Example usage for java.util Iterator next

Introduction

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

Prototype

E next();

Source Link

Document

Returns the next element in the iteration.

Usage

From source file:Main.java

public static void main(String[] args) {
    HashMap<String, Integer> myMap = new HashMap<String, Integer>();

    myMap.put("a", 1);
    myMap.put("b", 2);
    myMap.put("c", 3);

    Set<String> stStrKeys = myMap.keySet();
    Iterator<String> itrs = stStrKeys.iterator();
    while (itrs.hasNext()) {
        String s = itrs.next();
        System.out.println(s + ": " + myMap.get(s));
    }/* w  ww. jav  a  2  s .  com*/
}

From source file:NewStyle.java

public static void main(String args[]) {

    ArrayList<String> list = new ArrayList<String>();

    list.add("one");
    list.add("two");
    list.add("three");
    list.add("four");

    Iterator<String> itr = list.iterator();

    while (itr.hasNext()) {
        String str = itr.next(); // no cast needed

        System.out.println(str + " is " + str.length() + " chars long.");
    }//  w w w .ja va  2 s .  c  o m
}

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();//w  ww.j  a  v a2s .  c om
    Iterator itr = c.iterator();
    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) {
    Map map = System.getenv();

    Set keys = map.keySet();/* www.  j  ava 2s  .c o m*/
    Iterator iterator = keys.iterator();
    while (iterator.hasNext()) {
        String key = (String) iterator.next();
        String value = (String) map.get(key);

        System.out.println(key + " = " + value);
    }
}

From source file:Main.java

public static void main(String[] args) {
    String[] array = { "A", "B", "C", "D" };
    List list = Arrays.asList(array);

    Iterator iterator = list.iterator();
    while (iterator.hasNext()) {
        System.out.println((String) iterator.next());
    }/*from w  ww .  j  a  v  a2 s .  co m*/
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Iterator it = Arrays.asList("a", "b", "java2s.com").iterator();
    while (it.hasNext()) {
        String key = it.next().toString();
        System.out.println(key);/*from   w w  w. j  av  a  2 s. c om*/
    }
}

From source file:MainClass.java

public static void main(String[] args) {
    Map charsets = Charset.availableCharsets();
    Iterator iterator = charsets.keySet().iterator();
    while (iterator.hasNext()) {
        System.out.println(iterator.next());
    }/*  www . j a v a 2s .c om*/
}

From source file:Main.java

public static void main(String args[]) {

    PriorityQueue<Integer> prq = new PriorityQueue<Integer>();

    for (int i = 0; i < 10; i++) {
        prq.add(i);/*from w w  w .  j ava2  s.c  o  m*/
    }

    // create iterator from the queue
    Iterator it = prq.iterator();

    while (it.hasNext()) {
        System.out.println("Value: " + it.next());
    }
}

From source file:ItemSet.java

public static void main(String args[]) {
    String names[] = { "Item 1", "Item 2", "Item 3" };
    Set moons = new HashSet();
    int namesLen = names.length;
    int index;//from  w w  w. j  a  v  a 2  s . co m
    for (int i = 0; i < 100; i++) {
        index = (int) (Math.random() * namesLen);
        moons.add(names[index]);
    }
    Iterator it = moons.iterator();
    while (it.hasNext()) {
        System.out.println(it.next());
    }
    System.out.println("---");
    Set orderedMoons = new TreeSet(moons);
    it = orderedMoons.iterator();
    while (it.hasNext()) {
        System.out.println(it.next());
    }
}

From source file:DiameterMap.java

public static void main(String args[]) {
    String names[] = { "Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune", "Pluto" };
    float diameters[] = { 4800f, 12103.6f, 12756.3f, 6794f, 142984f, 120536f, 51118f, 49532f, 2274f };
    Map map = new TreeMap();
    for (int i = 0, n = names.length; i < n; i++) {
        map.put(names[i], new Float(diameters[i]));
    }/*  w  w w  .ja  v  a2  s . com*/
    Iterator it = map.keySet().iterator();
    Object obj;
    while (it.hasNext()) {
        obj = it.next();
        System.out.println(obj + ": " + map.get(obj));
    }
}