Example usage for java.lang System currentTimeMillis

List of usage examples for java.lang System currentTimeMillis

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Introduction

In this page you can find the example usage for java.lang System currentTimeMillis.

Prototype

@HotSpotIntrinsicCandidate
public static native long currentTimeMillis();

Source Link

Document

Returns the current time in milliseconds.

Usage

From source file:MainClass.java

public static void main(String args[]) {
    Object array = Array.newInstance(int.class, 3);

    int length = Array.getLength(array);
    Random generator = new Random(System.currentTimeMillis());
    for (int i = 0; i < length; i++) {
        int random = generator.nextInt();
        Array.setInt(array, i, random);
    }//from www .jav  a2  s.  c  o  m

    for (int i = 0; i < length; i++) {
        int value = Array.getInt(array, i);
        System.out.println("Position: " + i + ", value: " + value);
    }
}

From source file:MainClass.java

public static void main(String[] args) {
    try {/*from ww w.j  a  v  a  2  s .  c  o  m*/
        URLConnection uc = new URL("http://www.demo2s.com").openConnection();
        System.out
                .println("Will retrieve file if it's been modified since " + new Date(uc.getIfModifiedSince()));
        uc.setIfModifiedSince(System.currentTimeMillis());
        System.out
                .println("Will retrieve file if it's been modified since " + new Date(uc.getIfModifiedSince()));
    } catch (Exception e) {
        System.err.println(e);
    }
}

From source file:Main.java

public static void main(String[] args) throws FileNotFoundException {
    List<Integer> arraySource = new ArrayList<>();
    for (int i = 0; i < 99999; i++) {
        arraySource.add(i);/*w ww.  j ava2s . com*/
    }

    Integer[] myArray = new Integer[999];
    myArray = arraySource.toArray(myArray);
    long startTime = System.currentTimeMillis();
    Arrays.sort(myArray);
    long endTime = System.currentTimeMillis();
    System.out.println("Time take in serial: " + (endTime - startTime) / 1000.0);

    Integer[] myArray2 = new Integer[999];
    myArray2 = arraySource.toArray(myArray);
    startTime = System.currentTimeMillis();
    Arrays.parallelSort(myArray2);
    endTime = System.currentTimeMillis();
    System.out.println("Time take in parallel: " + (endTime - startTime) / 1000.0);

}

From source file:MainClass.java

public static void main(String[] args) {

    try {/*from   w ww. j  a va 2s.  c  om*/
        String FILE = "c:\\systemin.txt";
        FileOutputStream outStr = new FileOutputStream(FILE, true);
        PrintStream printStream = new PrintStream(outStr);

        System.setErr(printStream);

        Timestamp now = new Timestamp(System.currentTimeMillis());
        System.out.println(now.toString() + ": This is text that should go to the file");

        outStr.close();
        printStream.close();
    } catch (FileNotFoundException ex) {
        ex.printStackTrace();
        System.exit(-1);
    } catch (IOException ex) {
        ex.printStackTrace();
        System.exit(-1);
    }
}

From source file:TestCompilationSpeed.java

public static void main(String[] args) throws Exception {
    ScriptEngineManager manager = new ScriptEngineManager();
    ScriptEngine engine = manager.getEngineByName("JavaScript");

    String fact = "function fact (n){if (n == 0)return 1; else return n*fact (n-1);};";

    long time = System.currentTimeMillis();
    for (int i = 0; i < MAX_ITERATIONS; i++)
        engine.eval(fact);/*from   www. j  a  va  2 s .  co m*/
    System.out.println(System.currentTimeMillis() - time);

    Compilable compilable = null;
    if (engine instanceof Compilable) {
        compilable = (Compilable) engine;
        CompiledScript script = compilable.compile(fact);

        time = System.currentTimeMillis();
        for (int i = 0; i < MAX_ITERATIONS; i++)
            script.eval();
        System.out.println(System.currentTimeMillis() - time);
    }
}

From source file:Main.java

public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            final Date date = new Date();
            final JLabel timeLabel = new JLabel(date.toString());
            Timer timer = new Timer(1000, new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    date.setTime(System.currentTimeMillis());
                    timeLabel.setText(date.toString());
                }//from   w  w  w .j a va 2  s . c o  m
            });
            timer.start();
            JOptionPane.showMessageDialog(null, timeLabel);
        }
    });
}

From source file:componentTest.testForClient1.java

public static void main(String[] args) throws IOException, ParseException {
    System.out.println("**********************begin VM information****************\n");

    /*Test1  read Client File which contains only one VM*/

    long Time1 = System.currentTimeMillis();
    LinkedList<VM> VMList = method.readClientFileAndGenerateVMList("confClient\\test3.json");

    /*//from   w ww .  j a v  a 2  s .c om
    for (int i=0;i<VMList.size();i++)
    {
             
     VMList.get(i).printInfo();
            
    }
            
    */
    //System.out.println("**********************begin policyList information****************\n");

    LinkedList<ArrayList> policyList = method.readClientFileAndGenerateAbstractPolicy("confClient\\test3.json");

    long Time2 = System.currentTimeMillis();

    System.out.println("VM list generation duration=" + (Time2 - Time1) + "ms");

