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Created by Dr. Xi on August 15, 2012 12:05:39 Last update: August 15, 2012 12:05:39
Use OpenSSL's s_client command to fetch a page manually:
$ openssl s_client -connect localhost:443 -state -...Sample session for Google:
$ openssl s_client -connect www.google.com:443 -st...Resource: SSL/TLS Strong Encryption: FAQ
Created by freyo on May 17, 2011 11:13:17 Last update: May 17, 2011 11:13:17
This is an odd-ball content provider in that it doesn't provide database records, but provides a resource as a stream. It can be used to provide media files or XML resources. Start the project with:
tools/android create project --package com.android...Create assets directory and add an XML file ( assets/demo.xml ):
<? xml version="1.0" encoding="UTF-8"?> <people...Edit the layout ( res/layout/main.xml ):
<?xml version="1.0" encoding="utf-8"?> <LinearL...Edit src/com/android/cptest/Dummy.java :
package com.android.cptest; import java.io....Add content provider ( src/com/android/cptest/XmlResource.java ):
package com.android.cptest; import java.io....Update AndroidManifest.xml :
<?xml version="1.0" encoding="utf-8"?> <manifes...Add this section to the end of build.xml :
<target name="-package-resources"> <ech...Build and install:
ant installScreenshot: Remove the Dummy activity ( AndroidManifest.xml ):
<?xml version="1.0" encoding="utf-8"?> <manifes...Create a new project for...
Created by Dr. Xi on March 02, 2011 11:39:18 Last update: March 09, 2011 12:19:30
Some peculiarities about Java PrintWriter: PrintWriter never throws any exceptions. From JavaDoc : Methods in this class never throw I/O exceptions, although some of its constructors may. The client may inquire as to whether any errors have occurred by invoking checkError(). When error occurs, you'll never know anything more than that it occured, because checkError returns boolean. When a character is out of the range of the character encoding of the PrintWriter, it prints a question mark (?). But this is not an error. Test code:
import java.io.*; public class TestPrintWri...Latin1 test result:
java TestPrintWriter iso-8859-1 | od -bc 000000...UTF-8 test result:
java TestPrintWriter utf-8 | od -bc 0000000 141...Also, the constructor throws a FileNotFoundException when you try to write to a...
Created by voodoo on July 11, 2009 15:14:55 Last update: July 29, 2010 22:45:48
cURL is a command line tool for transferring files with URL syntax. The main purpose and use for cURL is to automate unattended file transfers or sequences of operations. It's really easy to see HTTP headers with curl:
C:\>curl --head http://www.google.com HTTP/1.0 ...or, headers and page together (dump headers to stdout):
$ curl --dump-header - http://www.google.com HTTP/...Download openssl from openssl.org:
C:\>curl --help Usage: curl [options...] <url> ...
Created by Dr. Xi on February 09, 2009 23:14:15 Last update: February 09, 2009 23:14:15
This example demonstrates the general steps in creating a custom Java class loader. Normally a class loader would consult its parent class loader when asked to load a class. If it's not loaded by the parent class loader, then the class loader would try to load the class on its own. This class loader tries to load the requested class on its own first, and delegates to the parent only when a java.lang.SecurityException is thrown (which happens when it tries to load core Java classes such as java.lang.String ). The classes are loaded from CLASSPATH through the getResourceAsStream call. It's important to note that when a class is loaded with a certain class loader, all classes referenced from that class are also loaded through the...