Example usage for java.util Map clear

List of usage examples for java.util Map clear

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Introduction

In this page you can find the example usage for java.util Map clear.

Prototype

void clear();

Source Link

Document

Removes all of the mappings from this map (optional operation).

Usage

From source file:MainClass.java

public static void main(String[] a) {
    Map map = new HashMap();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    map.clear();

    System.out.println(map);//from   www . ja  v a  2s .  c om
}

From source file:Main.java

public static void main(String[] a) {
    Map<String, String> map = new HashMap<String, String>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    map.clear();

    System.out.println(map.isEmpty());
}

From source file:Main.java

public static void main(String[] a) {
    Map<String, String> map = new HashMap<String, String>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    map.clear();

    System.out.println(map);/* w  w  w. j av  a2s  . c  o m*/
}

From source file:Main.java

public static void main(String[] a) {
    Map<String, String> map = new HashMap<String, String>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    map.clear();

    System.out.println(map.hashCode());
}

From source file:Main.java

public static void main(String[] args) {
    Map<String, String> map = new HashMap<>();
    map.put("CSS", "style");
    map.put("HTML", "mark up");
    map.put("Oracle", "database");
    map.put("XML", "data");

    printDetails(map);// www  . ja  v  a2s.  c  o m
    map.clear();
    printDetails(map);
}

From source file:org.bigtextml.drivers.BigMapReadTest.java

public static void main(String[] args) {
    /*/*from  w w  w.ja v  a2 s  . com*/
    ApplicationContext context = 
    new ClassPathXmlApplicationContext(new String[] {"InMemoryDataMining.xml"});
    */
    System.out.println(System.getProperty("InvokedFromSpring"));
    //Map<String,List<Integer>> bm = context.getBean("bigMapTest",BigMap.class);
    Map<String, List<Integer>> bm = ManagementServices.getBigMap("tmCache");
    System.out.println(((BigMap) bm).getCacheName());
    int max = 1000000;

    String key = Integer.toString(max - 1);
    //bm.remove(key);
    for (int i = 0; i < 3; i++) {
        long millis = System.currentTimeMillis();
        System.out.println(bm.get(Integer.toString(500000)));
        System.out.println(System.currentTimeMillis() - millis);
    }
    bm.clear();
}

From source file:com.workfront.StreamClientSample.java

public static void main(String[] args) {
    StreamClient client = new StreamClient("http://localhost:8080/attask/api");

    try {/*  w ww  .  ja v  a  2 s .  c o m*/
        // Login
        System.out.print("Logging in...");
        JSONObject session = client.login("admin@user.attask", "user");
        System.out.println("done");

        // Get user
        System.out.print("Retrieving user...");
        JSONObject user = client.get("user", session.getString("userID"),
                new String[] { "ID", "homeGroupID", "emailAddr" });
        System.out.println("done");

        // Search projects
        System.out.print("Searching projects...");
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("groupID", user.getString("homeGroupID"));
        JSONArray results = client.search("proj", map, new String[] { "ID", "name" });
        System.out.println("done");

        for (int i = 0; i < Math.min(10, results.length()); i++) {
            System.out.println(" - " + results.getJSONObject(i).getString("name"));
        }

        // Create project
        System.out.print("Creating project...");
        map.clear();
        map.put("name", "My Project");
        map.put("groupID", user.getString("homeGroupID"));
        JSONObject proj = client.post("proj", map);
        System.out.println("done");

        // Get project
        System.out.print("Retrieving project...");
        proj = client.get("proj", proj.getString("ID"));
        System.out.println("done");

        // Edit project
        System.out.print("Editing project...");
        map.clear();
        map.put("name", "Your Project");
        proj = client.put("proj", proj.getString("ID"), map);
        System.out.println("done");

        // Delete project
        System.out.print("Deleting project...");
        client.delete("proj", proj.getString("ID"));
        System.out.println("done");

        // Logout
        System.out.print("Logging out...");
        client.logout();
        System.out.println("done");
    } catch (StreamClientException e) {
        System.out.println(e.getMessage());
    } catch (JSONException e) {
        System.out.println(e.getMessage());
    }
}

