List of usage examples for java.util Random nextBoolean
public boolean nextBoolean()
From source file:Main.java
public static void main(String[] argv) throws Exception { Random rand = new Random(); boolean b = rand.nextBoolean(); long l = rand.nextLong(); float f = rand.nextFloat(); // 0.0 <= f < 1.0 double d = rand.nextDouble(); // 0.0 <= d < 1.0 }
From source file:Main.java
public static void main(String args[]) { Random randomno = new Random(); // get next next boolean value boolean value = randomno.nextBoolean(); // check the value System.out.println("Value is: " + value); }
From source file:Main.java
public static final void main(String... args) { Random randomGenerator = new Random(); for (int idx = 1; idx <= 10; ++idx) { boolean randomBool = randomGenerator.nextBoolean(); System.out.println("Generated : " + randomBool); }//from ww w . j a v a 2 s .com }
From source file:Main.java
public static void main(String[] args) { Random r = new Random(); // generate some random boolean values boolean[] booleans = new boolean[10]; for (int i = 0; i < booleans.length; i++) { booleans[i] = r.nextBoolean(); }//from www. j a v a 2 s . c om for (boolean b : booleans) { System.out.print(b + ", "); } // generate a uniformly distributed int random numbers int[] integers = new int[10]; for (int i = 0; i < integers.length; i++) { integers[i] = r.nextInt(); } for (int i : integers) { System.out.print(i + ", "); } // generate a uniformly distributed float random numbers float[] floats = new float[10]; for (int i = 0; i < floats.length; i++) { floats[i] = r.nextFloat(); } for (float f : floats) { System.out.print(f + ", "); } // generate a Gaussian normally distributed random numbers double[] gaussians = new double[10]; for (int i = 0; i < gaussians.length; i++) { gaussians[i] = r.nextGaussian(); } for (double d : gaussians) { System.out.print(d + ", "); } }
From source file:ubic.BAMSandAllen.FocusedAnalysis.TestConnectivityRobustness.java
/** * @param args/*from w w w . j a v a2 s . c o m*/ */ public static void main(String[] args) throws Exception { main2(); System.exit(1); Direction direction = AnalyzeBAMSandAllenGenes.Direction.OUTGOING; boolean makeVirtualRegions = true; boolean squareMatrix = false; boolean logDistance = true; boolean slow = false; RegressMatrix regressType = RegressMatrix.BOTH; boolean useVirtual = true; boolean removeNonExp = true; ConnectivityAndAllenExpressionMatrixPair pair = ExpressionMatrixPairFactory.connectivityPartial(direction, slow, regressType, useVirtual, removeNonExp, logDistance); pair.getCorrelation(); // ConnectivityAndAllenExpressionMatrixPair pair = ExpressionMatrixPairFactory.connectivityAndExpression( // direction, useVirtual, removeNonExp ); String filename = "/grp/java/workspace/BAMSandAllen/data/rankedGenes/near final ammon/"; filename += "LOOGenesInOrder.in.partialcon.ammon.txt.452.0.01985.topGenes.txt"; // filename += "LOOGenesInOrder.out.partialcon.ammon.txt.374.0.016424.topGenes.txt"; RankedGeneListLoader aLook = new RankedGeneListLoader(filename); pair.setMatrixBDataRows(aLook.getLines()); log.info("Original:" + pair.getCorrelation()); log.info(pair.runJackKnife(true)); // second try List<String> connectionRows = pair.getMatrixA().getRowNames(); int seed = 7; Random r = new Random(seed); List<String> removeRows = new LinkedList<String>(); for (String region : connectionRows) { boolean remove = r.nextBoolean(); if (remove) { removeRows.add(region); } } pair.removeMatrixADataRows(removeRows); pair.printConnectionInfo(); pair.printDimensions(); log.info("After remvoing half:" + pair.getCorrelation() + ", seed=" + seed); }
From source file:Main.java
