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Core Java Q & A Videos
First Section
Give a brief introduction and explain classes in Java? (10:15)
Why variables are required in Java programming language? (6:35)
What are Constructors in Java? (13:58)
Explain instance variable its creation, assigning values with the help of example? (8:06)
What are Class level variables or Static variables? (6:56)
What are Functions in Java? (6:11)
Explain concept and implementation of inheritance in Java? (8:00)
What is Abstract class? Explain its concept & practical use in Java? (9:01)
Explain Interfaces in Java? (7:46)
What is the difference between Abstract class and Interface? (3:28)
What are Final classes? Explain it features and give scenarios where it will be used? (5:15)
What are virtual or Override Functions in Java? (4:51)
How Access Specifier in base class affects overridden function in derived class? (3:02)
What purposes does Java IO serve? (6:49)
What are Buffered Streams and how does it works? (12:26)
Explain various File Operations present in Java? (13:48)
How to copy a file in Java? (9:03)
Explain purpose and methods provided by PrinterWriter and LineNumberReader of Java IO classes? (10:16)
Explain purpose of PushbackInputStream and PushbackReader classes? And also show methods provided by them? (8:35)
How to perform Serialization & Deserialization of an object in Java? (9:14)
What are Final classes? Explain it features and give scenarios where it will be used?
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