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Between HashSet and TreeSet collections in Java, which one is better?
OpenVaishnavi Talawar asked 4 years ago • Java
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What are the benefits of using an unordered array over an ordered array?
OpenVaishnavi Talawar asked 4 years ago • Java
391 views0 answers0 votes
What is the difference between a process and a thread in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
191 views0 answers0 votes
Why Collection interface doesn’t extend Cloneable and Serializable interfaces?
OpenVaishnavi Talawar asked 4 years ago • Java
324 views0 answers0 votes
What are the different ways to sort a collection in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
286 views0 answers0 votes
What is the difference between pass by reference and pass by value?
OpenVaishnavi Talawar asked 4 years ago • Java
213 views0 answers0 votes
Between Enumeration and Iterator, which one has better performance in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
204 views0 answers0 votes
What is the difference between DOM and SAX parser in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
199 views0 answers0 votes
Between two types of dependency injections, constructor injection and setter dependency injection, which one is better?
OpenVaishnavi Talawar asked 4 years ago • Java
212 views0 answers0 votes
Is it ok to use random numbers in the implementation of hashcode() method in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
204 views0 answers0 votes
How can we print an Array in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
259 views0 answers0 votes
In Java, can two equal objects have the different hash code?
OpenVaishnavi Talawar asked 4 years ago • Java
202 views0 answers0 votes
What is the difference between the expressions String s = “Temporary” and String s = new String(“Temporary “)? Which one is better and more efficient?
OpenVaishnavi Talawar asked 4 years ago • Java
252 views0 answers0 votes
How can you check if a String is a number by using regular expression?
OpenVaishnavi Talawar asked 4 years ago • Java
184 views0 answers0 votes
Your client is complaining that your code is throwing NoClassDefFoundError or NoSuchMethodError, even though you are able to compile your code without error and method exists in your code. What could be the reason behind this?
OpenVaishnavi Talawar asked 4 years ago • Java
211 views0 answers0 votes
Why do we use static initializers in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
198 views0 answers0 votes
Do you think Java Enums are more powerful than integer constants?
OpenVaishnavi Talawar asked 4 years ago • Java
306 views0 answers0 votes
What is the use of method references in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
238 views0 answers0 votes
What are the situations in which you choose HashSet or TreeSet?
OpenVaishnavi Talawar asked 4 years ago • Java
278 views0 answers0 votes
What are the different types of Classloaders in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
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How do you decide which type of Inner Class – Static or Non-Static to use in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
239 views0 answers0 votes
Can you catch an exception thrown by another thread in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
275 views0 answers0 votes
What is the difference between poll() and remove() methods of Queue in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
438 views0 answers0 votes
Why do you use volatile keyword in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
256 views0 answers0 votes
You have a character array and a String. Which one is more secure to store sensitive data (like password, date of birth, etc.)?
OpenVaishnavi Talawar asked 4 years ago • Java
289 views0 answers0 votes
Explain the difference between fail-fast and fail-safe iterators?
OpenVaishnavi Talawar asked 4 years ago • Java
281 views0 answers0 votes
What is a compile time constant in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
254 views0 answers0 votes
What is the relation between x.hashCode() method and x.equals(y) method of Object class?
OpenVaishnavi Talawar asked 4 years ago • Java
243 views0 answers0 votes
How can you guarantee that the garbage collection takes place?
OpenVaishnavi Talawar asked 4 years ago • Java
232 views0 answers0 votes
what-is-the-difference-between-x-y-and-x-equalsy-expressions-in-java
OpenVaishnavi Talawar asked 4 years ago • Java
237 views0 answers0 votes
How can we find the memory usage of JVM from Java code?
OpenVaishnavi Talawar asked 4 years ago • Java
289 views0 answers0 votes
How can you do constructor chaining in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
330 views0 answers0 votes
When creating an abstract class, is it a good idea to call abstract methods inside its constructor?
OpenVaishnavi Talawar asked 4 years ago • C#_language
295 views0 answers0 votes
Can we use multiple main methods in same class?
OpenVaishnavi Talawar asked 4 years ago • Java
284 views0 answers0 votes
Can we use String in the switch case statement in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
203 views0 answers0 votes
Out of an int and Integer, which one takes more memory?
OpenVaishnavi Talawar asked 4 years ago • Java
215 views0 answers0 votes
What will this return 5*0.1 == 0.5? true or false?
OpenVaishnavi Talawar asked 4 years ago • Java
376 views0 answers0 votes
In Java, can we store a double value in a long variable without explicit casting?
OpenVaishnavi Talawar asked 4 years ago • Java
298 views0 answers0 votes
Can you cast an int variable into a byte variable? What happens if the value of int is larger than byte?
OpenVaishnavi Talawar asked 4 years ago • Java
375 views0 answers0 votes
How will you take thread dump in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
407 views0 answers0 votes
Which class contains clone method? Cloneable or Object class?
OpenVaishnavi Talawar asked 4 years ago • Java
271 views0 answers0 votes
What is the difference between StringBuffer and StringBuilder?
OpenVaishnavi Talawar asked 4 years ago • Java
248 views0 answers0 votes
What is difference between CyclicBarrier and CountDownLatch class?
OpenVaishnavi Talawar asked 4 years ago • Java
316 views0 answers0 votes
How can you convert an Array of bytes to String?
OpenVaishnavi Talawar asked 4 years ago • Java
242 views0 answers0 votes
Can you create an Immutable object that contains a mutable object?
OpenVaishnavi Talawar asked 4 years ago • Java
385 views0 answers0 votes
What is the difference between sleep() and wait() methods in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
335 views0 answers0 votes
What is a thread local variable in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
222 views0 answers0 votes
How can you mark an array volatile in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
414 views0 answers0 votes
Let say there is a method that throws NullPointerException in the superclass. Can we override it with a method that throws RuntimeException?
OpenVaishnavi Talawar asked 4 years ago • Java
226 views0 answers0 votes
How can you access a non-static variable from the static context?
OpenVaishnavi Talawar asked 4 years ago • Java
214 views0 answers0 votes
Is ++ operation thread-safe in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
219 views0 answers0 votes
How can you do multiple inheritances in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
268 views0 answers0 votes
What is the right data type to represent Money (like Dollar/Pound) in Java?
OpenVaishnavi Talawar asked 4 years ago • Java
273 views0 answers0 votes
How can you determine if JVM is 32-bit or 64-bit from Java Program?
OpenVaishnavi Talawar asked 4 years ago • Java
325 views0 answers0 votes
How can you make sure that N threads can access N resources without deadlock?
OpenVaishnavi Talawar asked 4 years ago • Java
255 views0 answers0 votes
What happens when you put a key object in a HashMap that is already present?
OpenVaishnavi Talawar asked 4 years ago • Java
252 views0 answers0 votes
Does Java allow you to override a private or static method?
OpenVaishnavi Talawar asked 4 years ago • Java
361 views0 answers0 votes
Can we use multiple main methods in multiple classes?
OpenVaishnavi Talawar asked 4 years ago • Java
407 views0 answers0 votes
What does the expression 1.0 / 0.0 return? Will there be any compilation error?
OpenVaishnavi Talawar asked 4 years ago • Java
346 views0 answers0 votes
Is there any difference between a = a + b and a += b expressions?
OpenVaishnavi Talawar asked 4 years ago • Java
264 views0 answers0 votes
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