Example usage for java.util Hashtable put

Introduction

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

Prototype

public synchronized V put(K key, V value)

Source Link

Document

Maps the specified key to the specified value in this hashtable.

Usage

From source file:Main.java

public static void main(String[] args) {
    Hashtable<String, String> ht = new Hashtable<String, String>();

    ht.put("1", "One");
    ht.put("2", "Two");
    ht.put("3", "Three");

    boolean blnExists = ht.contains("Two");
    System.out.println("Two exists in Hashtable ? : " + blnExists);
}

From source file:Main.java

public static void main(String[] s) {
    Hashtable<String, String> table = new Hashtable<String, String>();
    table.put("key1", "value1");
    table.put("key2", "value2");
    table.put("key3", "value3");

    System.out.println(table.isEmpty());
    System.out.println(table.size());
}

From source file:Main.java

public static void main(String[] s) {
    Hashtable<String, String> table = new Hashtable<String, String>();
    table.put("key1", "value1");
    table.put("key2", "value2");
    table.put("key3", "value3");

    table.clear();//from   w  w w .  j ava2s. c  o  m

    System.out.println(table);
}

From source file:Main.java

public static void main(String[] s) {
    Hashtable<String, String> table = new Hashtable<String, String>();
    table.put("key1", "value1");
    table.put("key2", "value2");
    table.put("key3", "value3");

    table.remove("key1");

    System.out.println(table);/*from   ww  w.jav  a 2 s .  com*/
}

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  va 2 s .c o m*/
    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[] s) {
    Hashtable<String, String> table = new Hashtable<String, String>();
    table.put("key1", "value1");
    table.put("key2", "value2");
    table.put("key3", "value3");

    Hashtable tableCopy = (Hashtable) table.clone();

    System.out.println(tableCopy);

}

From source file:Main.java

public static void main(String[] args) {
    Hashtable<String, String> ht = new Hashtable<String, String>();

    ht.put("1", "One");
    ht.put("2", "Two");
    ht.put("3", "Three");

    Enumeration e = ht.elements();

    while (e.hasMoreElements()) {
        System.out.println(e.nextElement());
    }//from  w  w w. j a va2  s  .c  o m
}

From source file:Main.java

public static void main(String[] args) {
    Hashtable<String, String> ht = new Hashtable<String, String>();

    ht.put("1", "One");
    ht.put("2", "Two");
    ht.put("3", "Three");

    Enumeration e = ht.keys();//from   w w w.  j a va2 s .  c om

    while (e.hasMoreElements()) {
        System.out.println(e.nextElement());
    }
}

From source file:MainClass.java

public static void main(String[] args) {
    String data;/*ww  w .j ava 2s .c  o m*/
    String msg;

    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();
    while (e.hasMoreElements())
        System.out.println(e.nextElement());

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

From source file:MainClass.java

public static void main(String args[]) throws Exception {
    Hashtable hash = new Hashtable(89);
    hash.put("one", "two");
    hash.put("two", "three");
    hash.put("three", "four");
    hash.put("four", "five");
    System.out.println(hash);//  www  .j  av  a  2 s  .  c  om
    System.out.println(hash.size());
    Enumeration e = hash.keys();
    while (e.hasMoreElements()) {
        String key = (String) e.nextElement();
        System.out.println(key + " : " + hash.get(key));
    }
    Set set = hash.entrySet();
    Iterator it = set.iterator();
    while (it.hasNext()) {
        Map.Entry entry = (Map.Entry) it.next();
        System.out.println(entry.getKey() + " : " + entry.getValue());
    }
}