entri-admin, Author at Entri Q&A Hub

The Object class is the root of the Java class hierarchy, inherited by all classes.

The final keyword, when applied to a method, prevents it from being overridden in a subclass.

An interface specifies a set of methods that a class must implement, enforcing a contract.

The correct syntax uses double quotes: File f = new File(‘path’); for a file path.

Array elements of type int are automatically initialized to 0 if not explicitly set.

The finalize() method is invoked by the garbage collector before an object is reclaimed.

Static members are shared across all instances of a class and can be accessed without instantiation.

IllegalArgumentException is thrown when a method receives an argument that it cannot handle.

The finally block executes cleanup code (e.g., closing resources) after try-catch, always.

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