Example usage for java.lang Integer Integer

Introduction

In this page you can find the example usage for java.lang Integer Integer.

Prototype

@Deprecated(since = "9")
public Integer(String s) throws NumberFormatException 

Source Link

Document

Constructs a newly allocated Integer object that represents the int value indicated by the String parameter.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>();

    Object o1 = new Integer(123);
    Object o2 = new Integer(123);
    objMap.put(o1, "first");
    objMap.put(o2, "from java2s.com");

    Object v1 = objMap.get(o1);/*  w ww.ja va2  s  .  c  o m*/
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    // create entry set from the map
    Set<Entry<Object, Object>> enset = objMap.entrySet();

    System.out.println("Set view of the map: " + enset);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    JSpinner spinner = new JSpinner();
    spinner.addChangeListener(new SpinnerListener());

    spinner.setValue(new Integer(100));
}

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From source file:Counter.java

public static void main(String[] args) {
    Map hm = new HashMap();
    for (int i = 0; i < 10; i++) {
        Integer r = new Integer(20);
        if (hm.containsKey(r))
            ((Counter) hm.get(r)).i++;/*from   w  w w  .  j a  v  a 2s .c o m*/
        else
            hm.put(r, new Counter());
    }
    System.out.println(hm);
}

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From source file:MessageFormatApp.java

public static void main(String args[]) {
    String pattern = "The time is {0,time} and ";
    pattern += "your lucky number is {1,number}.";
    MessageFormat format = new MessageFormat(pattern);
    Object objects[] = { new Date(), new Integer((int) (Math.random() * 1000)) };
    String formattedOutput = format.format(objects);
    System.out.println(formattedOutput);
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    Map<String, Integer> map = new HashMap<String, Integer>();
    map = new TreeMap();

    map.put("a", new Integer(1));
    map.put("b", new Integer(2));
    map.put("c", new Integer(3));

    int size = map.size(); // 2

    Object oldValue = map.put("a", new Integer(9)); // 1

    oldValue = map.remove("c"); // 3

    Iterator it = map.keySet().iterator();
    while (it.hasNext()) {
        Object key = it.next();//ww w . ja  v  a 2s.  co  m
    }

    it = map.values().iterator();
    while (it.hasNext()) {
        Object value = it.next();
    }
}

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From source file:Main.java

public static void main(String args[]) {
    Boolean b1 = new Boolean("TRUE");
    Boolean b2 = new Boolean("FALSE");
    System.out.println(b1.toString() + " or " + b2.toString());
    for (int j = 0; j < 16; ++j)
        System.out.print(Character.forDigit(j, 16));

    Integer i = new Integer(Integer.parseInt("ef", 16));
    Long l = new Long(Long.parseLong("abcd", 16));
    long m = l.longValue() * i.longValue();
    System.out.println(Long.toString(m, 8));

}

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From source file:TreeSetExample.java

public static void main(String[] args) {
    // Create a new TreeSet
    Set<Integer> set = new TreeSet<Integer>();

    // Add Items to the TreeSet
    set.add(new Integer(1));
    set.add(new Integer(2));
    set.add(new Integer(3));
    set.add(new Integer(4));
    set.add(new Integer(5));
    set.add(new Integer(6));
    set.add(new Integer(7));
    set.add(new Integer(8));
    set.add(new Integer(9));
    set.add(new Integer(10));

    // Use iterator to display the vsetes
    System.out.println("TreeSet Before: ");
    for (Iterator i = set.iterator(); i.hasNext();) {
        Integer integer = (Integer) i.next();
        System.out.println(integer);
    }/*  w  ww. j  av  a  2 s  .c  o  m*/

    // Remove the integer 6
    System.out.println("\nRemove Integer 6");
    set.remove(new Integer(6));

    // Use iterator to display the vsetes
    System.out.println("\nTreeSet After: ");
    for (Iterator i = set.iterator(); i.hasNext();) {
        Integer integer = (Integer) i.next();
        System.out.println(integer);
    }

}

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From source file:Main.java

public static void main(String args[]) {
    Boolean b1 = new Boolean("TRUE");
    Boolean b2 = new Boolean("FALSE");
    System.out.println(b1.toString() + " or " + b2.toString());
    for (int j = 0; j < 16; ++j)
        System.out.print(Character.forDigit(j, 16));

    Integer i = new Integer(Integer.parseInt("ef", 16));
    Long l = new Long(Long.parseLong("abcd", 16));
    long m = l.longValue() * i.longValue();
    System.out.println(Long.toString(m, 8));
    System.out.println(Float.MIN_VALUE);
    System.out.println(Double.MAX_VALUE);
}

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From source file:TreeMapExample.java

public static void main(String[] args) {
    Map<Integer, String> map = new TreeMap<Integer, String>();

    // Add Items to the TreeMap
    map.put(new Integer(1), "One");
    map.put(new Integer(2), "Two");
    map.put(new Integer(3), "Three");
    map.put(new Integer(4), "Four");
    map.put(new Integer(5), "Five");
    map.put(new Integer(6), "Six");
    map.put(new Integer(7), "Seven");
    map.put(new Integer(8), "Eight");
    map.put(new Integer(9), "Nine");
    map.put(new Integer(10), "Ten");

    // Use iterator to display the keys and associated values
    System.out.println("Map Values Before: ");
    Set keys = map.keySet();/*  w w w  .  ja  v  a 2  s  .c om*/
    for (Iterator i = keys.iterator(); i.hasNext();) {
        Integer key = (Integer) i.next();
        String value = (String) map.get(key);
        System.out.println(key + " = " + value);
    }

    // Remove the entry with key 6
    System.out.println("\nRemove element with key 6");
    map.remove(new Integer(6));

    // Use iterator to display the keys and associated values
    System.out.println("\nMap Values After: ");
    keys = map.keySet();
    for (Iterator i = keys.iterator(); i.hasNext();) {
        Integer key = (Integer) i.next();
        String value = (String) map.get(key);
        System.out.println(key + " = " + value);
    }
}

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From source file:LinkedListExample.java

public static void main(String[] args) {
    // Create a new LinkedList
    LinkedList<Integer> list = new LinkedList<Integer>();

    // Add Items to the array list
    list.add(new Integer(1));
    list.add(new Integer(2));
    list.add(new Integer(3));
    list.add(new Integer(4));
    list.add(new Integer(5));
    list.add(new Integer(6));
    list.add(new Integer(7));
    list.add(new Integer(8));
    list.add(new Integer(9));
    list.add(new Integer(10));

    // Use iterator to display the values
    for (Iterator i = list.iterator(); i.hasNext();) {
        Integer integer = (Integer) i.next();
        System.out.println(integer);
    }/*  w w w  . j a  v a2  s. co  m*/

    // Remove the element at index 5 (value=6)
    list.remove(5);

    // Set the value at index 5, this overwrites the value 7
    list.set(5, new Integer(66));

    // Use the linked list as a queue:
    // add an object to the end of the list (queue)
    // remove an item from the head of the list (queue)
    list.addLast(new Integer(11));
    Integer head = (Integer) list.removeFirst();
    System.out.println("Head: " + head);

    // Use iterator to display the values
    for (Iterator i = list.iterator(); i.hasNext();) {
        Integer integer = (Integer) i.next();
        System.out.println(integer);
    }
}

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