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Q:

Tell me the importance of a flow chart?

Answer

The flow chart gives a clear graphical representation of an implemented process. This makes the system simple to understand for all persons involved in the project. 


 

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Subject: Business Analyst

Q:

When finally block is executed?

Answer

If exception is generated  in try and if that exception is not catch by any catch then finally is executed.


If exception is generated in try and if that exception is caught by one of catch statements then also finally is executed.


if no exception is generated then also finally is executed.

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Subject: Java

Q:

Why synchronization?

Answer

When ever two or more threads are sharing same data for updating then unpredicted result will be there in the data.


For Example take a thread is depositing amount in Account Object and another thread is withdrawing amount from the same Account Object.


when ever both threads are executed simultaneously then unexpected result is stored in the balance of the  Account Object. 

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Subject: Java

Q:

How to do MultiThreading in Java?

Answer

To do multi threading in java we use interfaces and classes defined in java.lang package.


Those classes and interfaces are:


Java.lang.Runnable, Java.lang. Thread, Java.lang.ThreadGroup

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Subject: Java

Q:

What is MultiThreading?

Answer

Executing two or more blocks (threads) of a program at a time is called MultiThreading.

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Subject: Java

Q:

What is MultiTasking?

Answer

Executing more than one program simultaniously.(i.e at time)


Ex:


Windows media player  is a program


Internet explorer(IE) is another program executing both the programs  at a time is called multi tasking.

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Subject: Java

Q:

What is Thread?

Answer

A Thread is a block of code that can be executed in parallel with another block of code.

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Subject: Java

Q:

How to get last modified date of a file?

Answer

long lastModified();


we can give this return value to a date object and we can get data to be displayed.

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Subject: Java