As part of Django setup, if you find that pip is not installed, you can try to use the ensurepip module to install pip. Execute the following command to setup pip > python -m ensurepip To upgrade pip, > python -m pip install --upgrade pip

First check the two steps mentioned below i) Task Manager > Performance and check if "Virtualization" is enabled. ii) Control panel > Turn Windows Features On/Off and check if HyperV is not enabled Then run the following commands >> dism.exe /Online /Disable-Feature:Microsoft-Hyper-V >> bcdedit /set hypervisorlaunchtype off You will need to restart the system for the changes to happen After restart, Open Android Studio > Configure > SDK Manager and now you should be able to setup HAXM in your windows system. To reset back to normal (incase if there are other issues in the system) >> dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All >> bcdedit /set hypervisorlaunchtype auto

Safe fix for Mac (Android studio 4.1+). After Mac gets updated, we need to create a symbolic link to Android Studio.

Just run in the Terminal this command

$ ln -s ~/Library/Application\ Support/Google/AndroidStudio4.1/plugins ~/Library/Application\ Support/AndroidStudio4.1

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Follow the below steps to set the preset value for responsive design testing on mobile devices i) Go to the address bar in firefox and type "about.config" ii) You will get a warning message stating "This might void your warranty ... Changing these advanced settings can be harmful to the stability .....". Click the button "I'll be careful, I promise!' iii) In the search bar, type "presets" and look through the filter values for "devtools.responsiveUI.presets". Double click on the preference name "devtools.responsiveUI.presets" and enter the values [{"key":"320x480","name":"iPhone 3g/3gs","width":320,"height":480},{"key":"360x640","name":"Nokia E7, n90","width":360,"height":640},{"key":"640x960","name":"iPhone4/4s","width":640,"height":960},{"key":"640x1136","name":"iPhone5/5c/5s","width":640,"height":1136},{"key":"768x1024","name":"ipad1/2","width":768,"height":1024},{"key":"800x480","name":"Android-WVGA","width":800,"height":480},{"key":"800x1280","name":"KindleFireHD8.9","width":800,"height":1280},{"key":"2048x1536","name":"Retina display","width":2048,"height":1536},{"key":"600x800","name":"KindleFire/Galaxy/Nexus","width":600,"height":800}] Once the values are entered, you can open a new instance of the browser and click ctrl + shift + m to open up the responsive web view

Quirktools - Screenfly Interesting site to test mobile web pages of various screen sizes (kindle fire, samsung galaxy tab, google nexus 7, apple ipad 1 - 3 mini, kindle fire HD,  motorola razr v3m, motorola razr v8, blackberry 8300, apple iphone 3 & 4, LG optimus S, Samsung galaxy S2, ASUS galaxy 7, apple iphone 5, samsung galaxy s3/s4) Also this tool offers landscape and portrait modes in addition to scroll & retina effect. Studiopress - Responsive testing Responsive test from responsivetest.net Another interesting tool available online to check web page responsiveness on mobile phones, tablets, laptops and desktops. The web tool has resolutions for testing categorized by devices Apple, Blackberry (Bold 9930, Q10, Torch 9810, Torch 9850, Z10), Samsung, HTC, LG Other tools Browser resizing - http://resizemybrowser.com/ Responsive pixel - http://responsivepx.com/ Demonstrating responsive design - http://www.jamus.co.uk/demos/rwd-demonstrations/ Refer Wikipedia for the display of devices by pixel density http://en.wikipedia.org/wiki/List_of_displays_by_pixel_density

When we began creating an application using Struts2 framework with Hibernate and MySQL, we ran into a problem which was related to MySQL timing out its connection after a span of 8 hours when left unused. It conceived a lot of time at our end but we were able to nail down the issue at the end. Steps that we had taken to correct the issue related to Hibernate MySql connection timeout problem are listed below - Download Hibernate C3P0 and copy .jar files - Set c3p0.properties - Make changes to hibernate.cfg.xml - Test MySQL connection timeout - Hibernate, MySQL connection timeout related error messages (more…)