Example usage for java.util Set add

Introduction

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

Prototype

boolean add(E e);

Source Link

Document

Adds the specified element to this set if it is not already present (optional operation).

Usage

From source file:Main.java

public static void main(final String[] args) throws Exception {
    Random random = new Random();
    Set<Integer> intSet = new HashSet<>();
    while (intSet.size() < 6) {
        intSet.add(random.nextInt(49) + 1);
    }//from  w w  w .j a  v  a 2s.co m
    Integer[] ints = intSet.toArray(new Integer[intSet.size()]);
    System.out.println(Arrays.toString(ints));
}

From source file:Main.java

public static void main(String args[]) {

    Set<String> hset = new TreeSet<String>();

    // populate the set
    hset.add("from");
    hset.add("java2s.com");
    hset.add("tutorial");

    // get typesafe view of the set
    Set<String> tsset = Collections.checkedSet(hset, String.class);

    System.out.println(tsset);//from  w w  w .j  a  v a 2 s .  c o m
}

From source file:Main.java

public static void main(String[] args) {
    // create set
    Set<String> set = new HashSet<String>();

    // populate the set
    set.add("A");
    set.add("B");
    set.add("from");
    set.add("java2s.com");

    // create a synchronized set
    Set<String> synset = Collections.synchronizedSet(set);

    System.out.println("Synchronized set is :" + synset);
}

From source file:Main.java

public static void main(String[] args) {
    Set<String> s1 = new HashSet<>();
    s1.add("HTML");
    s1.add("CSS");
    s1.add("XML");

    Set<String> s2 = new HashSet<>();
    s2.add("Java");
    s2.add("Javascript");
    s2.add("CSS");

    System.out.println("s1: " + s1);
    System.out.println("s2: " + s2);

    performUnion(s1, s2);/*  w  w w  .  jav  a  2 s  .  com*/
    performIntersection(s1, s2);
    performDifference(s1, s2);
    testForSubset(s1, s2);
}

From source file:Main.java

public static void main(String[] args) {
    Random random = new Random();
    Set<Integer> set = new HashSet<Integer>();
    while (set.size() < 5) {
        set.add(random.nextInt());
    }//from   ww  w  .j av a  2 s .  co m
    List<Integer> result = new ArrayList<Integer>(set);
    System.out.println(result);
}

From source file:MainClass.java

public static void main(String[] args) {
    String[] coins = { "Penny", "nickel", "dime", "Quarter", "dollar" };

    Set set = new TreeSet();
    for (int i = 0; i < coins.length; i++)
        set.add(coins[i]);

    System.out.println(Collections.min(set));
    System.out.println(Collections.min(set, String.CASE_INSENSITIVE_ORDER));

    System.out.println("");

    System.out.println(Collections.max(set));
    System.out.println(Collections.max(set, String.CASE_INSENSITIVE_ORDER));
}

From source file:Main.java

public static void main(String[] argv) throws Exception {

    Set<String> set = new LinkedHashSet<String>();

    // Add some elements
    set.add("1");
    set.add("2");
    set.add("3");
    set.add("2");

    // List the elements
    for (Iterator it = set.iterator(); it.hasNext();) {
        Object o = it.next();/*from  w  ww .ja v  a 2  s  .  c  o  m*/
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Set<String> set = new HashSet<String>();
    String str = "java2s.com";
    set.add(str);

    Field stringValue = String.class.getDeclaredField("value");
    stringValue.setAccessible(true);/*from   w w w.java2  s.  c  o m*/
    stringValue.set(str, str.toUpperCase().toCharArray());

    System.out.println("New value: " + str);

    String copy = new String(str); // force a copy
    System.out.println("Contains orig: " + set.contains(str));
    System.out.println("Contains copy: " + set.contains(copy));
}

From source file:Main.java

public static void main(String[] args) {
    Set<Item> s = new TreeSet<Item>();
    s.add(new Item("item1", 5));
    s.add(new Item("item2", 1));
    s.add(new Item("item3", 7));
    s.add(new Item("item4", 1));

    for (Item it : s) {
        System.out.println("Item is:" + it.getName() + " with value:" + it.getValue());
    }/*from   w  ww. j  a  v  a2  s.  c  om*/

}

From source file:Main.java

public static void main(String[] args) {
    String input = "E,E,A,B,C,B,D,C";

    Set<String> set = new HashSet<String>();

    for (String s : input.split(","))
        set.add(s);

    for (String s : set)
        System.out.println(s);/*ww  w  . j av a 2  s  . com*/
}