public static void main(String[] args) { JFrame frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); StyledDocument doc = new DefaultStyledDocument(); JTextPane textPane = new JTextPane(doc); textPane.setText("this is a test."); Random random = new Random(); for (int i = 0; i < textPane.getDocument().getLength(); i++) { SimpleAttributeSet set = new SimpleAttributeSet(); StyleConstants.setForeground(set, new Color(random.nextInt(256), random.nextInt(256), random.nextInt(256))); StyleConstants.setFontSize(set, random.nextInt(12) + 12); StyleConstants.setBold(set, random.nextBoolean()); StyleConstants.setItalic(set, random.nextBoolean()); StyleConstants.setUnderline(set, random.nextBoolean()); doc.setCharacterAttributes(i, 1, set, true); }/*from w w w .java2 s. c om*/ frame.add(new JScrollPane(textPane)); frame.setSize(500, 400); frame.setVisible(true); }
From source file:io.druid.examples.rabbitmq.RabbitMQProducerMain.java
public static void main(String[] args) throws Exception { // We use a List to keep track of option insertion order. See below. final List<Option> optionList = new ArrayList<Option>(); optionList.add(OptionBuilder.withLongOpt("help").withDescription("display this help message").create("h")); optionList.add(OptionBuilder.withLongOpt("hostname").hasArg() .withDescription("the hostname of the AMQP broker [defaults to AMQP library default]").create("b")); optionList.add(OptionBuilder.withLongOpt("port").hasArg() .withDescription("the port of the AMQP broker [defaults to AMQP library default]").create("n")); optionList.add(OptionBuilder.withLongOpt("username").hasArg() .withDescription("username to connect to the AMQP broker [defaults to AMQP library default]") .create("u")); optionList.add(OptionBuilder.withLongOpt("password").hasArg() .withDescription("password to connect to the AMQP broker [defaults to AMQP library default]") .create("p")); optionList.add(OptionBuilder.withLongOpt("vhost").hasArg() .withDescription("name of virtual host on the AMQP broker [defaults to AMQP library default]") .create("v")); optionList.add(OptionBuilder.withLongOpt("exchange").isRequired().hasArg() .withDescription("name of the AMQP exchange [required - no default]").create("e")); optionList.add(OptionBuilder.withLongOpt("key").hasArg() .withDescription("the routing key to use when sending messages [default: 'default.routing.key']") .create("k")); optionList.add(OptionBuilder.withLongOpt("type").hasArg() .withDescription("the type of exchange to create [default: 'topic']").create("t")); optionList.add(OptionBuilder.withLongOpt("durable") .withDescription("if set, a durable exchange will be declared [default: not set]").create("d")); optionList.add(OptionBuilder.withLongOpt("autodelete") .withDescription("if set, an auto-delete exchange will be declared [default: not set]") .create("a")); optionList.add(OptionBuilder.withLongOpt("single") .withDescription("if set, only a single message will be sent [default: not set]").create("s")); optionList.add(OptionBuilder.withLongOpt("start").hasArg() .withDescription("time to use to start sending messages from [default: 2010-01-01T00:00:00]") .create());/*from w ww .ja v a2 s . c o m*/ optionList.add(OptionBuilder.withLongOpt("stop").hasArg().withDescription( "time to use to send messages until (format: '2013-07-18T23:45:59') [default: current time]") .create()); optionList.add(OptionBuilder.withLongOpt("interval").hasArg() .withDescription("the interval to add to the timestamp between messages in seconds [default: 10]") .create()); optionList.add(OptionBuilder.withLongOpt("delay").hasArg() .withDescription("the delay between sending messages in milliseconds [default: 100]").create()); // An extremely silly hack to maintain the above order in the help formatting. HelpFormatter formatter = new HelpFormatter(); // Add a comparator to the HelpFormatter using