Example usage for java.util List iterator

Introduction

In this page you can find the example usage for java.util List iterator.

Prototype

Iterator<E> iterator();

Source Link

Document

Returns an iterator over the elements in this list in proper sequence.

Usage

From source file:Main.java

public static double getSumValue(HashMap<String, Double> map) {
    Double count = 0.0D;/*from   w w  w .  ja  v a2 s . com*/
    List list = new LinkedList(map.entrySet());
    for (Iterator it = list.iterator(); it.hasNext();) {
        Map.Entry entry = (Map.Entry) it.next();
        count += map.get(entry.getKey());
    }
    return count;
}

From source file:Main.java

public static void writeToWriter(List l, Writer out) throws IOException {
    writeToWriter(l.iterator(), out);
}

From source file:Main.java

public static void printParameter(NetworkInterface ni) throws SocketException {
    System.out.println(" Name = " + ni.getName());
    System.out.println(" Display Name = " + ni.getDisplayName());
    System.out.println(" Is up = " + ni.isUp());
    System.out.println(" Support multicast = " + ni.supportsMulticast());
    System.out.println(" Is loopback = " + ni.isLoopback());
    System.out.println(" Is virtual = " + ni.isVirtual());
    System.out.println(" Is point to point = " + ni.isPointToPoint());
    System.out.println(" Hardware address = " + ni.getHardwareAddress());
    System.out.println(" MTU = " + ni.getMTU());

    System.out.println("\nList of Interface Addresses:");
    List<InterfaceAddress> list = ni.getInterfaceAddresses();
    Iterator<InterfaceAddress> it = list.iterator();

    while (it.hasNext()) {
        InterfaceAddress ia = it.next();
        System.out.println(" Address = " + ia.getAddress());
        System.out.println(" Broadcast = " + ia.getBroadcast());
        System.out.println(" Network prefix length = " + ia.getNetworkPrefixLength());
        System.out.println("");
    }/*from  w ww  . j a va  2 s .c  o  m*/
}

From source file:Main.java

/**
 * Finds the first object in the heterogeneous list that is an instance of 
 * the given class, removes it from the list, and returns it.
 * If there is not object in the list of the given type the list is left
 * unmodified and null is returned./*from  w  w w . java  2s.  c  o  m*/
 * 
 * @throws NullPointerException if list or clazz is null
 * @throws UnsupportedOperationException if the list's Iterator does not support the remove()
 *     method
 */
@SuppressWarnings("unchecked")
public static <T> T findFirstAndRemove(List<?> list, Class<T> clazz) {
    for (Iterator<?> iter = list.iterator(); iter.hasNext();) {
        Object o = iter.next();
        if (clazz.isInstance(o)) {
            iter.remove();
            return (T) o; // safe
        }
    }
    return null;
}

From source file:Main.java

public static Optional<XMLEvent> getStartElement(List<XMLEvent> events, String elementName) {
    Iterator<XMLEvent> iterator = events.iterator();

    while (iterator.hasNext()) {
        XMLEvent event = iterator.next();

        if (event.isStartElement() && event.asStartElement().getName().getLocalPart().equals(elementName))
            return Optional.of(event);

    }/* w  w  w  .  j ava 2  s. c om*/

    return Optional.empty();
}

From source file:Main.java

public static String ListToString(String glue, List<Integer> myList) {
    String newString = "";
    for (Iterator<Integer> it = myList.iterator(); it.hasNext();) {
        newString += it.next();/*from www.  j  av a2  s .c  o  m*/
        if (it.hasNext()) {
            newString += ", ";
        }
    }
    return newString;
}

From source file:Main.java

/**
 * Converts a list of string values to a map with the string value as both
 * key and value/*from ww w.  j  a  v  a2s  . c om*/
 * 
 * @param stringValues
 * @return a Map
 */
public static Map toMap(List stringValues) {

    Map map = new HashMap();
    for (Iterator iter = stringValues.iterator(); iter.hasNext();) {
        String value = (String) iter.next();
        map.put(value, value);
    }
    return map;
}

From source file:Main.java

private static List getMainProcessNames(List list) {
    ArrayList arraylist = new ArrayList();
    Iterator iterator = list.iterator();
    do {/*from   w  w w  .ja  v  a 2s  . c  o  m*/
        if (!iterator.hasNext())
            break;
        String s = (String) iterator.next();
        int i = s.indexOf(":");
        if (i > 0)
            arraylist.add(s.substring(0, i));
    } while (true);
    return arraylist;
}

From source file:Main.java

public static String getClasspathString(List<File> c) {
    StringBuilder sb = new StringBuilder();
    Iterator<File> i = c.iterator();
    if (i.hasNext()) {
        sb.append(i.next().getAbsolutePath());
        while (i.hasNext()) {
            sb.append(File.pathSeparatorChar);
            sb.append(i.next().getAbsolutePath());
        }//from  www.  j a va2s. c  o  m
    }
    return sb.toString();
}

From source file:Main.java

public static Optional<Characters> getCharacterEventOfElement(List<XMLEvent> events, String elementName) {
    Iterator<XMLEvent> iterator = events.iterator();

    while (iterator.hasNext()) {
        XMLEvent event = iterator.next();

        if (event.isStartElement() && event.asStartElement().getName().getLocalPart().equals(elementName)) {
            XMLEvent nextEvent = iterator.next();
            if (nextEvent.isCharacters())
                return Optional.of(nextEvent.asCharacters());
        }/*w w  w . ja va  2  s.com*/

    }

    return Optional.empty();
}