Recently when trying to run an Android project in Android studio, I noticed the following error on opening it:
Unsupported major.minor version 52.0
After doing some Google search I found that the problem was due to the code requiring Java 8 while my IDE used Java 7. So, to fix it one has to
– Go to File > Other Settings > Default Project Structure…
– If your JDK location is set to a Java 1.7 location, change it to the corresponding Java 1.8 location. In my case the required path was
– Click OK
That’s it. Now the error should go away.
Today I will discuss how to create a VirtualHost on Tomcat 8. For those who don’t know, Tomcat is a very popular open-source web server for hosting Java web applicationsm. Tomcat implements a bunch of Java EE specifications like Java Servlet, JavaServer Pages (JSP), Websocket and Java EL .
Let’s assume you installed Tomcat 8 in /usr/local/apache-tomcat-8.0.30. you want to add a virtual host sweetapp.com. Assume the project folder is at /usr/local/apache-tomcat-8.0.30/webapps/myapp
Open the file /usr/local/apache-tomcat-8.0.30/conf/server.xml
Then add the following lines:
<Host name="sweetapp.com" appBase="webapps" unpackWARs="true" autoDeploy="true">
<Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
pattern="%h %l %u %t "%r" %s %b" />
<Context path="" docBase="/usr/local/apache-tomcat-8.0.30/webapps/myapp"
Save and close the file.
Then restart tomcat using the commands:
Apache Tomcat – Wikipedia, the free encyclopedia. https://en.wikipedia.org/wiki/Apache_Tomcat