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• C++ “Diamond Problem” of Multiple Inheritance
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• Java
  • If You Put System.exit(0) on Try or Catch block, Will Finally Block Execute?
  • JVM platform dependent?
  • Method overriding vs overloading
  • Why have a private constructor
  • Difference between object and class
  • How copy constructors work
  • Final modifier
  • Finally block
  • Java: Will Finally run after return?
  • Java Protected Example
  • Java serializable class example
  • Multiple Inheritance
  • How to Create a Thread in Java
  • Interface vs. Abstract Class
  • Thread States in Java
  • Arithmetic Exception
  • Overridden Method
  • Dynamic Binding
  • Can constructors be synchronized in Java?
  • Does Java pass by reference or by value?
  • Difference between a primitive type and a class type?
  • Does Java have pointers?
  • Downcasting in Java
  • Java: Diamond Problem
  • Java: Can an interface extend another interface?
  • Java: Are objects of the same type as the interface implemented?
  • Java: Can an interface be instantiated?
  • Find First Nonrepeated Character
  • Java: What’s the difference between equals() and ==?
  • Find trailing zeros in factorial
  • Java Reflection Example
  • Bit Manipulation Interview Questions and Answers
  • XOR in Java
  • Java Inner Class Example
  • When to use inner classes in Java
  • Inner vs nested class
  • Java Anonymous Class Example
  • Anonymous Class Interface
  • Argument Defined Anonymous Inner Class
• C/C++
  • Introduction
  • Function Overloading
  • How to Read Complex C Declarations
  • C++ abstract keyword
  • Pure Virtual Function
  • Lvalues and Rvalues in C
  • Inline vs. Macro
  • Diamond Problem
  • How Vtables Work
  • Virtual Destructors
  • Friend Classes in C++
  • How do you call C functions from C++?
  • What is a memory leak in C++?
  • What is the difference between delete and delete[ ]?
  • What’s the difference between a class variable and an instance variable?
  • Can static function access non-static members of class?
  • Execution order of constructor and destructor in inheritance
  • Does C++ support multiple inheritance?
  • Can you change the “this” pointer?
  • Function Templates in C++ example
  • C++: The compiler and function templates
  • C++: Function template with more than one type parameter
  • C++: #include ” ” vs. #include <>
  • C++: Name Hiding
  • C++ Ellipsis Catch Handler
  • What happens if a thrown exception is not handled?
  • C++ namespace example
  • C++ const pointer examples
• Databases/SQL
  • SQL Interview Questions
  • UNION vs. UNION ALL
  • Inner vs. Outer joins
  • SQL Key Definition
  • Differences between Primary and Foreign Keys
  • Natural Key In Database
  • Secondary Key
  • Simple key in SQL
  • Superkey Example
  • What is Referential Integrity
  • Having vs. Where clause
  • How do database indexes work?
  • What is a self join?
  • Example of DISTINCT in SQL
  • Retrieve unique rows without DISTINCT
  • Practice Interview Question 1
  • Practice Interview Question 1 continued
  • Practice Interview Question 1 continued
  • Practice Interview Question 2
  • Advanced SQL Interview Questions and Answers
  • Advanced SQL Interview Questions and Answers Part 2
  • Practice Interview Question 2 continued
  • Data Mining vs. Data Warehousing
  • Ternary/Three-valued Logic in SQL
  • Find Maximum Value Without Using Aggregate
  • SQL Injection Example and Tutorial
  • SQL Injection Prevention
  • Blind SQL Injection Example
  • Parameterized Queries vs Prepared Statements
  • Prepared Statement Example
  • Difference between a full join and an inner join?
  • Difference between a left outer join and right outer join?
  • Difference between a left join and a left outer join?
  • SQL: Having vs Group By
  • SQL: Group By with multiple columns
  • SQL – Select Distinct and Order By
  • SQL – Order By default sort order
  • Derived table vs subquery
  • Correlated vs Uncorrelated Subquery
  • Find nth highest salary – SQL
  • Cardinality in SQL
  • Selectivity in SQL Databases
  • Cardinality versus Selectivity