter(new FileWriter(filename, false));
    }
    for (int i = 0; i < linesToWrite.length; i++) {
        pw.println(linesToWrite[i]);
    }
    pw.flush();
    pw.close();
}

From source file:base64test.Base64Test.java

/**
 * @param args the command line arguments
 *///from   www  .  j  a  v a  2  s .c  o  m
public static void main(String[] args) {
    try {
        if (!Base64.isBase64(args[0])) {
            throw new Exception("Arg 1 is not a Base64 string!");
        } else {
            String decodedBase64String = new String(Base64.decodeBase64(args[0]));
            File tempFile = File.createTempFile("base64Test", ".tmp");
            tempFile.deleteOnExit();
            FileWriter fw = new FileWriter(tempFile, false);
            PrintWriter pw = new PrintWriter(fw);
            pw.write(decodedBase64String);
            pw.close();
            String fileType = getFileType(tempFile.toPath());
            System.out.println(fileType);
            System.in.read();
        }
    } catch (Exception e) {
        System.err.println(e.getMessage());
    }
}

From source file:jsonparser.ToJSON.java

public static void main(String args[]) throws FileNotFoundException, IOException {
    String text_file = "C:/Users/Kevin/Documents/NetBeansProjects/JsonParser/src/jsonparser/sample.txt";
    File file = new File(text_file);
    String s1, s2, s3;/* ww w  . j  av a 2 s  .c  o  m*/

    s1 = (String) FileUtils.readLines(file).get(0);
    String split1[] = s1.split("=");
    contact_id = split1[1];

    s2 = (String) FileUtils.readLines(file).get(1);
    String split2[] = s2.split("=");
    confidence_level = Float.valueOf(split2[1]);

    s3 = (String) FileUtils.readLines(file).get(2);
    String split3[] = s3.split("=");
    if (split3[1].equals(" Found")) {
        is_matched = true;
    } else {
        is_matched = false;
    }

    System.out.println("Read from text file:");
    System.out.println("contact_id =" + contact_id);
    System.out.println("confidence_level = " + confidence_level);
    System.out.println("is_matched = " + is_matched);

    FacialRecognition fr = new FacialRecognition();
    fr.setContactID(contact_id);
    fr.setConfidenceLevel(confidence_level);
    fr.setIsMatched(is_matched);
    Gson gson = new GsonBuilder().setPrettyPrinting().create();

    //convert java object to JSON format
    String json = gson.toJson(fr);

    //write JSON to a file
    try {
        //write converted json data to a file named "CountryGSON.json"  
        FileWriter writer = new FileWriter(
                "C:/Users/Kevin/Documents/NetBeansProjects/JsonParser/src/jsonparser/test.json", true);
        writer.write("" + json + ",\n");
        writer.close();

    } catch (IOException e) {
        e.printStackTrace();
    }

    //eventually need to change to send over back to client-side
    System.out.println();
    System.out.println("Coverting strings into JSON...");
    System.out.println(json);

}

From source file:MyTerrierClass.java

public static void main(String[] args) throws InterruptedException, IOException {

    System.gc();//from w  ww  . ja  v a2  s  . co  m
    System.setProperty("terrier.home", "/home/manan/Downloads/terrier-4.0");
    System.setProperty("terrier.etc", "/home/manan/Downloads/terrier-4.0/etc");
    System.setProperty("terrier.setup", "/home/manan/Downloads/terrier-4.0/etc/terrier.properties");

    bw = new BufferedWriter(new FileWriter("/home/manan/terrier_trials/myOutput.txt", false));
    bw.write("#######OUTPUT#######");

    List<String> cl = new ArrayList<>();
    cl.add("/home/manan/wiki-small/");
    SimpleFileCollection sf = new SimpleFileCollection(cl, true);

    print("sf list size b4 indexing:" + sf.getFileList().size());

    Indexer indexer = new BlockIndexer("/home/manan/terrier_trials/", ".trial");
    indexer.index(new Collection[] { sf });

    print("sf list size after indexing:" + sf.getFileList().size());
    sf.reset();
    //get document reader
    Reader reader = sf.next().getReader();
    //print all tokens
    Tokeniser tokeniser = Tokeniser.getTokeniser();
    TokenStream ts = tokeniser.tokenise(reader);
    while (ts.hasNext()) {
        System.out.println(ts.next());
    }

    //        Index index = Index.createIndex();
    //        
    //        Manager queryingManager = new Manager(index);
    // 
    //        String query = "name quick";
    //        SearchRequest srq = queryingManager.newSearchRequest("queryID0", query);
    //        srq.addMatchingModel("Matching", "PL2");
    //        queryingManager.runPreProcessing(srq);
    //        queryingManager.runMatching(srq);
    //        queryingManager.runPostProcessing(srq);
    //        queryingManager.runPostFilters(srq);
    //        ResultSet rs = srq.getResultSet();
    //        for(int each : rs.getDocids())
    //            System.out.println("docids: "+ each);

    //        Index index = Index.createIndex();
    //        Lexicon<String> lex = index.getLexicon();
    //        print("lex number of entries: "+lex.numberOfEntries());
    //        String myTerm = "name";
    //        LexiconEntry le = lex.getLexiconEntry(myTerm);
    //        if(le!=null)
    //        {
    //            print(myTerm+" in number of docs: "+le.getDocumentFrequency());
    //            print(myTerm+" occurance times: "+le.getFrequency());
    //        }
    //        else
    //        {
    //            print(myTerm+" not found");
    //        }

    //        Index index = Index.createIndex();
    //        BitPostingIndex inv = (BitPostingIndex) index.getInvertedIndex();
    //        MetaIndex meta = index.getMetaIndex();
    //        Lexicon<String> lex = index.getLexicon();
    //        LexiconEntry le = lex.getLexiconEntry( "name" );
    //        IterablePosting postings = inv.getPostings((BitIndexPointer) le);
    //        while (postings.next() != IterablePosting.EOL) {
    //                String docno = meta.getItem("docno", postings.getId());
    //                System.out.println(docno + " with frequency " + postings.getFrequency());
    //        }

    bw.close();
}