Displaying keyword search results 1 - 10
Created by freyo on February 06, 2013 21:10:47 Last update: February 06, 2013 21:12:18
I have an old Samung phone to be used as a toy. After restoring back to factory image and power on, I was stuck at the activate service screen. Unfortunately, the four corner magic touch did not work. So I did quite a bit of digging and this is what worked on my Samsung Continuum: Press emergency call button, then at the dialer, press * # 8 3 7 8 6 6 3 3 , press the Home key From the home screen, tap phone icon, Dial * # 2 2 7 4 5 9 2 7 Enter SPC code: ______ displays tap in white box to show virtual keyboard, enter 6 digit code (default: 000000), tap OK Select “Hidden menu Enable”, tap OK From...
Created by Dr. Xi on May 02, 2011 15:59:37 Last update: February 25, 2012 09:16:37
This code snippet gets the default keystore used by the Java keytool and displays the list of aliases along with the key type (certificate or private key).
import java.io.File; import java.io.FileInputSt...The default keystore used by the above code is: $HOME/.keystore .
Created by freyo on May 20, 2011 09:25:20 Last update: May 23, 2011 12:11:42
The javax.xml.crypto and javax.xml.crypto.dsig packages are not available in Android (as of version 2.3). Therefore, standard Java API does not work. But you can use the Apache Santuario library to do that. Here are the steps: Download the xml security source distribution (curently version 1.4.4). Build with ant. Create your own library jar (only the apache classes, no javax):
jar -cf xmlsec-1.4.4.jar -C build/classes orgCopy xmlsec-1.4.4.jar to the libs directory of your Android project. Here's the Java code:
import java.io.*; import javax.xml.parsers.*; ...
Created by alfa on April 08, 2011 11:05:24 Last update: April 08, 2011 11:05:24
Key points: Use java.awt.Robot to capture a screen region as java.awt.image.BufferedImage . Use javax.imageio.ImageIO to write image out to a file.
import java.awt.AWTException; import java.awt.R...
Created by Dr. Xi on April 05, 2011 08:04:37 Last update: April 05, 2011 08:11:37
There's no difference between a Java HTTP client and a Java HTTPS client. Ignore JavaWorld Java Tip 96 , it's way too old. The following code gets an HTTP page as well as an HTTPS page.
import java.io.*; import java.net.*; pub...There's one catch . If you are using the code on a test server with a self-signed certificate, it fails. In that case, I would suggest that you download the certificate from the server and import it to your keystore as a trusted key. You may also need to add a subject alternative name to the certificate if the host name does not match the certificate. You may also choose to use a custom TrustManager and HostnameVerifier to ignore the certificate verification errors.
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 November 08, 2010 20:44:12 Last update: November 08, 2010 20:44:12
Key points: Java String.matches() matches the entire string, not a partial string. Use java.util.regex.Matcher.find() to match a partial String. For case insensitive match, use Pattern.compile with case insensitive flags:
// Case insensitive for ASCII Pattern p = P...Use (?i) or (?iu) (for unicode) to inline case-insensitive flag:
boolean b = "StringToMatchAgainst".matches("(?...Test code:
import java.util.regex.*; public class Test...
Created by Dr. Xi on October 26, 2010 16:07:40 Last update: October 26, 2010 16:07:40
This is a more generic version, which can be expanded to accommodate additional file signatures.
import java.io.*; import java.util.*; pu...
Created by Dr. Xi on July 19, 2010 21:58:34 Last update: July 23, 2010 21:37:23
Parsing XML in Java is really simple:
import java.io.*; import javax.xml.parsers.Docu...The parser implementation details are hidden behind the JAXP API. In case you want to know which parser implementation is used, this is what the JavaDoc for DocumentBuilderFactory.newInstance says: Use the javax.xml.parsers.DocumentBuilderFactory system property. Use the properties file " lib/jaxp.properties " in the JRE directory. This configuration file is in standard java.util.Properties format and contains the fully qualified name of the implementation class with the key being the system property defined above. The jaxp.properties file is read only once by the JAXP implementation and it's values are then cached for future use. If the file does not exist when the first attempt is made to read from it, no further attempts are made to...
Created by Dr. Xi on June 20, 2010 14:35:17 Last update: June 20, 2010 14:35:17
This XML signature validator comes from the Apache XML Security project. It validates the signature according to the core validation processing rules . It does not verify that the key used to generate the signature is a trusted key. You can override the KeySelector class to make sure that the signing key is from a trusted store.
import javax.xml.crypto.*; import javax.xml.cry...