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) throws Exception {
    Connection conn = getMySqlConnection();
    // Set up the environment for creating the initial context
    Hashtable env = new Hashtable(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.fscontext.RefFSContextFactory");
    env.put(Context.PROVIDER_URL, "file:/jdbc");

    Context context = new InitialContext(env);
    NamingEnumeration list = context.list("jdbc");

    while (list.hasMore()) {
        NameClassPair nc = (NameClassPair) list.next();
        System.out.println(nc);//from  w  w  w  .  j  a va 2s .c  o  m
    }

    OracleDataSource ods = new OracleDataSource();
    ods.setDriverType("thin");
    ods.setServerName("localhost");
    ods.setNetworkProtocol("tcp");
    ods.setDatabaseName("databaseName");
    ods.setPortNumber(1521);
    ods.setUser("userName");
    ods.setPassword("Password");

    Context ctx = new InitialContext();
    ctx.bind("file:/jdbc/mydb", ods);

    // Get the initial context of JNDI and lookup the datasource.
    InitialContext ic = new InitialContext();
    javax.sql.DataSource ds = (javax.sql.DataSource) ic.lookup("file:/jdbc/mydb");
    // Set the optional printwriter where the trace log is to be directed.
    ds.setLogWriter(new PrintWriter(new FileOutputStream("c:/datasource.log")));
    Connection con1 = ds.getConnection();
    Connection con2 = ds.getConnection("userName", "password");
    conn.close();

}

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From source file:Rename.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/ou=People,o=JNDITutorial");

    try {/* w w w. ja  va2 s  .com*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Rename to Scott S
        ctx.rename("cn=Scott Seligman", "cn=Scott S");

        // Check that it is there using new name
        Object obj = ctx.lookup("cn=Scott S");
        System.out.println(obj);

        // Rename back to Scott Seligman
        ctx.rename("cn=Scott S", "cn=Scott Seligman");

        // Check that it is there with original name
        obj = ctx.lookup("cn=Scott Seligman");
        System.out.println(obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Rename failed: " + e);
    }
}

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From source file:Lookup.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {//from w  ww  .ja v a 2s.  com
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Perform lookup and cast to target type
        LdapContext b = (LdapContext) ctx.lookup("cn=Rosanna Lee,ou=People");

        System.out.println(b);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Lookup failed: " + e);
    }
}

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From source file:LookupLdapName.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/");

    try {/*from  w  ww  . j  a v a  2  s .c om*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // A string representation of an LDAP name
        LdapName dn = new LdapName("ou=People,o=JNDITutorial");

        // Perform the lookup using the dn
        Object obj = ctx.lookup(dn);

        System.out.println(obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Lookup failed: " + e);
    }
}

---

From source file:Shared.java

public static void main(String[] args) {
    // Set up environment for creating initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {/* w w w .  j  a va 2 s. c o  m*/
        // Create initial context
        DirContext ctx = new InitialDirContext(env);

        // Get a copy of the same context
        Context ctx2 = (Context) ctx.lookup("");

        // Get a child context
        Context ctx3 = (Context) ctx.lookup("ou=NewHires");

        // do something useful with ctx, ctx2, ctx3

        // Close the contexts when we're done
        ctx.close();
        ctx2.close();
        ctx3.close();
    } catch (NamingException e) {
        e.printStackTrace();
    }
}

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From source file:Timeout.java

public static void main(String[] args) {
    // Set up environment for creating initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    // Specify timeout to be 5 seconds
    env.put("com.sun.jndi.ldap.connect.timeout", "5000");

    try {//from  www .j av a 2  s.c o  m
        // Create initial context
        DirContext ctx = new InitialDirContext(env);

        System.out.println(ctx.lookup("ou=NewHires"));

        // do something useful with ctx

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        e.printStackTrace();
    }
}

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From source file:RenameInterior.java

public static void main(String[] args) {

    // Set up environment for creating initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {/*from  w w  w .ja  v a2  s  . c  o m*/
        // Create initial context
        DirContext ctx = new InitialDirContext(env);

        // Perform rename
        ctx.rename("ou=NewHires", "ou=OldHires");

        // Check that it worked
        System.out.println(ctx.lookup("ou=OldHires"));

        // Revert change
        ctx.rename("ou=OldHires", "ou=NewHires");

        // Check that we are back at our original setup
        System.out.println(ctx.lookup("ou=NewHIres"));

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        e.printStackTrace();
    }
}

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From source file:Unbind.java

public static void main(String[] args) {

    // Set up the environment for creating the initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {/*from   w w w .  j a  v a 2 s .  c  o  m*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Remove the binding
        ctx.unbind("cn=Favorite Fruit");

        // Check that it is gone
        Object obj = null;
        try {
            obj = ctx.lookup("cn=Favorite Fruit");
        } catch (NameNotFoundException ne) {
            System.out.println("unbind successful");
            return;
        }

        System.out.println("unbind failed; object still there: " + obj);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Operation failed: " + e);
    }
}

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From source file:BadPasswd.java

public static void main(String[] args) {

    // Set up environment for creating initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    // Authenticate as S. User and give incorrect password
    env.put(Context.SECURITY_AUTHENTICATION, "simple");
    env.put(Context.SECURITY_PRINCIPAL, "cn=S. User, ou=NewHires, o=JNDITutorial");
    env.put(Context.SECURITY_CREDENTIALS, "notmysecret");

    try {/*from  w  w  w .  ja v a2s  .  c om*/
        // Create initial context
        DirContext ctx = new InitialDirContext(env);

        System.out.println(ctx.lookup("ou=NewHires"));

        // do something useful with ctx

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        e.printStackTrace();
    }
}

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From source file:SerObj.java

public static void main(String[] args) {

    // Set up environment for creating initial context
    Hashtable<String, Object> env = new Hashtable<String, Object>(11);
    env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
    env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

    try {/*w  ww.j ava 2 s . c om*/
        // Create the initial context
        Context ctx = new InitialContext(env);

        // Create object to be bound
        Button b = new Button("Push me");

        // Perform bind
        ctx.bind("cn=Button", b);

        // Check that it is bound
        Button b2 = (Button) ctx.lookup("cn=Button");
        System.out.println(b2);

        // Close the context when we're done
        ctx.close();
    } catch (NamingException e) {
        System.out.println("Operation failed: " + e);
    }
}

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