complete tutorials on core java in java

What is the difference between the Font and FontMetrics classes

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The FontMetrics class is used to define implementation-specific properties, such as ascent and descent, of aFont object. In Java, the Font class and the FontMetrics class are related but serve different purposes. Font Class: The Font class is part of the Java AWT (Abstract Window Toolkit) and is used for representing fonts. It defines a font face, size, … Read more

Is the ternary operator written x : y ? z or x ? y : z

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It is written x ? y : z. The correct syntax for the ternary operator in Java is: sql condition ? expression1 : expression2 So, in your case, the correct syntax is: yaml x ? y : z

Can an object be garbage collected while it is still reachable

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A reachable object cannot be garbage collected. Only unreachable objects may be garbage collected. No, an object cannot be garbage collected while it is still reachable. In Java, the garbage collector is responsible for reclaiming memory occupied by objects that are no longer reachable or referenced by any live part of the program. If an … Read more

Which class is extended by all other classes

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The Object class is extended by all other classes. In Java, the Object class is the root class for all other classes. Every class in Java is either directly or indirectly derived from the Object class. Therefore, the correct answer to the question “Which class is extended by all other classes?” is the Object class.

What is the difference between a Window and a Frame

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The Frame class extends Window to define a main application window that can have a menu bar. In the context of Core Java, specifically in the context of GUI (Graphical User Interface) programming using Swing, a Window and a Frame refer to different classes provided by the Java Foundation Classes (JFC) library. Frame: A Frame is a top-level container … Read more