⟩ Name the mechanism defined by java for the Resources to be used by only one Thread at a time?
Synchronisation
Synchronisation
When using servlets to build the HTML, you build a DOCTYPE line, why do you do that?
Tell us what are checked and unchecked exceptions? When do you use them?
Explain me when do you need to override the equals and hashCode methods in Java?
Tell us how can you swap the values of two numeric variables without using any other variables?
Tell us what do you mean by aggregation?
Tell me can an enum be extended?
Do you know what is the advantage of generic collection?
Explain me why doesn’t the following code generate a NullPointerException even when the instance is null?
Explain me what is a good usecase of calling System.gc()?
Do you know how threadsafe is enum in Java?