Datatype conversion in Java (Typecasting)

How to do basic data type conversion in Java

•     Convert Integer to String
•     BigDecimal to Integer
•     Integer to BigDecimal
•     Double to Integer
•     Integer to double

package practiceJava;

import java.math.BigDecimal;

public class TypeConversion {
    public static void main(String[] args) {
        /*Convert String to Integer*/
        String name = "1234";
        Integer nm = Integer.parseInt(name);
        System.out.println("Name in Integer-->" + nm);
    }


    /*Convert Integer to String*/

    Integer a = 23;
    String num = a.toString();

    /*BigDecimal to Integer*/

    BigDecimal nom = new BigDecimal(450.9);
    Integer nomInt = nom.intValue();

    /*Integer to BigDecimal*/

    Integer cm = 45;
    BigDecimal cmBd = new BigDecimal(cm);
    
    /*Double to Integer*/

    double sys = 3;
    Integer sysInt = new Integer((int)sys);
   

   /*Integer to double*/

    Integer sd = 456;
    double sdDb = sd.doubleValue();


}

Add Serial No. in Table in ADF, Auto Increment column in ADF table

ADF provides easy way to add a autoincrement column in table to make Serial No. or Sequence Column for table ,thats value autoincrements with no.of rows in table .
You have to follow these steps to do this.

• Go to tabel properties (property Inspector) and set VarStatus to vs

•  Now add a column in table and drop an output text inside this new added column

• Select output text and Go to its property inspector and set value to #{vs.index+1} as it is selected in Expression Builder by going through- 

ExpressionBuilder----->JspObjects--->VS---->index

• You have done now run your page and you can see a serial no. column

GTalk (Google Talk) integration with Java

Hello All

Google Talk is most popular chat client that use your gmail login authentication, and after this tutorial you will be able to create your own Gtalk (if you use swing ), this tutorial shows how to integrate Gtalk with Java.

This example uses Smack API, Smack is an Open Source XMPP (Jabber) client library for instant messaging and presence. A pure Java library, it can be embedded into your applications to create anything from a full XMPP client to simple XMPP integrations such as sending notification messages and presence-enabling devices.

• Code to integrate Google talk with java

 package chat_Server;
 import org.jivesoftware.smack.ConnectionConfiguration;
 import org.jivesoftware.smack.XMPPConnection;
 import org.jivesoftware.smack.XMPPException;
 import org.jivesoftware.smack.packet.Message;
 public class GtalkChat {
   private static String username = "ashishawasthi000@gmail.com";
   private static String password = "XXXXXXX";
   ConnectionConfiguration connConfig;
   XMPPConnection connection;
   public GtalkChat() throws XMPPException {
     connConfig = new ConnectionConfiguration("talk.google.com", 5222, "gmail.com");
     connection = new XMPPConnection(connConfig);
     connection.connect();
     connection.login(username, password);
   }
   public void sendMessage(String to, String message) {
     Message msg = new Message(to, Message.Type.chat);
     msg.setBody(message);
     connection.sendPacket(msg);
   }
   public void disconnect() {
     connection.disconnect();
   }
   public static void main(String[] args) throws XMPPException {
     GtalkChat gtalkChat = new GtalkChat();
     gtalkChat.sendMessage("abcdefg@gmail.com",
                "Hii this message is send using Java and Google talk integration.");
     gtalkChat.disconnect();
   }
 }  

• Change line 7 and line 8 with your username and password respectively




• Chage line 27 with receiver's email id and type your message
• Now download SMACK API from its website or click on link below

Download Smack 3_2_2 

• Extract Smack.rar and Add Smack.jar and Smackx.jar to your project
• Now run the code
• This code will only send chat , try to receive using your own code