Example usage for java.util Collection remove

Introduction

In this page you can find the example usage for java.util Collection remove.

Prototype

boolean remove(Object o);

Source Link

Document

Removes a single instance of the specified element from this collection, if it is present (optional operation).

Usage

From source file:Main.java

public static void main(String[] args) {
    Hashtable<String, String> ht = new Hashtable<String, String>();
    ht.put("1", "One");
    ht.put("2", "Two");
    ht.put("3", "Three");

    Collection c = ht.values();
    Iterator itr = c.iterator();//  ww w .j a  va 2  s  . c  o  m
    while (itr.hasNext()) {
        System.out.println(itr.next());
    }
    c.remove("One");

    Enumeration e = ht.elements();

    while (e.hasMoreElements()) {
        System.out.println(e.nextElement());
    }
}

From source file:Main.java

  public static void main(String[] args) {
  Collection<String> names = new ArrayList<>();
  System.out.printf("Size = %d, Elements = %s%n", names.size(), names);
  names.add("XML");
  names.add("HTML");
  names.add("CSS");
  System.out.printf("Size   = %d, Elements   = %s%n",
      names.size(), names);//from ww w.j  a  v  a2 s.c o  m
  names.remove("CSS");
  System.out.printf("Size   = %d, Elements   = %s%n",
      names.size(), names);
  names.clear();
  System.out.printf("Size   = %d, Elements   = %s%n",
      names.size(), names);
}

From source file:PlanetSet.java

public static void main(String args[]) {
    String names[] = { "Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune", "Pluto" };
    Collection planets = new ArrayList();
    for (int i = 0, n = names.length; i < n; i++) {
        planets.add(names[i]);/*from  w  w w . j  a v  a 2  s . c  o m*/
    }
    String s[] = (String[]) planets.toArray(new String[0]);
    for (int i = 0, n = s.length; i < n; i++) {

        System.out.println(s[i]);
    }
    planets.remove(names[3]);
    System.out.println(names[1] + " " + planets.contains(names[1]));
    System.out.println(names[3] + " " + planets.contains(names[3]));
}

From source file:org.apache.batchee.cli.BatchEECLI.java

public static void main(final String[] args) {
    final Iterator<CliConfiguration> configuration = ServiceLoader.load(CliConfiguration.class).iterator();
    final CliConfiguration cliConfiguration = configuration.hasNext() ? configuration.next()
            : new DefaultCliConfiguration();

    final Map<String, Class<? extends Runnable>> commands = new TreeMap<String, Class<? extends Runnable>>();
    if (cliConfiguration.addDefaultCommands()) {
        for (final Class<? extends Runnable> type : Arrays.asList(Names.class, Start.class, Restart.class,
                Status.class, Running.class, Stop.class, Abandon.class, Instances.class, Executions.class,
                StepExecutions.class, Eviction.class)) {
            addCommand(commands, type);/* ww w  .j  a va2  s.co  m*/
        }
    }
    final Iterator<Class<? extends UserCommand>> userCommands = cliConfiguration.userCommands();
    if (userCommands != null) {
        while (userCommands.hasNext()) {
            addCommand(commands, userCommands.next());
        }
    }

    if (args == null || args.length == 0) {
        System.err.print(help(commands));
        return;
    }

    final Class<? extends Runnable> cmd = commands.get(args[0]);
    if (cmd == null) {
        if (args[0].equals("help")) {
            if (args.length > 1) {
                final Class<? extends Runnable> helpCmd = commands.get(args[1]);
                if (helpCmd != null) {
                    printHelp(helpCmd.getAnnotation(Command.class),
                            buildOptions(helpCmd, new HashMap<String, Field>()));
                    return;
                }
            } // else let use the default help
        }
        System.err.print(help(commands));
        return;
    }

    // build the command now
    final Command command = cmd.getAnnotation(Command.class);
    if (command == null) {
        System.err.print(help(commands));
        return;
    }

    final Map<String, Field> fields = new HashMap<String, Field>();
    final Options options = buildOptions(cmd, fields);

    final Collection<String> newArgs = new ArrayList<String>(asList(args));
    newArgs.remove(newArgs.iterator().next());

    final CommandLineParser parser = new DefaultParser();
    try {
        final CommandLine line = parser.parse(options, newArgs.toArray(new String[newArgs.size()]));
        cliConfiguration.decorate(instantiate(cmd, cliConfiguration, fields, !newArgs.isEmpty(), line)).run();
    } catch (final ParseException e) {
        printHelp(command, options);
    } catch (final RuntimeException e) {
        Class<?> current = e.getClass();
        while (current != null) {
            final Exit annotation = current.getAnnotation(Exit.class);
            if (annotation != null) {
                System.exit(annotation.value());
            }
            current = current.getSuperclass();
        }
        throw e;
    } catch (final InstantiationException e) {
        throw new IllegalStateException(e);
    } catch (final IllegalAccessException e) {
        throw new IllegalStateException(e);
    }
}

From source file:Main.java

public static void remove(Collection c, Object o) {
    c.remove(o);
}

From source file:Main.java

public static <E> Collection<E> excluding(Collection<E> collection, E object) throws Exception {

    collection.remove(object);

    return collection;
}

From source file:Main.java

/**
 * Removes objects in array to the given collection
 * //from w ww  .j  av  a  2 s  .com
 * @param c
 *            collection from which remove each element of array.
 * @param array
 *            ~ items
 * @return the same collection which is passed as argument(but without
 *         element from array)
 */
public static <E, T extends E> Collection<E> removeAll(Collection<E> c, T... array) {
    for (T obj : array) {
        c.remove(obj);
    }
    return c;
}

From source file:Main.java

/**
 * Removes objects in array to the given collection
 *
 * @return the same collection which is passed as argument
 *///from   www. ja v  a 2 s  .c o  m
@SuppressWarnings("unchecked")
public static <E, T extends E> Collection<E> removeAll(Collection<E> c, T... array) {
    for (T obj : array)
        c.remove(obj);
    return c;
}

From source file:Main.java

public static <K, V> void removeFromMultiMap(Map<K, Collection<V>> map, K key, V val) {
    Collection<V> col = map.get(key);
    if (col == null)
        return;//from  w  ww.j av a2 s .c om
    col.remove(val);

}

From source file:Main.java

/**
 * @return all the elements of first without any of those in second
 *///from  w  w  w. j av a2 s.c  o m
public static <E> Collection<E> less(Collection<E> first, Collection<E> second) {
    Collection<E> accum = new ArrayList<E>(first);
    for (E e : second) {
        accum.remove(e);
    }
    return accum;
}