Technology Questions

Q:

What is difference between methods and blocks?

Answer

Method contains name, parameters, return type and executable body. But block does not contains name, parameters, return type.It contains only executable body.


Methods are executed by method call statements. Blocks are executed automatically with class loading and with object creation.

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Subject: Java

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Q:

why protected modifier?

Answer

Outside the package if any other class other than JVM calls the finalize method our class then it is not allowed

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Subject: Java

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Q:

Why an app on iOS device behaves differently when running in foreground than in background?

Answer

An application behaves differently when running in foreground than in background because of the limitation of resources on iOS devices.

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Q:

Which function would you use to insert a record into a database?

Answer

The dba_insert() function adds a record to a database.

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Subject: PHP

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Q:

I do not want my class to be inherited by any other class. What should i do?

Answer You should declared your class as final. But you can't define your class as final, if it is an abstract class. A class declared as final can't be extended by any other class.
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Subject: Java

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Q:

How can record locking be achieved in those DB2 versions which do not support it?

Answer

It can be done by setting the record length’s size to more than half of the page’s size.

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Q:

Can a class be declared as protected?

Answer A class can't be declared as protected. only methods can be declared as protected.
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Subject: Java

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Q:

What is a BI dashboard?

Answer

Dashboards are real-time business intelligence interfaces. They allow a huge amount of data to be read in a single interface in order to analyse the success or failure of the business or project in question

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