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()

Source Link

Document

Constructs a new, empty set; the backing HashMap instance has default initial capacity (16) and load factor (0.75).

Usage

From source file:Main.java

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

    System.out.println(hs.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.contains(new Integer("3")));
}

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("HashSet contains.." + hSet);

}

From source file:Main.java

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

    // populate hash set
    newset.add("Learning");
    newset.add("from");
    newset.add("java2s.com");

    System.out.println("Size of the set: " + newset.size());
}

From source file:Main.java

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

    // populate hash set
    newset.add("Learning");
    newset.add("from");
    newset.add("java2s.com");

    // checking elements in hash set
    System.out.println("Hash set values: " + newset);
}

From source file:HashSetDemo.java

public static void main(String args[]) {

    HashSet<String> hs = new HashSet<String>();

    hs.add("B");/*from w  w w  .j  a v a  2s . c o m*/
    hs.add("A");
    hs.add("D");
    hs.add("E");
    hs.add("C");
    hs.add("F");

    System.out.println(hs);
}

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);// w  ww . j  av a 2 s.  c  o  m
}

From source file:Main.java

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

    // populate hash set
    newset.add("Learning");
    newset.add("from");
    newset.add("java2s.com");

    // check the existence of element
    boolean exist = newset.contains("Simply");

    System.out.println("Is the element 'Simply' exists: " + exist);
}

From source file:Main.java

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

    // populate hash set
    newset.add("Learning");
    newset.add("from");
    newset.add("java2s.com");

    // check if the has set is empty
    boolean isempty = newset.isEmpty();

    System.out.println("Is the hash set empty: " + isempty);
}

From source file:Main.java

public static void main(String args[]) {
    Set set = new HashSet();
    Set set2 = new HashSet();
    StringBuffer buff1 = new StringBuffer("Irish Setter");
    StringBuffer buff2 = new StringBuffer("Irish Setter");
    set.add(buff1);/*from  www  .  jav a 2 s . c om*/
    set2.add(buff2);
    System.out.println(set.addAll(set2));
    System.out.println(set.addAll(set));
}