Java Tests

Preparation for Java tests, interviews and exams

Tuesday, November 15, 2022

"The file has an unsupported compression type" issue - solved.

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 "The file has an unsupported compression type" error message in Premiere Pro could be because you are trying to open .mkv file. A...
Sunday, January 3, 2021

CountDownLatch

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CountDownLatch is a Java Util type of synchronizer which allows one Thread to wait for one or more Threads before it starts processing. Coun...
Monday, March 23, 2020

Library vs Framework

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Short: IoC  The key difference between a library and a framework is "Inversion of Control". When you call a method from a libr...
Thursday, December 15, 2016

Is PriorityQueue sorted?

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PriorityQueue is not sorted. It is guaranteed that only the first element is "sorted" (PriorityQueue is specified only to return l...
Monday, November 21, 2016

++ operator on variable used multiple times in single line

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Write the output of this code:         long l = 10;         System.out.println( "l " + l++ + "; " + l ); Result: l ...
Friday, November 18, 2016

Database Partitioning

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https://en.wikipedia.org/wiki/Partition_(database)
Tuesday, May 10, 2016

Java: Variables in interfaces

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Concept of variables in interfaces is allowed in Java, but the concept is different. Variables defined in interfaces are always static and ...
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