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Easy Learn Java: Programming Articles, Examples and Tips - Page 100


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I try to call the Runtime.exec() command by passing it an array of strings.

Go to all tips in General Java

Question: I try to call the Runtime.exec() command by passing it an array of strings.

The problem is that I need to use "&" in my command. It runs perfectly on shell prompt but not by Runtime.exec(). Java cuts all everything away after that sign, so my command is incomplete.

Answer: No clear explanation to such behavior. Use workaround:
write your command into file (shell script) and then run this script. It will work Smile

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13 comments | Printer Friendly Page  Send to a Friend | Score: 5
Posted by jalex on Friday, October 24, 2003 (00:00:00) (4732 reads)

Can I use HttpURLConnection class to make HTTPS requests in java 1.2?

Go to all tips in JSP, Servlets

Question: Can I use HttpURLConnection class to make HTTPS requests in java 1.2?

Answer: No, you need to use JSSE which includes HTTPS support - the ability to access data such as HTML pages using HTTPS.
Since Java 1.4 it is the part of J2SE. Just take HttpsURLConnection class.

Just for your info - Installing JSSE.

The Java 2 Standard Edition SDK 1.4 and later includes JSSE, so if you use a recent SDK version, you can move on to the Generating a Self-Signed Certificate section. For SDK versions prior to 1.4, you must download JSEE separately from http://java.sun.com/products/jsse/. Follow the instructions on Sun's site.

The JSSE JAR files can be installed as a so-called installed extension by placing them in the $JAVA_HOME/lib/ext directory (see the JSSE documentation for details), but can also be installed in any directory you like.

If you do not install them as an installed extension, you must set the JSSE_HOME environment variable to the JSSE installation directory path. On a Windows platform, use the set command like this:

C:\> set JSSE_HOME=C:\jsse1.0.3_01

 



10 comments | Printer Friendly Page  Send to a Friend | Score: 0
Posted by jalex on Thursday, October 23, 2003 (00:00:00) (11437 reads)

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