the ArrayList above to sort by insertion order. formatter.setOptionComparator(new Comparator() { @Override public int compare(Object o1, Object o2) { // I know this isn't fast, but who cares! The list is short. return optionList.indexOf(o1) - optionList.indexOf(o2); } }); // Now we can add all the options to an Options instance. This is dumb! Options options = new Options(); for (Option option : optionList) { options.addOption(option); } CommandLine cmd = null; try { cmd = new BasicParser().parse(options, args); } catch (ParseException e) { formatter.printHelp("RabbitMQProducerMain", e.getMessage(), options, null); System.exit(1); } if (cmd.hasOption("h")) { formatter.printHelp("RabbitMQProducerMain", options); System.exit(2); } ConnectionFactory factory = new ConnectionFactory(); if (cmd.hasOption("b")) { factory.setHost(cmd.getOptionValue("b")); } if (cmd.hasOption("u")) { factory.setUsername(cmd.getOptionValue("u")); } if (cmd.hasOption("p")) { factory.setPassword(cmd.getOptionValue("p")); } if (cmd.hasOption("v")) { factory.setVirtualHost(cmd.getOptionValue("v")); } if (cmd.hasOption("n")) { factory.setPort(Integer.parseInt(cmd.getOptionValue("n"))); } String exchange = cmd.getOptionValue("e"); String routingKey = "default.routing.key"; if (cmd.hasOption("k")) { routingKey = cmd.getOptionValue("k"); } boolean durable = cmd.hasOption("d"); boolean autoDelete = cmd.hasOption("a"); String type = cmd.getOptionValue("t", "topic"); boolean single = cmd.hasOption("single"); int interval = Integer.parseInt(cmd.getOptionValue("interval", "10")); int delay = Integer.parseInt(cmd.getOptionValue("delay", "100")); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss"); Date stop = sdf.parse(cmd.getOptionValue("stop", sdf.format(new Date()))); Random r = new Random(); Calendar timer = Calendar.getInstance(); timer.setTime(sdf.parse(cmd.getOptionValue("start", "2010-01-01T00:00:00"))); String msg_template = "{\"utcdt\": \"%s\", \"wp\": %d, \"gender\": \"%s\", \"age\": %d}"; Connection connection = factory.newConnection(); Channel channel = connection.createChannel(); channel.exchangeDeclare(exchange, type, durable, autoDelete, null); do { int wp = (10 + r.nextInt(90)) * 100; String gender = r.nextBoolean() ? "male" : "female"; int age = 20 + r.nextInt(70); String line = String.format(msg_template, sdf.format(timer.getTime()), wp, gender, age); channel.basicPublish(exchange, routingKey, null, line.getBytes()); System.out.println("Sent message: " + line); timer.add(Calendar.SECOND, interval); Thread.sleep(delay); } while ((!single && stop.after(timer.getTime()))); connection.close(); }
From source file:org.apache.druid.examples.rabbitmq.RabbitMQProducerMain.java
public static void main(String[] args) throws Exception { // We use a List to keep track of option insertion order. See below. final List<Option> optionList = new ArrayList<Option>(); optionList.add(OptionBuilder.withLongOpt("help").withDescription("display this help message").create("h")); optionList.add(OptionBuilder.withLongOpt("hostname").hasArg() .withDescription("the hostname of the AMQP broker [defaults to AMQP library default]").create("b")); optionList.add(OptionBuilder.withLongOpt("port").hasArg() .withDescription("the port of the AMQP broker [defaults to AMQP library default]").create("n")); optionList.add(OptionBuilder.withLongOpt("username").hasArg() .withDescription("username to connect to the AMQP broker [defaults to AMQP library default]") .create("u")); optionList.add(OptionBuilder.withLongOpt("password").hasArg() .withDescription("password to connect to the AMQP broker [defaults to AMQP library default]") .create("p")); optionList.add(OptionBuilder.withLongOpt("vhost").hasArg() .withDescription("name of virtual host on the