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How can you check if a String is a number by using regular expression?
OpenVaishnavi Talawar asked 3 years ago • Java
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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 3 years ago • Java
178 views0 answers0 votes
Why do we use static initializers in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
165 views0 answers0 votes
Do you think Java Enums are more powerful than integer constants?
OpenVaishnavi Talawar asked 3 years ago • Java
283 views0 answers0 votes
What is the use of method references in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
216 views0 answers0 votes
What are the situations in which you choose HashSet or TreeSet?
OpenVaishnavi Talawar asked 3 years ago • Java
254 views0 answers0 votes
What are the different types of Classloaders in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
277 views0 answers0 votes
How do you decide which type of Inner Class – Static or Non-Static to use in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
214 views0 answers0 votes
Can you catch an exception thrown by another thread in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
245 views0 answers0 votes
What is the difference between poll() and remove() methods of Queue in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
407 views0 answers0 votes
Why do you use volatile keyword in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
236 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 3 years ago • Java
258 views0 answers0 votes
Explain the difference between fail-fast and fail-safe iterators?
OpenVaishnavi Talawar asked 3 years ago • Java
256 views0 answers0 votes
What is a compile time constant in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
221 views0 answers0 votes
What is the relation between x.hashCode() method and x.equals(y) method of Object class?
OpenVaishnavi Talawar asked 3 years ago • Java
215 views0 answers0 votes
How can you guarantee that the garbage collection takes place?
OpenVaishnavi Talawar asked 3 years ago • Java
207 views0 answers0 votes
what-is-the-difference-between-x-y-and-x-equalsy-expressions-in-java
OpenVaishnavi Talawar asked 3 years ago • Java
205 views0 answers0 votes
How can we find the memory usage of JVM from Java code?
OpenVaishnavi Talawar asked 3 years ago • Java
263 views0 answers0 votes
How can you do constructor chaining in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
308 views0 answers0 votes
When creating an abstract class, is it a good idea to call abstract methods inside its constructor?
OpenVaishnavi Talawar asked 3 years ago • C#_language
261 views0 answers0 votes
Can we use multiple main methods in same class?
OpenVaishnavi Talawar asked 3 years ago • Java
256 views0 answers0 votes
Can we use String in the switch case statement in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
181 views0 answers0 votes
Out of an int and Integer, which one takes more memory?
OpenVaishnavi Talawar asked 3 years ago • Java
190 views0 answers0 votes
What will this return 5*0.1 == 0.5? true or false?
OpenVaishnavi Talawar asked 3 years ago • Java
349 views0 answers0 votes
In Java, can we store a double value in a long variable without explicit casting?
OpenVaishnavi Talawar asked 3 years ago • Java
261 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 3 years ago • Java
348 views0 answers0 votes
How will you take thread dump in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
381 views0 answers0 votes
Which class contains clone method? Cloneable or Object class?
OpenVaishnavi Talawar asked 3 years ago • Java
233 views0 answers0 votes
What is the difference between StringBuffer and StringBuilder?
OpenVaishnavi Talawar asked 3 years ago • Java
225 views0 answers0 votes
What is difference between CyclicBarrier and CountDownLatch class?
OpenVaishnavi Talawar asked 3 years ago • Java
290 views0 answers0 votes
How can you convert an Array of bytes to String?
OpenVaishnavi Talawar asked 3 years ago • Java
220 views0 answers0 votes
Can you create an Immutable object that contains a mutable object?
OpenVaishnavi Talawar asked 3 years ago • Java
363 views0 answers0 votes
What is the difference between sleep() and wait() methods in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
309 views0 answers0 votes
What is a thread local variable in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
200 views0 answers0 votes
How can you mark an array volatile in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
391 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 3 years ago • Java
199 views0 answers0 votes
How can you access a non-static variable from the static context?
OpenVaishnavi Talawar asked 3 years ago • Java
191 views0 answers0 votes
Is ++ operation thread-safe in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
200 views0 answers0 votes
How can you do multiple inheritances in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
239 views0 answers0 votes
What is the right data type to represent Money (like Dollar/Pound) in Java?
OpenVaishnavi Talawar asked 3 years ago • Java
244 views0 answers0 votes
How can you determine if JVM is 32-bit or 64-bit from Java Program?
OpenVaishnavi Talawar asked 3 years ago • Java
300 views0 answers0 votes
How can you make sure that N threads can access N resources without deadlock?
OpenVaishnavi Talawar asked 3 years ago • Java
230 views0 answers0 votes
What happens when you put a key object in a HashMap that is already present?
OpenVaishnavi Talawar asked 3 years ago • Java
223 views0 answers0 votes
Does Java allow you to override a private or static method?
OpenVaishnavi Talawar asked 3 years ago • Java
340 views0 answers0 votes
Can we use multiple main methods in multiple classes?
OpenVaishnavi Talawar asked 3 years ago • Java
385 views0 answers0 votes
What does the expression 1.0 / 0.0 return? Will there be any compilation error?
OpenVaishnavi Talawar asked 3 years ago • Java
321 views0 answers0 votes
Is there any difference between a = a + b and a += b expressions?
OpenVaishnavi Talawar asked 3 years ago • Java
230 views0 answers0 votes
What are the main differences between an interface with default method and an abstract class in Java 8? Java Tricky Questions
OpenVaishnavi Talawar asked 3 years ago • Java
183 views0 answers0 votes
What is the target type of a lambda expression?
OpenVaishnavi Talawar asked 3 years ago • Java
331 views0 answers0 votes
What is the type of a Lambda expression in Java 8?
OpenVaishnavi Talawar asked 3 years ago • Java
390 views0 answers0 votes
What is a StringJoiner in Java 8?
OpenVaishnavi Talawar asked 3 years ago • Java
244 views0 answers0 votes
what-are-the-popular-annotations-introduced-in-java-8
OpenVaishnavi Talawar asked 3 years ago • Java
215 views0 answers0 votes
What are the new JVM arguments introduced by Java 8?
OpenVaishnavi Talawar asked 3 years ago • Java
213 views0 answers0 votes
How can we analyze the dependencies in Java classes and packages?
OpenVaishnavi Talawar asked 3 years ago • Java
254 views0 answers0 votes
It is possible to define a static method in an Interface?
OpenVaishnavi Talawar asked 3 years ago • Java
227 views0 answers0 votes
How can we get current time by using Date/Time API of Java 8?
OpenVaishnavi Talawar asked 3 years ago • Java
170 views0 answers0 votes
Which method in Optional provides the fallback mechanism in case of null value?
OpenVaishnavi Talawar asked 3 years ago • Java
250 views0 answers0 votes
What are the uses of Optional?
OpenVaishnavi Talawar asked 3 years ago • Java
248 views0 answers0 votes
What is Optional in Java 8?
OpenVaishnavi Talawar asked 3 years ago • Java
230 views0 answers0 votes
How can you get the name of Parameter in Java by using reflection?
OpenVaishnavi Talawar asked 3 years ago • Java
188 views0 answers0 votes
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