Free Code,Example Code

How to GBK(GB2312) and UTF-8 encoding conversion between in JavaScript

2008-11-14T05:51:00.000-08:00

following js code show to how to convert text between Simplified Chinese GB 2312 text strings into UTF8 using JavaScript. GB2312UTF8 = { Dig2Dec : function(s){ var retV = 0; if(s.length == 4){ for(var i = 0; i < 4; i ++){ retV += eval(s.charAt(i)) * Math.pow(2, 3 - i); } return retV; } return -1; } , Hex2Utf8 : function

How to send messages using PHP

2008-07-07T02:22:00.000-07:00

sendMsg is a class which allows you to send a message to a contact from a specified account. It logs in, changes status to online, creates a new IM session with the target user, sends the message and ends both connections. The Messenger server imposes a limit on how many IM sessions can be created per minute, so the script is not suited for sending messages to large numbers of contacts within

How to send SMS in J2ME

2008-06-25T20:17:00.000-07:00

The sample code on how to send SMS through J2ME. import java.io.IOException; import javax.microedition.io.Connector; import javax.wireless.messaging.MessageConnection; import javax.wireless.messaging.TextMessage; /** Sends an SMS message */ public class SMSender implements Runnable { private String smsReceiverPort; private String message; private String phoneNumber; public SMSender(

Using the Comparable interface to compare and sort objects

2008-06-16T01:07:00.000-07:00

This code example shows how to compare and sort objects by implementing the Comparable interface. The code consists of a class called Main and another class called Car. The Main class creates a few instances of the Car class (which is the one that implements the Comparable interface) and them compare them and also sort them. The Car class has three attributes, make, year and mileage. Only

How to read floppy disk information in C++

2008-06-12T02:35:00.000-07:00

Reads information from an inserted floppy disk. like clusters, sectors etc. //Disk.cpp //Reads floppy disk properties(Ensure floppy is avaiable in drive) //Renjith Joseph //Perumbavoor P.O, Ernakulam Dist. Kerala State, india //E-mail: renjithmathewjoseph@hotmail.com //All rights reserved. #include #include #include void main(){ clrscr(); //Floppy Drive

An implementation of Stack datastructure in C++

2008-06-12T02:27:00.000-07:00

#include #include #include #include using namespace std; #if !defined __STACK_H #define __STACK_H namespace stk{ class Stack{ private: int *p; int top,length; string str()const; public: Stack(); Stack(const int); Stack(const Stack&); ~Stack(); void push(int); int pop(); int get_length()

How to run external system commands in Java

2008-06-11T18:05:00.000-07:00

Running a system command is relatively simple - once you've seen it done the first time. It involves the use of two Java classes, the Runtime class and the Process class. Basically, you use the exec() method of the Runtime class to run the command as a separate process. This returns a Process object for managing the subprocess. Then you use the getInputStream() and getErrorStream() methods of

Multi-threaded programming - Multithreaded chat application in java

2008-06-11T02:01:00.000-07:00

This is the server and the client program thatI wrote basically it gives u a good understanding of how sockets work in java . /*This is the server for the MultiThreadedChatClient program thatI wrote basically it gives u a good understanding of how sockets work in java Author: Mohammed Alfaaz email:alfaaz@gmail.com */ import java.io.*; import java.net.*; public class MultiThreadChatServer

How to add watermark to images in java

2008-06-10T07:41:00.000-07:00

The tool to adding watermark to images,recommended markImage () methods to create watermark image. You can use it in jsp, servlet, app. import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import

How to access a database by ADO with JavaScript

2008-05-12T08:34:00.000-07:00

I have not found any sample that shows database access with javaScript. Well, I created one. It is very simple since Javascript has the activeXObject that allow us to call an external object in the same way that vbscript uses CreateObject. //************************************** // Name: ADO With JavaScript // Description:I have not found any sample that shows database access with javaScript.