From source file:org.bigtextml.drivers.BigMapTest.java

public static void main(String[] args) {
    /*/* w ww . j av  a2 s .c om*/
    ApplicationContext context = 
    new ClassPathXmlApplicationContext(new String[] {"InMemoryDataMining.xml"});
    */
    System.out.println(System.getProperty("InvokedFromSpring"));
    //Map<String,List<Integer>> bm = context.getBean("bigMapTest",BigMap.class);
    Map<String, List<Integer>> bm = ManagementServices.getBigMap("tmCache");
    System.out.println(((BigMap) bm).getCacheName());
    int max = 1000000;

    //bm.setMaxCapacity(1000);

    for (int i = 0; i < max; i++) {
        List<Integer> x = new ArrayList<Integer>();
        for (int j = 0; j < 5; j++) {
            x.add(j);
        }
        x.add(i);
        bm.put(Integer.toString(i), x);
    }
    String key = Integer.toString(max - 1);
    //bm.remove(key);
    for (int i = 0; i < 3; i++) {
        long millis = System.currentTimeMillis();
        System.out.println(bm.get(Integer.toString(500000)));
        System.out.println(System.currentTimeMillis() - millis);
    }
    bm.clear();
}

From source file:gov.jgi.meta.hadoop.input.FastqBlockLineReader.java

public static void main(String[] args) {

    int num = 100;
    int last = -1;

    do {/*from   w  ww .ja va 2  s . c  o m*/
        try {
            FileInputStream fstream = new FileInputStream("/ifs/scratch/karan/derep-perf/HiSeq-8343080.fq");
            FastqBlockLineReader fblr = new FastqBlockLineReader(fstream);

            Text key = new Text();
            Map<String, String> setofreads = new HashMap<String, String>();
            int length = (int) (Math.random() * 1000000);
            System.out.println("iteration " + num + " length = " + length);

            int total = 0;

            fblr.readLine(key, setofreads, Integer.MAX_VALUE, length);
            //            System.out.println("setofreads.size = " + setofreads.size());
            total += setofreads.size();
            //for (String s : setofreads.keySet()) {
            //                System.out.println(s);
            //            }
            int m = 0;
            while (setofreads.size() > 0) {
                System.out.print(".");
                if ((++m) % 80 == 0)
                    System.out.print("\n");

                setofreads.clear();
                fblr.readLine(key, setofreads, Integer.MAX_VALUE, length);
                //              System.out.println("setofreads.size = " + setofreads.size());
                total += setofreads.size();
            }
            System.out.println("\ntotal = " + total);

            if (last != -1) {
                if (last != total) {
                    System.out.println(
                            "error!!!, length = " + length + ": last = " + last + " current = " + total);
                }
            }
            last = total;

        } catch (Exception e) {
            System.out.println(e);
        }
    } while (num-- > 0);
}

From source file:gov.jgi.meta.hadoop.input.FastaBlockLineReader.java

public static void main(String[] args) {

    int num = 1;//ww w.  j  a  va  2 s.co  m
    int last = -1;

    do {
        try {
            FileInputStream fstream = new FileInputStream("/scratch/karan/30mb.fas");
            FastaBlockLineReader fblr = new FastaBlockLineReader(fstream);

            Text key = new Text();
            Map<String, String> setofreads = new HashMap<String, String>();
            Map<String, String> setofreadsTotal = new HashMap<String, String>();
            int length = (int) (Math.random() * 10000);
            length = 3000000;
            System.out.println("lenght = " + length);

            int total = 0;

            fblr.readLine(key, setofreads, Integer.MAX_VALUE, length);
            //            System.out.println("setofreads.size = " + setofreads.size());
            total += setofreads.size();
            //for (String s : setofreads.keySet()) {
            //                System.out.println(s);
            //            }
            Runtime r = Runtime.getRuntime();
            while (setofreads.size() > 0) {
                setofreadsTotal.putAll(setofreads);
                setofreads.clear();
                fblr.readLine(key, setofreads, Integer.MAX_VALUE, length);
                //              System.out.println("setofreads.size = " + setofreads.size());
                total += setofreads.size();

                r.gc();
            }
            System.out.println("total = " + total);
            System.out.println("heap size = " + r.totalMemory() / 1048576);

            if (last != -1) {
                if (last != total) {
                    System.out.println(
                            "error!!!, length = " + length + ": last = " + last + " current = " + total);
                }
            }
            last = total;

        } catch (Exception e) {
            System.out.println(e);
        }
    } while (num-- > 0);

}