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) {
    TreeSet<Integer> tSet = new TreeSet<Integer>();

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

    System.out.println("TreeSet before removal : " + tSet);
    tSet.clear();//  www. j a va  2s .  c o  m
    System.out.println("TreeSet after removal : " + tSet);
    System.out.println("Is TreeSet empty ? " + tSet.isEmpty());
}

From source file:Main.java

public static void main(String[] args) {
    HashSet<Integer> hSet = new HashSet<Integer>();

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

    Object[] objArray = hSet.toArray();

    for (Object obj : objArray)
        System.out.println(obj);//from  w  w w. ja  v a  2 s.  c  om
}

From source file:Main.java

public static void main(String[] args) {
    Integer[] arrayToSort = new Integer[] { new Integer(5), new Integer(89), new Integer(16), new Integer(2) };

    Arrays.sort(arrayToSort, Collections.reverseOrder());

    for (Integer i : arrayToSort) {
        System.out.println(i.intValue());
    }/*from   w w  w.  ja v a 2  s.c  o  m*/
}

From source file:Main.java

public static void main(String[] args) {
    ArrayList<Integer> al = new ArrayList<Integer>();
    al.add(new Integer(1));
    al.add(new Integer(2));
    al.add(new Integer(3));
    al.add(new Integer(4));
    al.add(new Integer(5));

    System.out.println("contents of al : " + al);
    Object ia[] = al.toArray(); // get array
    int sum = 0;//  ww  w . j a  v  a  2 s  . c  o m

    for (int i = 0; i < ia.length; i++) {
        sum += ((Integer) ia[i]).intValue();
    }
    System.out.println("Sum is :" + sum);
}

From source file:Main.java

public static void main(String[] args) {
    HashSet<Integer> hSet = new HashSet<Integer>();

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

    System.out.println(hSet);// w ww.  j  a  va 2 s.c  om

    hSet.clear();

    System.out.println(hSet);

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

}

From source file:Main.java

public static void main(String[] args) {
    HashSet<Integer> hSet = new HashSet<Integer>();

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

    System.out.println(hSet);//from  w w  w .  j  a v a2  s  . c  om

    boolean blnRemoved = hSet.remove(new Integer("2"));

    System.out.println(blnRemoved);

    System.out.println(hSet);

}

From source file:Main.java

public static void main(String[] argv) {
    List<Integer> intlist = new ArrayList<Integer>();

    intlist.add(new Integer(123));
}

From source file:Main.java

public static void main(String[] argv) {

    List<Number> numlist = new ArrayList<Number>();

    numlist.add(new Integer(123));
    numlist.add(new Float(123));
}

From source file:Main.java

public static void main(String[] args) {
    LinkedHashSet<Integer> lhashSet = new LinkedHashSet<Integer>();

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

    System.out.println(lhashSet);
}

From source file:Main.java

public static void main(String[] args) {
    LinkedHashSet<Integer> lhashSet = new LinkedHashSet<Integer>();

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

    LinkedHashSet<Integer> lhashSet2 = new LinkedHashSet<Integer>(lhashSet);
}