Encrypts a string by the given "key"

2008-05-12T07:57:00.000-07:00

A more slightly advanced encryption.Encrypts a string by the given "key". import javax.swing.JOptionPane; public class betterencryptor { public static void main(String[] args) { int key1 = Integer.parseInt(JOptionPane.showInputDialog("Input a key, a random large *prime* number:")); String message1 = JOptionPane.showInputDialog("Input a string to be encrypted/decrypted:"); String crypt1

How to create a zip file

2008-03-12T02:34:00.000-07:00

This code example shows how to create a zip file. What we do is to create an input stream from the file we want to compress, and while we read from it we write the contents to an output stream. This output stream is of type ZipOutputStream which takes an FileOutputStream as parameter. Next we have to add a zip entry to the output stream before we start writing to it. We will also clean up by

Write to file using BufferedOutputStream

2008-02-21T06:29:00.000-08:00

This code snippet shows how to write to a file using a BufferedOuputStream. Now it should be said that if you want to write text to a file you should probably find it easier to go with a Writer class like the BufferedWriter instead. The write method of the BufferedOuputStream takes either a byte array or an int as argument so that is why we have to call getBytes() on any String that we provide to

Read from file with BufferedInputStream

2008-02-21T06:28:00.000-08:00

This example shows how to read the contents of a file using a BufferedInputStream. There are a couple of ways to do so, and in this example we use a byte array to store the data read. We loop through the file contents and fill out buffer up to the size of the buffer array until there are no more data left to read. It possible to read from the file one byte at a time, but to use a buffer is more

Read each line in a comma separated file into an array

2008-02-21T06:14:00.000-08:00

In this example we read the lines of a comma separated file and split the values into an array. This is done fairly easy with the split() method, which takes a separator as an argument and returns an array of Strings. import java.io.BufferedReader; import java.io.FileReader; import java.io.FileNotFoundException; import java.io.IOException; public class CsvTest { public void readFile() {

Base64 encoding and Base64 decoding in C

2008-02-19T05:57:00.000-08:00

#include "lib.h" /** * characters used for Base64 encoding */ const char *BASE64_CHARS = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; /** * encode three bytes using base64 (RFC 3548) * * @param triple three bytes that should be encoded * @param result buffer of four characters where the result is stored */ void _base64_encode_triple(unsigned char triple[3],

How to quickly sort Vector of objects that implement the Comparable interface in java

2008-02-19T05:35:00.000-08:00

import java.util.Vector; /** * Implements the quicksort algorithm. * Sorts Vectors of objects that implement the Comparable interface. * The sort is based on Comparable.compare(obj) method. * @see Comparable */ public class QuickSorter { /** * performs the sort. * * @param vect the Comparable Objects to be sorted. */ public static void sort(Vector vect) {

Listing the system properties

2008-02-18T07:01:00.000-08:00

By listing the properties of the system you run the program on you can find out a lot about it. Your program maybe should act in a certain way depending on what operating system it's currently on. This code example shows how to retrieve the properties and how to enumerate through and print them out to the console. import java.util.Enumeration; import java.util.Properties; /** * * @author

Check if a String is a valid date

2008-02-18T06:57:00.000-08:00

This example checks if a String is a valid date by parsing the String with an instance of the SimpleDateFormat class and returns true or false. import java.text.SimpleDateFormat; import java.text.ParseException; public class DateTest { public boolean isValidDate(String inDate) { if (inDate == null) return false; //set the format to use as a constructor argument

how to determine window size in javascript

2008-02-18T06:37:00.000-08:00

Use this snippet to determine the size of an open window. Can be used in many different situations, e.g., for setting the size of a div.

javascript remove attribute method

2007-06-13T02:59:00.000-07:00

removeAttribute() Syntax, Parameters and Note Removes the specified attribute value from the element. Returns true (successful) or false (failed). Syntax: document.getElementById("elementID").removeAttribute(param1, param2) document.all.elementID.removeAttribute(param1, param2) // IE only Parameters: param1 Required; the name of the attribute. param2 Optional; the type

javascript create attribute method

2007-06-13T02:45:00.000-07:00

createAttribute() Syntax, Parameters and Note Creates an attribute node. It also works with user-defined XML elements, allowing for the creation of custom attributes. Syntax: document.createAttribute(param1) Parameters: param1 Required; the name of the attribute. createAttribute() example code

A block of text to use as input to the regular expression matcher

2007-06-04T03:12:00.000-07:00

// : c12:TheReplacements.java // From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002 // www.BruceEckel.com. See copyright notice in CopyRight.txt. import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Arrays; import

How to catch TAB key press with JavaScript in Firefox,Safari,Opare & IE

2007-06-01T02:25:00.000-07:00

The example code is tested in IE, Firefox and Opare. Probably also works in Netscape as well as others like Safari.