Example usage for java.util Hashtable Hashtable

Introduction

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

Prototype

Hashtable(Void dummy) 

Source Link

Document

A constructor chained from Properties keeps Hashtable fields uninitialized since they are not used.

Usage

From source file:Main.java

public static void main(String args[]) {

    Hashtable<Integer, String> htable = new Hashtable<Integer, String>(10);

    // put values into the table
    htable.put(1, "A");
    htable.put(2, "B");
    htable.put(3, "C");
    htable.put(4, "from java2s.com");

    // check table content
    System.out.println("Hash table content: " + htable);

    // clear the table
    htable.clear();/*from   ww  w.j  a  v  a2  s .  c  om*/

    // check content after clear
    System.out.println("Hash table content after clear: " + htable);
}

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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();/*  w  ww .j  a va  2s  .  c  o  m*/
    while (e.hasMoreElements())
        System.out.println(e.nextElement());

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

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From source file:MainClass.java

public static void main(String[] args) {
    String data;/*from   ww  w  .  j av  a2s.  com*/
    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());
}

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From source file:Modify2Example.java

public static void main(String args[]) {
    Hashtable env = new Hashtable(11);

    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://MyHost/o=JNDIExample");
    try {//  w ww.  jav  a2s . c om
        DirContext dctx = new InitialDirContext(env);

        ModificationItem[] mods = new ModificationItem[3];
        mods[0] = new ModificationItem(DirContext.REPLACE_ATTRIBUTE, new BasicAttribute("department", "sales"));
        mods[1] = new ModificationItem(DirContext.ADD_ATTRIBUTE, new BasicAttribute("quota", "$1"));
        mods[2] = new ModificationItem(DirContext.REMOVE_ATTRIBUTE, new BasicAttribute("assistant"));

        dctx.modifyAttributes("cn=Name, ou=People", mods);
    } catch (Exception e) {
        System.out.println(e);
    }
}

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From source file:FilterExample.java

public static void main(String[] argc) throws Exception {
    Hashtable env = new Hashtable(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://MyHost/o=JNDIExample");

    DirContext dctx = new InitialDirContext(env);

    String filter = "(&(cn=E*)(account>1005))";

    NamingEnumeration result = dctx.search("ou=People", filter, null);

    while (result.hasMore()) {
        SearchResult sr = (SearchResult) result.next();
        System.out.println("Result = " + sr.getName());
    }/*w  w  w.  j a  va2 s.c  o  m*/

}

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From source file:Modify1Example.java

public static void main(String args[]) {
    Hashtable env = new Hashtable(11);

    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://MyHost/o=JNDIExample");
    try {// www  . ja  v a2s .  c o m
        DirContext dctx = new InitialDirContext(env);
        Attributes attrs = new BasicAttributes(true);
        attrs.put(new BasicAttribute("email", "name@site.com"));
        attrs.put(new BasicAttribute("website"));

        dctx.modifyAttributes("cn=Name, ou=People", DirContext.ADD_ATTRIBUTE, attrs);
    } catch (Exception e) {
        System.out.println(e);
    }
}

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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);/*w w w. j  a  va2 s .co m*/
    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());
    }
}

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From source file:SearchScopeExample.java

public static void main(String[] argc) {
    Hashtable env = new Hashtable(11);

    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://MyHost/o=JNDIExample");

    try {/*from  ww  w  . ja  va  2  s  .com*/
        DirContext dctx = new InitialDirContext(env);

        String filter = "(&(cn=S*)(account>1000))";

        String[] attrIDs = { "cn", "email" };
        SearchControls sc = new SearchControls();
        sc.setReturningAttributes(attrIDs);
        sc.setSearchScope(SearchControls.SUBTREE_SCOPE);

        NamingEnumeration result = dctx.search("ou=People", filter, sc);

        while (result.hasMore()) {
            SearchResult sr = (SearchResult) result.next();
            System.out.println("Result = " + sr.getName());
        }
    } catch (NamingException e) {
        System.out.println(e);
    }
}

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From source file:SearchControlsExample.java

public static void main(String[] argc) throws Exception {
    Hashtable env = new Hashtable(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://MyHost/o=JNDIExample");

    DirContext dctx = new InitialDirContext(env);

    String filter = "(&(cn=S*)(account>1005))";

    String[] attrIDs = { "cn", "email" };
    SearchControls sc = new SearchControls();
    sc.setReturningAttributes(attrIDs);// w ww .j  a  v  a  2  s .  co m

    NamingEnumeration result = dctx.search("ou=People", filter, sc);

    while (result.hasMore()) {
        SearchResult sr = (SearchResult) result.next();
        System.out.println("Result = " + sr.getName());
    }

}

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From source file:AttributeExample.java

public static void main(String[] argc) throws Exception {
    Hashtable env = new Hashtable(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");

    env.put(Context.PROVIDER_URL, "ldap://MyHost/o=JNDIExample");
    DirContext dctx = new InitialDirContext(env);
    Attributes attrs = new BasicAttributes(true);
    attrs.put(new BasicAttribute("email"));
    attrs.put(new BasicAttribute("website", "www.pri.com"));

    NamingEnumeration result = dctx.search("ou=People", attrs);

    while (result.hasMore()) {
        SearchResult sr = (SearchResult) result.next();
        System.out.println("Result = " + sr.getName());
        Attributes srchAttrs = sr.getAttributes();

        NamingEnumeration attributes = srchAttrs.getAll();

        while (attributes.hasMore()) {
            Attribute attr = (Attribute) attributes.next();
            System.out.println("Attribute: " + attr.getID());
            NamingEnumeration values = attr.getAll();
            while (values.hasMore()) {
                Object value = values.next();
                System.out.println("Value = " + value);
            }/*from   w w w. j ava  2  s .c  o  m*/
        }
    }
}

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