AMQP broker [defaults to AMQP library default]") .create("v")); optionList.add(OptionBuilder.withLongOpt("exchange").isRequired().hasArg() .withDescription("name of the AMQP exchange [required - no default]").create("e")); optionList.add(OptionBuilder.withLongOpt("key").hasArg() .withDescription("the routing key to use when sending messages [default: 'default.routing.key']") .create("k")); optionList.add(OptionBuilder.withLongOpt("type").hasArg() .withDescription("the type of exchange to create [default: 'topic']").create("t")); optionList.add(OptionBuilder.withLongOpt("durable") .withDescription("if set, a durable exchange will be declared [default: not set]").create("d")); optionList.add(OptionBuilder.withLongOpt("autodelete") .withDescription("if set, an auto-delete exchange will be declared [default: not set]") .create("a")); optionList.add(OptionBuilder.withLongOpt("single") .withDescription("if set, only a single message will be sent [default: not set]").create("s")); optionList.add(OptionBuilder.withLongOpt("start").hasArg() .withDescription("time to use to start sending messages from [default: 2010-01-01T00:00:00]") .create());/*w w w . j av a2 s . c o m*/ optionList.add(OptionBuilder.withLongOpt("stop").hasArg().withDescription( "time to use to send messages until (format: '2013-07-18T23:45:59') [default: current time]") .create()); optionList.add(OptionBuilder.withLongOpt("interval").hasArg() .withDescription("the interval to add to the timestamp between messages in seconds [default: 10]") .create()); optionList.add(OptionBuilder.withLongOpt("delay").hasArg() .withDescription("the delay between sending messages in milliseconds [default: 100]").create()); // An extremely silly hack to maintain the above order in the help formatting. HelpFormatter formatter = new HelpFormatter(); // Add a comparator to the HelpFormatter using the ArrayList above to sort by insertion order. //noinspection ComparatorCombinators -- don't replace with comparingInt() to preserve comments formatter.setOptionComparator((o1, o2) -> { // I know this isn't fast, but who cares! The list is short. //noinspection SuspiciousMethodCalls return Integer.compare(optionList.indexOf(o1), optionList.indexOf(o2)); }); // Now we can add all the options to an Options instance. This is dumb! Options options = new Options(); for (Option option : optionList) { options.addOption(option); } CommandLine cmd = null; try { cmd = new BasicParser().parse(options, args); } catch (ParseException e) { formatter.printHelp("RabbitMQProducerMain", e.getMessage(), options, null); System.exit(1); } if (cmd.hasOption("h")) { formatter.printHelp("RabbitMQProducerMain", options); System.exit(2); } ConnectionFactory factory = new ConnectionFactory(); if (cmd.hasOption("b")) { factory.setHost(cmd.getOptionValue("b")); } if (cmd.hasOption("u")) { factory.setUsername(cmd.getOptionValue("u")); } if (cmd.hasOption("p")) { factory.setPassword(cmd.getOptionValue("p")); } if (cmd.hasOption("v")) { factory.setVirtualHost(cmd.getOptionValue("v")); } if (cmd.hasOption("n")) { factory.setPort(Integer.parseInt(cmd.getOptionValue("n"))); } String exchange = cmd.getOptionValue("e"); String routingKey = "default.routing.key"; if (cmd.hasOption("k")) { routingKey = cmd.getOptionValue("k"); } boolean durable = cmd.hasOption("d"); boolean autoDelete = cmd.hasOption("a"); String type = cmd.getOptionValue("t", "topic"); boolean single = cmd.hasOption("single"); int interval = Integer.parseInt(cmd.getOptionValue("interval", "10")); int delay = Integer.parseInt(cmd.getOptionValue("delay", "100")); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.ENGLISH); Date stop = sdf.parse(cmd.getOptionValue("stop", sdf.format(new Date()))); Random r = ThreadLocalRandom.current(); Calendar