Technology Questions

Pass By Reference means the passing the address itself rather than passing the value. Passby Value means passing a copy of the value to be passed.

- To host a website a platform needs to be decided using which the hosting can be made simpler. 

- The specification needs to be determined before hosting the website and choosing the hosting platform. 

- The choice of operating system needs to be clear in choosing the website hosting services and the resources that the particular hosting platform requires need to be known. 

- The web hosting platform requires lots of services that need to be decided before hosting the website on the web.

- The space and the cost need to be kept minimum and according to that the choice has to be made between hosted or shared platforms.

Use Interfaces when…

- You see that something in your design will change frequently.

- If various implementations only share method signatures then it is better to use Interfaces.

- You need some classes to use some methods which you don't want to be included in the class, then you go for the interface, which makes it easy to just implement and make use of the methods defined in the interface.

Use Abstract Class when…

- If various implementations are of the same kind and use common behavior or status then abstract class is better to use.

- When you want to provide a generalized form of abstraction and leave the implementation task with the inheriting subclass.

- Abstract classes are an excellent way to create planned inheritance hierarchies. They're also a good choice for nonleaf classes in class hierarchies.

Path and Classpath are operating system level environment variales. Path is used define where the system can find the executables(.exe) files and classpath is used to specify the location .class files.

Adb is short for Android Debug Bridge. It allows developers the power to execute remote shell commands. Its basic function is to allow and control communication towards and from the emulator port.

Group of tables physically stored together because they share common columns and are often used together is called Cluster.

An app will be in InActive state if it is running in the foreground but is currently not receiving events. An app stays in InActive state only briefly as it transitions to a different state.

Wrapped classes are classes that allow primitive types to be accessed as objects.