Quick study sessions to strengthen memory and retain key concepts.
Explain compile-time access vs. runtime dispatch?
Compile-time checks reference type; runtime uses actual object type. At compile time, Java checks that methods are accessible…
View Card →Why is dynamic dispatch important in Java?
It enables polymorphism by allowing method overriding. Dynamic dispatch is crucial for implementing polymorphism in Java. It allows…
View Card →What determines which method body runs in Java?
The actual object's type determines the method. In Java, the method that gets executed is determined by the…
View Card →What is upcasting in Java?
Upcasting is treating a subclass object as a superclass object. Upcasting in Java involves converting a subclass reference…
View Card →How does catching general exceptions affect program reliability?
Catching general exceptions can hide specific issues and make debugging harder. Catching broad exceptions like 'Exception' or 'Throwable'…
View Card →How would you explain a common pitfall when using the 'throw' keyword in an interview?
A common pitfall is not providing enough context in the thrown exception. When using 'throw', ensure the exception…
View Card →What are the trade-offs of catching exceptions at different layers of an application?
Higher-level catches provide centralized handling, while lower-level catches offer specific recovery. Catching exceptions at higher layers, like the…
View Card →What happens if a checked exception is not declared or handled?
The compiler will produce an error if a checked exception is not declared or handled. In Java, checked…
View Card →Why is it important to read and understand exception flow in code?
Understanding exception flow helps identify where errors are handled. By tracing how exceptions propagate through the call stack,…
View Card →Why does a method signature that includes 'throws' matter in this design?
The 'throws' keyword in a method signature indicates potential exceptions the method might throw. Including 'throws' in a…
View Card →