Example usage for java.util Iterator hasNext

Introduction

In this page you can find the example usage for java.util Iterator hasNext.

Prototype

boolean hasNext();

Source Link

Document

Returns true if the iteration has more elements.

Usage

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("");
    }/*  w w w . j a  v  a 2 s .  c o  m*/
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static Map<Integer, String> swapStrKeysAndIntValues(Map<String, Integer> hm) {
    HashMap<Integer, String> nhm = new HashMap<Integer, String>();
    Set<?> s = hm.entrySet();
    Iterator<?> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry m = (Map.Entry) it.next();
        nhm.put((Integer) m.getValue(), (String) m.getKey());
    }//from w  w w  .j  av a 2 s. c o  m
    return nhm;
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static Map<String, Integer> swapIntKeysAndStrValues(Map<Integer, String> hm) {
    HashMap<String, Integer> nhm = new HashMap<String, Integer>();
    Set<?> s = hm.entrySet();
    Iterator<?> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry m = (Map.Entry) it.next();
        nhm.put((String) m.getValue(), (Integer) m.getKey());
    }/*from   w  w  w  .  j a  v a2  s .  c o m*/
    return nhm;
}

From source file:Main.java

public static void display(Collection collection) {
    Iterator iterator = collection.iterator();
    while (iterator.hasNext()) {
        System.out.print(iterator.next() + " ");
    }//  w  w w.  j  ava 2 s  .  c  o m
    System.out.println();
}

From source file:Main.java

@SuppressWarnings("rawtypes")
public static Map<String, String> swapStrKeysAndStrValues(Map<String, ?> hm) {
    HashMap<String, String> nhm = new HashMap<String, String>();
    Set<?> s = hm.entrySet();
    Iterator<?> it = s.iterator();
    while (it.hasNext()) {
        Map.Entry m = (Map.Entry) it.next();
        nhm.put((String) m.getValue(), (String) m.getKey());
    }/*from www  . j av  a 2s. co  m*/
    return nhm;
}

From source file:com.apextom.util.CollectionUtil.java

/**
 * ? null .// ww w  .j a v  a2s . c o m
 * 
 * @param list
 */
public static void removeNull(Collection<Object> list) {
    if (list == null || list.size() == 0) {
        return;
    }
    Iterator<Object> iter = list.iterator();
    while (iter.hasNext()) {
        if (iter.next() == null) {
            iter.remove();
        }
    }

}

From source file:Main.java

public static List<String> removeIgnoreCase(List<String> l, String s) {
    Iterator<String> iter = l.iterator();
    while (iter.hasNext()) {
        if (iter.next().equalsIgnoreCase(s)) {
            iter.remove();//from w  w w . j  a  v  a 2s .c om
            break;
        }
    }
    return l;
}

From source file:Main.java

public static void printMap(Map map) {
    Iterator iter = map.entrySet().iterator();
    while (iter.hasNext()) {
        Map.Entry entry = (Map.Entry) iter.next();
        System.out.println(entry.getKey() + ": " + entry.getValue());
    }/* w w  w.  ja  v  a 2  s.c o m*/
}

From source file:Main.java

public static <T> List<T> intersection(Collection<T> a, Collection<T> b) {
    ArrayList list = new ArrayList();
    Iterator i$ = a.iterator();

    while (i$.hasNext()) {
        Object element = i$.next();
        if (b.contains(element)) {
            list.add(element);/*from w  w w  .j  a v  a  2 s  .  c o  m*/
        }
    }

    return list;
}

From source file:Main.java

public static <E> E getFirst(Collection<E> collection, E defaultValue) {
    Iterator<E> iterator = collection.iterator();
    return iterator.hasNext() ? iterator.next() : defaultValue;
}