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    Category: Core java

    Compare JDK vs JVM VS JRE.?

    Core Java

    Why is Java so Popular?

    Core Java

    What are the important differences between C++ and Java

    Core Java

    What is the role for a ClassLoader in Java?

    Core Java

    What are wrapper classes?

    Core Java

    Reasons why we need Wrapper Classes

    Core Java

    What are the different ways of creating Wrapper Class Instances

    Core Java

    Who will provide default constructor? and when?

    Core Java

    What is difference between equals() and == operator

    Core Java

    What is Auto Boxing?

    Core Java

    What is Casting?

    Core Java

    Are all Strings immutable?

    Core Java

    Where are string values stored in memory ?

    Core Java

    Why should you be careful about String Concatenation(+) operator in Loops?

    Core Java

    What are differences between String and StringBuffer and StringBuilder?

    Core Java

    Can you give examples of different utility methods in String class?

    Core Java

    What is Class & Object

    Core Java

    What is the super class of every class in Java

    Core Java

    Explain about toString method ?

    Core Java

    What is the use of equals method in Java?

    Core Java

    What are the important things to consider when implementing equals method?

    Core Java

    What is the hashCode method used for in Java?

    Core Java

    Explain inheritance with Examples.

    Core Java

    What is Method Overloading?

    Core Java

    Can super class reference variable can hold an object of sub class?

    Core Java

    Is Multiple Inheritance allowed in Java?

    Core Java

    Checked and UnChecked Exception

    Core Java

    Postmortem of public static void main(String[] args)

    Core Java

    what is the properties of default method?

    Core Java

    Difference Between Overloading and Overriding

    Core Java

    JVM

    Core Java

    Final ,Finally and Finalize

    Core Java

    Difference between Comparable and Comparator

    Core Java

    Java Inner Classes

    Core Java

    Explain System.out.println

    Core Java

    What is Difference between Interface and Abstract Class

    Core Java

    Understanding Java Access Modifiers

    Core Java

    Difference between object creation and assignment of Parent Class and Child Class

    Core Java

    Simple Generic Example

    Core Java

    Differences between List.of and Arrays.asList

    Core Java

    Volatile Keyword in Java

    Core Java

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