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Created by voodoo on September 25, 2012 19:10:19
Last update: September 25, 2012 19:10:19
Here is a list of the most useful targets that the GNU Coding Standards specify (from automake manual ). make all Build programs, libraries, documentation, etc. (same as make). make install Install what needs to be installed, copying the files from the package's tree to system-wide directories. make install-strip Same as make install, then strip debugging symbols. Some users like to trade space for useful bug reports... make uninstall The opposite of make install: erase the installed files. (This needs to be run from the same build tree that was installed.) make clean Erase from the build tree the files built by make all. make distclean Additionally erase anything ./configure created. make check Run the test suite, if any. make installcheck Check the installed programs...
Created by Dr. Xi on November 11, 2011 10:05:22
Last update: November 11, 2011 10:12:01
This is an HTML image tag filter using Java regex. It takes a string, finds the img tags, replaces the src attribute with one provided by the filter, then adds a class name to the class attribute.
import java.util.regex.*;
import java.io.*;
...
Test file:
<div id="HTML snippet">
<img src="img/big/txt-m...
Created by freyo on August 25, 2011 09:07:40
Last update: August 25, 2011 20:45:43
This is a list of built-in Android permission values: Permission Description Since API Level android.permission.ACCESS_CHECKIN_PROPERTIES Allows read/write access to the "properties" table in the checkin database, to change values that get uploaded. 1 android.permission.ACCESS_COARSE_LOCATION Allows an application to access coarse (e.g., Cell-ID, WiFi) location 1 android.permission.ACCESS_FINE_LOCATION Allows an application to access fine (e.g., GPS) location 1 android.permission.ACCESS_LOCATION_EXTRA_COMMANDS Allows an application to access extra location provider commands 1 android.permission.ACCESS_MOCK_LOCATION Allows an application to create mock location providers for testing 1 android.permission.ACCESS_NETWORK_STATE Allows applications to access information about networks 1 android.permission.ACCESS_SURFACE_FLINGER Allows an application to use SurfaceFlinger's low level features 1 android.permission.ACCESS_WIFI_STATE Allows applications to access information about Wi-Fi networks 1 android.permission.ACCOUNT_MANAGER Allows applications to call into AccountAuthenticators. Only the system can get this permission. 5 android.permission.AUTHENTICATE_ACCOUNTS...
Created by freyo on August 01, 2011 16:06:40
Last update: August 03, 2011 08:32:01
To list all installed packages:
# pm list packages
To list all disabled packages:
# pm list packages -d
pm help:
# pm
usage: pm [list|path|install|uninstall]
...
Created by Dr. Xi on July 27, 2011 08:55:34
Last update: July 27, 2011 08:55:34
It is OK to remove elements from a list with Iterator , but you get UnsupportedOperationException if the list is created with Arrays.asList :
import java.util.*;
public class IteratorRe...
Prints:
ArrayList test:
================
List size: ...
Created by Dr. Xi on June 22, 2011 09:42:35
Last update: June 22, 2011 11:39:40
Demo code for CSV parsing with Skife CSV . Java code:
import java.io.*; import java.util.*; import... 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... Result: Line 1 has 4 values: |psmith01 abc| | CLAS... The parser worked correctly. But notice that it counts the spaces outside of the quotes significant, and doing so consistently. One more test for spaces: "Smith, Jack" , "210-345-8888" "Smith, Jack"... Result: Line 1 has 2 values: | Smith, Jack | | 210... Add a new line in item two: "One", "Two ", "Three" Result: Line 1 has 2 values: |One| | Two| L...
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 Dr. Xi on June 22, 2011 07:12:02
Last update: June 22, 2011 11:32:02
Demo code for CSV parsing with OstermillerUtils .
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 6 values:
|psmith01 abc|
| "CLA...
Putting a space before the first quote:
"Smith, Jack","210-345-8888"
It dismissed the quotes:
Line 1 has 3 values:
| "Smith|
| Jack"|
...
Add a new line in item two:
"One", "Two
", "Three"
Result:
Line 1 has 2 values:
|One|
| "Two|
...
Created by Dr. Xi on June 13, 2011 15:05:27
Last update: June 13, 2011 15:10:24
When you pass parameters from shell to Java, the list arguments may be messed up if there are spaces in the values.
Start with a simple Java test class:
public class EchoParams {
public static voi...
Tests:
$ java EchoParams a b c
Arg: a
Arg: b
Arg...
Now wrap the command in a shell script ( echoparams.sh ):
#!/bin/sh
java EchoParams $*
Tests:
$ ./echoparams.sh a b c
Arg: a
Arg: b
Arg...
The quotes had no effect on the parameters list.
Changing $* to $@ produces the same results.
The correct way to quote the args list is: "$@"
#!/bin/sh
java EchoParams "$@"
Test:
$ ./echoparams.sh a b "c d" "1 2 3 4 5"
Arg: a
...
Created by Dr. Xi on October 16, 2008 20:45:40
Last update: March 28, 2011 20:23:22
Java's built-in classes are way too complex/flexible for a simple protocol like HTTP. This is a wrapper to simplify HTTP GET and POST.
import java.io.*;
import java.net.*;
imp...
A simple test:
import java.io.*;
import java.util.*;
...
Created by Dr. Xi on June 19, 2010 04:34:01
Last update: June 19, 2010 04:39:13
Java SE 6 contains built-in utilities to generate XML signatures. This is an example that generates XML signatures using a Java keystore. It has options to generate signature for the whole document, for an element with a specific ID, or for elements matched by an XPATH expression.
The XML document used to test is taken from Getting Started with XML Security :
<?xml version="1.0"?>
<PatientRecord>
...
This is the Java code:
import java.io.FileInputStream;
import java.io....
However, it looks like the XPATH transform is not working. The digest generated with XPATH filter is exactly the same as that without it (i.e., the whole document)!
Another reference:
Programming With the Java XML Digital Signature API
Created by Dr. Xi on September 04, 2008 19:14:06
Last update: September 04, 2008 19:14:22
import java.sql.*;
import java.io.*;
pub...