    /*
    for (int i=0;i<policyList.size();i++)
         {
             
     System.out.println("*********policy List********\n");
     method.printArrayList(policyList.get(i));
                 
         }
     */

}

From source file:edu.packt.neuralnet.som.Kohonen2DTest.java

public static void main(String[] args) {

    RandomNumberGenerator.seed = System.currentTimeMillis();

    int numberOfInputs = 2;
    int neuronsGridX = 12;
    int neuronsGridY = 12;
    int numberOfPoints = 1000;

    double[][] rndDataSet;
    rndDataSet = RandomNumberGenerator.GenerateMatrixGaussian(numberOfPoints, numberOfInputs, 100.0, 1.0);
    //rndDataSet = RandomNumberGenerator.GenerateMatrixBetween(numberOfPoints, numberOfInputs, 100.0, 110.0);

    for (int i = 0; i < numberOfPoints; i++) {
        rndDataSet[i][0] *= Math.sin(i);
        rndDataSet[i][0] += RandomNumberGenerator.GenerateNext() * 50;
        rndDataSet[i][1] *= Math.cos(i);
        rndDataSet[i][1] += RandomNumberGenerator.GenerateNext() * 50;
    }/*  w w  w  .  ja  va 2  s .  c o m*/

    //        for (int i=0;i<numberOfPoints;i++){
    //            rndDataSet[i][0]=i;            
    //            rndDataSet[i][0]+=RandomNumberGenerator.GenerateNext();
    //            rndDataSet[i][1]=Math.cos(i/100.0);            
    //            rndDataSet[i][1]+=RandomNumberGenerator.GenerateNext()*5;
    //        }        

    Kohonen kn2 = new Kohonen(numberOfInputs, neuronsGridX, neuronsGridY,
            new GaussianInitialization(500.0, 20.0));

    NeuralDataSet neuralDataSet = new NeuralDataSet(rndDataSet, 2);

    CompetitiveLearning complrn = new CompetitiveLearning(kn2, neuralDataSet,
            LearningAlgorithm.LearningMode.ONLINE);
    complrn.show2DData = true;
    complrn.printTraining = true;
    complrn.setLearningRate(0.5);
    complrn.setMaxEpochs(1000);
    complrn.setReferenceEpoch(300);
    complrn.sleep = -1;

    try {
        String[] seriesNames = { "Training Data" };
        Paint[] seriesColor = { Color.WHITE };

        Chart chart = new Chart("Training", rndDataSet, seriesNames, 0, seriesColor, Chart.SeriesType.DOTS);
        ChartFrame frame = new ChartFrame("Training", chart.scatterPlot("X", "Y"));
        frame.pack();
        frame.setVisible(true);
        //            //System.in.read();
        complrn.setPlot2DFrame(frame);
        complrn.showPlot2DData();
        //System.in.read();
        complrn.train();
    } catch (Exception ne) {

    }
}

From source file:com.everm.httpclient.HttpClientTest.java

/**
 * @param args//w ww  .j  a  va2 s . c o m
 */
public static void main(String[] args) {
    String uri = "http://samsung-cps-000.s3.amazonaws.com/PDF/-137219737027956571";
    HttpClient client = new DefaultHttpClient();
    HttpGet httpGet = new HttpGet(uri);
    HttpResponse response = null;

    long startTime = System.currentTimeMillis();
    try {
        httpGet.addHeader("Date", "Mon, 18 Feb 2013 08:14:01 GMT");
        httpGet.addHeader("Authorization", "AWS AKIAIULRL33KVNJCCNAQ:ac4P+U1n+ib/PkOCqyuH4lt9hK8=");
        //         for (int i = 0; i < 100; i++) {
        response = client.execute(httpGet);
        //            System.out.println(i + "___" + response.getStatusLine());
        System.out.println(response.getStatusLine());
        EntityUtils.consume(response.getEntity());
        //         }
    } catch (Exception e) {
        e.printStackTrace();
    }

    long endTime = System.currentTimeMillis();
    System.out.println("elapsed time :" + (endTime - startTime));
}

From source file:TimeTrial.java

public static void main(String[] args) {
    // Format Date into dd-MM-yyyy
    System.out.println("1) dd-MM-yyyy >>>" + DateFormatUtils.format(new Date(), "dd-MM-yyyy"));

    // Format Date into SMTP_DATETIME_FORMAT
    System.out.println("2) SMTP_DATETIME_FORMAT >>>" + DateFormatUtils.SMTP_DATETIME_FORMAT.format(new Date()));

    // Format Date into ISO_DATE_FORMAT
    System.out.println("3) ISO_DATE_FORMAT >>>" + DateFormatUtils.ISO_DATE_FORMAT.format(new Date()));

    // Format milliseconds in long
    System.out.println(//from  w  w  w  .  ja  v  a  2  s.  c o  m
            "4) MMM dd yy HH:mm >>>" + DateFormatUtils.format(System.currentTimeMillis(), "MMM dd yy HH:mm"));

    // Format milliseconds in long using UTC timezone
    System.out.println(
            "5) MM/dd/yy HH:mm >>>" + DateFormatUtils.formatUTC(System.currentTimeMillis(), "MM/dd/yy HH:mm"));
}