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 main(String[] argv) {
    // Create the sorted set
    Set<String> set = new TreeSet<String>();

    set.add("b");
    set.add("c");
    set.add("a");

    Iterator it = set.iterator();
    while (it.hasNext()) {

        Object element = it.next();
        System.out.println(element);
    }//from   ww w  . j  a va 2s  .c  o m

    // Create an array containing the elements in a set
    String[] array = (String[]) set.toArray(new String[set.size()]);
    Arrays.toString(array);
}

From source file:Main.java

public static void main(String[] args) throws IOException {
    String fileContent = "s1=1\n" + "s2=Main\n" + "s3=Fri Jan 31 00:00:00 IST 3913";
    InputStream propStream = new StringBufferInputStream(fileContent);

    PropertyResourceBundle bundle = new Main(propStream);

    // Get resource key set
    Set keySet = bundle.handleKeySet();
    Iterator keys = keySet.iterator();
    while (keys.hasNext()) {
        System.out.println("Bundle key: " + keys.next());
    }/*w ww  .jav a2  s.co m*/

}

From source file:MainClass.java

public static void main(String[] args) {
    Provider provider = Security.getProvider("BC");

    Iterator it = provider.keySet().iterator();

    while (it.hasNext()) {
        String entry = (String) it.next();
        if (entry.startsWith("Alg.Alias.")) {
            entry = entry.substring("Alg.Alias.".length());
        }// ww  w . j  ava 2 s. com
        System.out.println(entry);
    }
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Document doc = new SAXBuilder().build("books.xml");
    Element books = doc.getRootElement();

    Iterator it = books.getChildren().iterator();
    while (it.hasNext()) {
        Element book = (Element) it.next();
        System.out.println(book.getChildText("name") + " was published in " + book.getChildText("pubDate"));
    }/*from   w w  w .ja v  a2s .  c om*/

}

From source file:Main.java

public static void main(String[] args) {
    String text = "A,B,C,D";

    String[] keyValue = text.split(",");

    Map<Integer, String> myMap = new HashMap<Integer, String>();
    for (int i = 0; i < keyValue.length; i++) {
        myMap.put(i, keyValue[i]);//from   ww  w. j a  v a  2s.  c o  m
    }

    Set keys = myMap.keySet();
    Iterator itr = keys.iterator();

    while (itr.hasNext()) {
        Integer key = (Integer) itr.next();
        String value = (String) myMap.get(key);
        System.out.println(key + " - " + value);
    }
}

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 av  a  2 s.  c o  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:Main.java

public static void main(String[] args) throws Exception {
    // Prepare content for simulating property files
    String fileContent = "s1=1\n" + "s2=Main\n" + "s3=Fri Jan 31 00:00:00 IST 3913";
    InputStream propStream = new StringBufferInputStream(fileContent);

    // Create property resource bundle
    PropertyResourceBundle bundle = new Main(propStream);

    // Get resource key set
    Set keySet = bundle.handleKeySet();
    Iterator keys = keySet.iterator();
    while (keys.hasNext()) {
        System.out.println("Bundle key: " + keys.next());
    }/*www.  j a  va  2s  . c o  m*/

}

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.");
    }//from   ww w . ja  va2  s .c  o m
}

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();/*from   w  w  w  . ja  v a2 s.c  o  m*/
        System.out.println(s + ": " + myMap.get(s));
    }
}

From source file:SafeCollectionIteration.java

public static void main(String[] args) {
    List wordList = Collections.synchronizedList(new ArrayList());

    wordList.add("Iterators");
    wordList.add("require");
    wordList.add("special");
    wordList.add("handling");

    synchronized (wordList) {
        Iterator iter = wordList.iterator();
        while (iter.hasNext()) {
            String s = (String) iter.next();
            System.out.println("found string: " + s + ", length=" + s.length());
        }/*from   w w w . j av a  2s  .  c o m*/
    }
}