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The USB Debugging and Developer Options are hidden in latest Android 4.2 Jelly Bean. If we want to use that options, manually activate it. Google has rolled out latest Jelly Bean OTA update for their nexus mobiles. After the updating process, the developer option is not there in settings. Here is the guide to enable USB debugging on Android 4.2 Jelly Bean running mobiles and tablets. Developer Options have many features for app developer to test an app on their device from PC via ADB. After enabling the debugging mode only, access the mobile from PC. ADB is used for users if they want to quickly access and run commands on their device from their PC or Laptop. In gingerbread it is placed in Settings >  Applications  >  Development  >  USB Debugging. And ICS it is placed in Settings  >  Developer Options  >  USB Debugging. But, after upgrading it to 4.2 it is missing. After a long time to search around, we found the way how to...

Classes are the building blocks of your java application. If these blocks are not strong, your building (i.e. application) is going to face the tough time in future. This essentially means that not so well-written can lead to very difficult situations when the application scope goes up or application faces certain design issues either in production or maintenance. On the other hand, set of well designed and written classes can speed up the coding process by leaps and bounds, while reducing the number of bugs in comparison. In this post, I will list down 5 most recommended design principles, you should keep in mind, while writing your classes. These design principles are called SOLID, in short. They also form the best practices to be followed for designing your application classes. Single Responsibility Principle Open Closed Principle Liskov’s Substitution Principle Interface Segregation Principle Dependency Inversion Principle Lets drill down all of them one by ...