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[] args) {
    String myKey = "MyKey";
    System.setProperty(myKey, "102");
    System.out.println(Integer.getInteger(myKey));
    System.out.println(Integer.getInteger("NoExist", new Integer(999)));
}

From source file:Main.java

public static void main(String[] args) {
    HashSet<Integer> hSet = new HashSet<Integer>();
    System.out.println("Size of HashSet : " + hSet.size());

    hSet.add(new Integer("1"));
    hSet.add(new Integer("2"));
    hSet.add(new Integer("3"));

    System.out.println(hSet.size());

    hSet.remove(new Integer("1"));
    System.out.println(hSet.size());
}

From source file:Main.java

public static void main(String[] args) {
    Hashtable h = new Hashtable(20);

    System.out.println(h.put("one", new Integer(1)));
    System.out.println(h.put("name", "A"));
    System.out.println(h.put("date", new Date()));
    System.out.println(h.put("one", new Integer(4)));

    Enumeration e = h.keys();/*from w w  w. j  a v  a  2 s. c om*/
    while (e.hasMoreElements())
        System.out.println(e.nextElement());

    e = h.elements();
    while (e.hasMoreElements())
        System.out.println(e.nextElement());
}

From source file:Main.java

public static void main(String[] args) throws NoSuchAlgorithmException {
    int numBytes = (new Integer("1111")).intValue();

    SecureRandom srand = new SecureRandom(new byte[] { 1, 2, 3, 4 });

    Provider provider = srand.getProvider();

    SecureRandom newRandom = SecureRandom.getInstance("SHA1PRNG", provider);

    System.out.println(provider.getName());

    byte[] bytes = new byte[numBytes];
    srand.nextBytes(bytes);// w  ww  . j  av  a  2  s.c  om
    System.out.println(bytes);
}

From source file:Main.java

public static void main(String[] argv) {
    JFormattedTextField tft1 = new JFormattedTextField(NumberFormat.getIntegerInstance());
    tft1.setValue(new Integer(123));

    Integer intValue = (Integer) tft1.getValue();
}

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, "second");

    Object v1 = objMap.get(o1); // first
    Object v2 = objMap.get(o2); // second
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    IdentityHashMap<Object, Object> objMap = new IdentityHashMap<Object, Object>(5);

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

    Object v1 = objMap.get(o1); // first
    Object v2 = objMap.get(o2); // second
}

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);/*  www.  ja v  a  2s . c  o m*/
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    System.out.println(objMap.hashCode());
}

From source file:MainClass.java

public static void main(String args[]) {

    Vector vector = new Vector();
    vector.addElement(new Integer(5));
    vector.addElement(new Float(-14.14f));
    vector.addElement(new String("Hello"));

    Enumeration e = vector.elements();
    while (e.hasMoreElements()) {
        Object obj = e.nextElement();
        System.out.println(obj);/*from ww  w.j  a v  a 2s  .c o  m*/
    }
}

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);/* ww  w. j av a2s .c o  m*/
    System.out.println(v1);
    Object v2 = objMap.get(o2);
    System.out.println(v2);

    System.out.println(objMap);
}