In Java architecture, what component translates platform-independent Bytecode into native machine instructions during program execution?
Option B is correct. The Java Virtual Machine (JVM) executes Java bytecode by compiling/interpreting it into machine-specific native instructions.
What is the size of the primitive data type 'char' in Java?
Option A is correct. Java uses 16-bit Unicode (UTF-16) for its char data type to support international characters.
Which keyword is used in Java to inherit a class and implement an interface, respectively?
Option A is correct. In Java, a class uses 'extends' to inherit from a superclass and 'implements' to adhere to an interface contract.
What is the ultimate root superclass of all classes in the Java class hierarchy?
Option B is correct. java.lang.Object is the top-level root class of all Java class hierarchies.
What effect does applying the 'final' keyword have on a variable, method, and class in Java?
Option C is correct. In Java, final variables are immutable constants, final methods prevent overriding, and final classes block inheritance.