Questions by rahuljain1

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1 answer

Which one is better constructor injection or setter dependency injection?

asked Jan 27, 2020 in JAVA

+1 vote

1 answer

What is an abstract class? How is it different from an interface?

asked Jan 27, 2020 in JAVA

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1 answer

What is Adapter pattern in Java

asked Jan 27, 2020 in JAVA

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1 answer

What is Law of Demeter violation? Why it matters?

asked Jan 27, 2020 in JAVA

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1 answer

Can you explain Liskov Substitution principle?

asked Jan 27, 2020 in JAVA

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1 answer

Which design pattern have you used in your production code? apart from Singleton?

asked Jan 27, 2020 in JAVA

+1 vote

2 answers

Explain difference between abstract class and interface in Java?

asked Jan 27, 2020 in JAVA

0 votes

1 answer

What is the interface? Why you use it if you cannot write anything concrete on it?

asked Jan 27, 2020 in JAVA

+1 vote

1 answer

How do you format a date in Java?

asked Jan 27, 2020 in JAVA

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1 answer

Does SimpleDateFormat is safe to use in the multi-threaded program?

asked Jan 27, 2020 in JAVA

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1 answer

Name couple of method overloading best practices in Java?

asked Jan 27, 2020 in JAVA

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1 answer

Name 5 JDBC best practices your follow?

asked Jan 27, 2020 in JAVA

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1 answer

Name 5 IO best practices?

asked Jan 27, 2020 in JAVA

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Can you tell us at least 5 best practice you use while using threads in Java?

asked Jan 27, 2020 in JAVA

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1 answer

Tell me few best practices you apply while using Collections in Java?

asked Jan 27, 2020 in JAVA

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1 answer

What best practices you follow while writing multi-threaded code in Java?

asked Jan 27, 2020 in JAVA

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1 answer

Why you need to override hashcode, when you override equals in Java?

asked Jan 27, 2020 in JAVA

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1 answer

What is the difference between Comparator and Comparable in Java?

asked Jan 27, 2020 in JAVA

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1 answer

Can we use random numbers in the hashcode() method?

asked Jan 27, 2020 in JAVA

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1 answer

Can two equal object have the different hash code?

asked Jan 27, 2020 in JAVA

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1 answer

Is it possible for two unequal objects to have the same hashcode?

asked Jan 27, 2020 in JAVA

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1 answer

What is default size of ArrayList and HashMap in Java?

asked Jan 27, 2020 in JAVA

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1 answer

Can I write my own container class and use it in the for-each loop?

asked Jan 27, 2020 in JAVA

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1 answer

Write code to remove elements from ArrayList while iterating?

asked Jan 27, 2020 in JAVA

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1 answer

How HashSet works internally in Java?

asked Jan 27, 2020 in JAVA

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2 answers

What is the difference between Hashtable and HashMap?

asked Jan 27, 2020 in JAVA

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1 answer

Which kind of tree is used to implement TreeMap in Java?

asked Jan 27, 2020 in JAVA

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1 answer

LinkedList in Java is doubly or singly linked list?

asked Jan 27, 2020 in JAVA

+1 vote

1 answer

How do you print Array in Java?

asked Jan 27, 2020 in JAVA

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1 answer

What is a couple of ways that you could sort a collection?

asked Jan 27, 2020 in JAVA

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