Example usage for java.util HashSet HashSet

Introduction

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

Prototype

public HashSet(int initialCapacity)

Source Link

Document

Constructs a new, empty set; the backing HashMap instance has the specified initial capacity and default load factor (0.75).

Usage

From source file:Main.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    Set<String> set = new HashSet<String>(Arrays.asList(elements));

    Object[] arrObj = set.toArray();

    for (int i = 0; i < arrObj.length; i++) {
        System.out.println(arrObj[i]);
    }/*from   w ww  .j  a v a 2 s  .  c  o m*/

    System.out.println(set);
}

From source file:MainClass.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    Set set = new HashSet(Arrays.asList(elements));

    String[] strObj = new String[set.size()];

    strObj = (String[]) set.toArray(strObj);

    for (int i = 0; i < strObj.length; i++) {
        System.out.println(strObj[i]);
    }/*from ww w.j  av a  2 s. c o m*/

    System.out.println(set);
}

From source file:MainClass.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    Set set = new HashSet(Arrays.asList(elements));

    elements = new String[] { "E", "F" };

    set.addAll(Arrays.asList(elements));

    System.out.println(set);//from   ww  w. j  a  v a  2 s.  co m

    set.clear();

    System.out.println(set);
}

From source file:Main.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    HashSet<String> set = new HashSet<String>(Arrays.asList(elements));

    Object[] arrObj = set.toArray();

    for (int i = 0; i < arrObj.length; i++) {
        System.out.println(arrObj[i]);
    }//from www.  ja  v a2  s .  c om

    System.out.println(set);
}

From source file:Main.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    Set<String> set = new HashSet<String>(Arrays.asList(elements));

    elements = new String[] { "E", "F" };

    set.addAll(Arrays.asList(elements));

    System.out.println(set);/*from   ww  w.j  a  v a2 s  .c  o  m*/

    set.clear();

    System.out.println(set);
}

From source file:Main.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    HashSet<String> set = new HashSet<String>(Arrays.asList(elements));

    elements = new String[] { "E", "F" };

    set.addAll(Arrays.asList(elements));

    System.out.println(set);/*  w ww.  j  a  v a2 s.  co  m*/

    set.clear();

    System.out.println(set);
}

From source file:Main.java

public static void main(String args[]) {
    String elements[] = { "I", "P", "E", "G", "P" };
    Set set = new HashSet(Arrays.asList(elements));
    Iterator iter = set.iterator();
    while (iter.hasNext()) {
        System.out.println(iter.next());
    }/*from  ww  w.  j  a v  a  2  s . c om*/
}

From source file:MainClass.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    Set set = new HashSet(Arrays.asList(elements));

    Iterator iter = set.iterator();
    while (iter.hasNext()) {
        System.out.println(iter.next());
    }/*from  w  ww. j a v  a2s.c om*/

}

From source file:Copy.java

public static void main(String args[]) throws Exception {
    String elements[] = { "Irish Setter", "Poodle", "English Setter", "Gordon Setter", "Pug" };
    Set set = new HashSet(Arrays.asList(elements));
    Set set2 = ((Set) ((HashSet) set).clone());
    System.out.println(set2);//from   w ww  .ja  v a 2 s. co  m
    FileOutputStream fos = new FileOutputStream("set.ser");
    ObjectOutputStream oos = new ObjectOutputStream(fos);
    oos.writeObject(set);
    oos.close();
    FileInputStream fis = new FileInputStream("set.ser");
    ObjectInputStream ois = new ObjectInputStream(fis);
    Set set3 = (Set) ois.readObject();
    ois.close();
    System.out.println(set3);
}

From source file:Main.java

public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    HashSet<String> set = new HashSet<String>(Arrays.asList(elements));

    Iterator iter = set.iterator();
    while (iter.hasNext()) {
        System.out.println(iter.next());
    }/*w  w  w  .  ja  v a2  s .c  o  m*/

}