Request: Need Answers For Some Java Interview Questions Asap

[NeedToAnalyzeBeforeRealize]

Friendzzz.... I hope that you all are doing well.... I need your help... The below questions are logical questions. I need answers for the below Java Interview questions(3)....Plzzz Help me... Reply me ASAP... Your answers will help me a lot...
[b]Question 1 :[/b]
There is a legacy application which does the job of parsing and importing log file contents to a DB. All activities of the application are logged. The application processes millions of files per day and has multiple threads working simultaneously.
One particular day, you find that the application is no longer parsing and importing files to the DB. How do you approach to find the root cause of the problem?



[b]Question 2:[/b]
Write a simple GWT application which sets/unsets label text when a button is clicked repititively. (Only the Java class is sufficient)



[b]Question 3:[/b]
You have been entrusted with the task of creating a parking lot application.
These are the conditions:[list=a]
[*]There are slots by vehicle types like car, truck, bike etc
[*]The slot has a different amount based on the vehicle type.
[/list]
The application has to:[list=a]
[*]Keep track of empty slots by type
[*]Keep track of time each slot has been occupied.
[*]It has to be notified when a slot is empty
[/list]

Design n parking lot application in an Object oriented way.
Use class diagrams to depict object hierarchy.
Use sequence diagrams to explain flows. (In addition, a brief point based explanation of flow would be great)

[superhit]

good one

[nikhilboorla]

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