What is the need to Override Hashcode() and equals() method

7:50 AM No Comments

Although there are lots of materials are available on internet and API document about the necessity of the overriding the hashcode() and equals() method in Java but lots of new developers still not able to understand the necessity of hashcode() method. In this article, I will try to explain step by step the need of overriding hashcode() method in Java. Few Thump rules: If two objects are same then they must return same value in hashcode() and equals() method whenever invoked. It is not necessary that two different object must have different hashcode...

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sending sms code

7:05 PM 8 Comments

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.io.UnsupportedEncodingException; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.Proxy; import java.net.URL; //import java.net.URLConnection; import java.net.URLEncoder; import java.util.*; /**  *  * @author sreenath (https://github.com/tacticiankerala/Unofficial-Way2Sms-API-using-JAVA/blob/master/Way2SMS.java) modified by Abhimanyu...

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Change global_name of oracle

8:14 PM No Comments

SQL> SELECT * FROM GLOBAL_NAME; GLOBAL_NAME -------------------------------------------------------------------------------- ORATEMP.REGRESS.RDBMS.DEV.US.ORACLE.COM SQL> ALTER DATABASE RENAME GLOBAL_NAME TO oratemp ; SQL> SELECT * FROM GLOBAL_NA...

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configure glassfish in myeclipse

5:14 PM No Comments

http://glassfishplugins.java.net/eclipse34/index.h...

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Java Database Connectivity (JDBC Tutorial)

7:58 PM No Comments

Java Database Connectivity: JDBC (Java Database Connectivity) is designed to allow users to use SQL(Structured Query Language) to query databases. It makes the tasks of the developers easy as it handles all low-level concerns about particular database types. JDBC is similar to Microsoft’s ODBC with the plus point “Platform Independence”. To use JDBC, you need to have database driver to communicate with the database. Normally drivers are installed while installing the database. Like if you install MS SQL Server, Oracle or DB2, database...

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Change( Screen) Windows display resolution.

7:55 PM No Comments

'Using this code to change Screen Resolution......... or your computer ' this code is use for VB 6.0 '********************** Module***************** Declarations Public Const EWX_LOGOFF = 0 Public Const EWX_SHUTDOWN = 1 Public Const EWX_REBOOT = 2 Public Const EWX_FORCE = 4 Public Const CCDEVICENAME = 32 Public Const CCFORMNAME = 32 Public Const DM_BITSPERPEL = &H40000 Public Const DM_PELSWIDTH = &H80000 Public Const DM_PELSHEIGHT = &H100000 Public Const CDS_UPDATEREGISTRY = &H1 Public Const CDS_TEST = &H4 Public Const DISP_CHANGE_SUCCESSFUL...

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Digital clock by using timer (swing) in Java

7:54 PM 1 Comment

Here is a piece of code to build a Java clock, using swing,         Timer t = new Timer(1000, updateClockAction);         t.start(); ActionListener updateClockAction = new ActionListener() {   public void actionPerformed(ActionEvent e) {       // Assumes clock is a custom component      lblTime.setText(System.currentTimeMillis()+"");       // OR     ...

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Digital clock by using Java

7:53 PM No Comments

Here is a piece of code to build a Java clock, that uses threads, gets the data for time automatically and is not interrupted if you click something else on the window. There are some comments around the code to help you understand what's happening. import java.awt.*; import javax.swing.*;       import java.util.*; class Clock extends JFrame implements Runnable {   Thread runner; //declare global objects   Font clockFont;     ...

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Convert Number to String

7:50 PM No Comments

Convert Number to String in Java using Swing..... (Editor use: Net Bean) firstly create new project. in this project add one Java class file and name this file "EnglishNumberToWords.Java"  and copy following line of code in this file..... *************************Code******************************** package number; import java.text.DecimalFormat; public class EnglishNumberToWords {   private static final String[] tensNames = {     "",   ...

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Upload and Retrieve image using JSP.

7:44 PM No Comments

Upload and Retrieve image using JSP.            Hello friends,  I am write this blog for those programmer are required a code for “how to upload and retrieve images (photos) from server using JSP.” There is two jsp files are used in this project, and this project following libraries are required.         commons-fileupload.jar        commons-fileupload-1.2.1.jar        commons-io-1.4 this...

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