timer = Calendar.getInstance(TimeZone.getTimeZone("UTC"), Locale.ENGLISH); timer.setTime(sdf.parse(cmd.getOptionValue("start", "2010-01-01T00:00:00"))); String msg_template = "{\"utcdt\": \"%s\", \"wp\": %d, \"gender\": \"%s\", \"age\": %d}"; Connection connection = factory.newConnection(); Channel channel = connection.createChannel(); channel.exchangeDeclare(exchange, type, durable, autoDelete, null); do { int wp = (10 + r.nextInt(90)) * 100; String gender = r.nextBoolean() ? "male" : "female"; int age = 20 + r.nextInt(70); String line = StringUtils.format(msg_template, sdf.format(timer.getTime()), wp, gender, age); channel.basicPublish(exchange, routingKey, null, StringUtils.toUtf8(line)); System.out.println("Sent message: " + line); timer.add(Calendar.SECOND, interval); Thread.sleep(delay); } while ((!single && stop.after(timer.getTime()))); connection.close(); }
From source file:de.tudarmstadt.ukp.experiments.argumentation.convincingness.sampling.Step2ArgumentPairsSampling.java
public static void main(String[] args) throws Exception { String inputDir = args[0];//w w w . j a v a2s.c om // /tmp File outputDir = new File(args[1]); if (!outputDir.exists()) { outputDir.mkdirs(); } // pseudo-random final Random random = new Random(1); int totalPairsCount = 0; // read all debates for (File file : IOHelper.listXmlFiles(new File(inputDir))) { Debate debate = DebateSerializer.deserializeFromXML(FileUtils.readFileToString(file, "utf-8")); // get two stances SortedSet<String> originalStances = debate.getStances(); // cleaning: some debate has three or more stances (data are inconsistent) // remove those with only one argument SortedSet<String> stances = new TreeSet<>(); for (String stance : originalStances) { if (debate.getArgumentsForStance(stance).size() > 1) { stances.add(stance); } } if (stances.size() != 2) { throw new IllegalStateException( "2 stances per debate expected, was " + stances.size() + ", " + stances); } // for each stance, get pseudo-random N arguments for (String stance : stances) { List<Argument> argumentsForStance = debate.getArgumentsForStance(stance); // shuffle Collections.shuffle(argumentsForStance, random); // and get max first N arguments List<Argument> selectedArguments = argumentsForStance.subList(0, argumentsForStance.size() < MAX_SELECTED_ARGUMENTS_PRO_SIDE ? argumentsForStance.size() : MAX_SELECTED_ARGUMENTS_PRO_SIDE); List<ArgumentPair> argumentPairs = new ArrayList<>(); // now create pairs for (int i = 0; i < selectedArguments.size(); i++) { for (int j = (i + 1); j < selectedArguments.size(); j++) { Argument arg1 = selectedArguments.get(i); Argument arg2 = selectedArguments.get(j); ArgumentPair argumentPair = new ArgumentPair(); argumentPair.setDebateMetaData(debate.getDebateMetaData()); // assign arg1 and arg2 pseudo-randomly // (not to have the same argument as arg1 all the time) if (random.nextBoolean()) { argumentPair.setArg1(arg1); argumentPair.setArg2(arg2); } else { argumentPair.setArg1(arg2); argumentPair.setArg2(arg1); } // set unique id argumentPair.setId(argumentPair.getArg1().getId() + "_" + argumentPair.getArg2().getId()); argumentPairs.add(argumentPair); } } String fileName = IOHelper.createFileName(debate.getDebateMetaData(), stance); File outputFile = new File(outputDir, fileName); // and save all sampled pairs into a XML file XStreamTools.toXML(argumentPairs, outputFile); System.out.println("Saved " + argumentPairs.size() + " pairs to " + outputFile); totalPairsCount += argumentPairs.size(); } } System.out.println("Total pairs generated: " + totalPairsCount); }
From source file:Main.java
static int randomOneOrMinusOne() { Random rand = new Random(); if (rand.nextBoolean()) return 1; else/*from www. j ava 2 s .co m*/ return -1; }