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Created by magnum on September 11, 2011 19:46:09
Last update: September 11, 2011 19:46:09
A pair of C functions convert between an Internet address and a string (ASCII):
#include <arpa/inet.h>
/*
* Returns a poin...
However , these functions do not support IPv6. The new pair is:
#include <arpa/inet.h>
/* Convert a Internet ad...
Examples:
#include <sys/socket.h>
#include <netinet/in.h>...
Created by voodoo on August 12, 2011 14:43:57
Last update: August 14, 2011 15:19:21
#include <stdio.h>
#include <stdlib.h>
i...
Created by voodoo on August 12, 2011 14:44:45
Last update: August 12, 2011 14:44:45
#include <fstream>
#include <iostream>
i...
Created by voodoo on August 12, 2011 12:47:50
Last update: August 12, 2011 13:03:00
Use fstream and seekg :
#include <iostream>
#include <fstream>
i...
With stat :
#include <iostream>
#include <sys/stat.h>
...
Created by alfa on July 15, 2011 13:25:45
Last update: July 15, 2011 13:25:45
Read the whole contents of a file into a String. It's better to read the whole file as bytes and convert to String than to read the file line by line and concatenate the lines.
String getFileContents(String fileName) throws...
Using java.nio :
import java.io.FileInputStream;
import java...
Created by Dr. Xi on July 14, 2011 11:50:28
Last update: July 14, 2011 11:50:28
This is not to make the size of the array smaller, but to remove the leading and trailing spaces in each element.
This works:
String[] a = { " 1 ", " 2 " };
for (int i = 0; ...
This does not work:
for (String s: a) {
s = s.trim();
}
Created by Dr. Xi on June 21, 2011 15:54:00
Last update: June 22, 2011 11:33:09
Demo code for CSV parsing with SuperCSV parser .
Java code:
import java.io.*;
import java.util.List;
imp...
Test with a simple CSV file:
psmith01,CLASS2B,Peter Smith 1,YEAR2,1,N,ADVANCED,...
The parser worked correctly:
Line 1 has 11 values:
|psmith01|
|CLASS2B|...
Test with a more complicated CSV file:
"psmith01 abc", "CLASS2B " , " Peter...
The parser messed up on all three lines:
Line 1 has 5 values:
|psmith01 abc|
|CLASS...
Using two lines input:
"psmith01 abc", "CLASS2B " , " Peter...
It generates an exception:
Line 1 has 5 values:
|psmith01 abc|
|CLASS...
Add a new line in item two:
"One", "Two
", "Three"
Result:
Line 2 has 3 values:
|One|
|Two
|
|...
Created by freyo on May 09, 2011 12:50:52
Last update: May 09, 2011 12:51:54
You can use the android.os.StatFs class to check for available space on the sd card.
Example code:
// import android.os.Environment;
// import...
Created by alfa on April 06, 2011 12:48:44
Last update: April 06, 2011 12:48:44
package com.demo.io;
import java.io.*;
...
Created by Dr. Xi on March 24, 2011 12:11:14
Last update: March 24, 2011 12:22:03
This is the task: your client wants to know how the web application is used. That is pretty easy. A plethora of commercial tools or any of the free log analysis tools such as analog and AWStats would fit the bill. But here's the catch: they want to know not only what pages are visited by how many people and when, but also who logged in and did what. Your application is using form based authentication and therefore, everyone is anonymous in the web access log. What to do? This is a servlet filter that generates a web access log with authenticated user info that can be fed to log analysis tools such as analog and AWStats . Filter code (the output format is Apache...
