java 16 interview questions and answers

The GregorianCalendar class provides support for traditional Western calendars. The GregorianCalendar class in Java is a concrete implementation of the abstract Calendar class and is part of the java.util package. It provides a standard implementation of the Gregorian calendar system, which is the calendar system used by most of the world. The Gregorian calendar is a solar … Read more

Box.Filler, Button, Canvas, Checkbox, Choice, Container, Label, List, Scrollbar, or TextComponent. In Java, the Component class is a part of the Abstract Window Toolkit (AWT) package, and it serves as the base class for all AWT components. Here are three subclasses of the Component class: Button: Button is a subclass of Component that represents a button that can trigger an action when pressed. Canvas: … Read more

If an expression involving the Boolean & operator is evaluated, both operands are evaluated. Then the &operator is applied to the operand. When an expression involving the && operator is evaluated, the first operand is evaluated. If the first operand returns a value of true then the second operand is evaluated. The && operator is then applied to the first and second … Read more

After a thread is started, via its start() method or that of the Thread class, the JVM invokes the thread’srun() method when the thread is initially executed. In Java, a thread’s run() method is invoked when the thread is started using the start() method. The start() method is part of the Thread class and is used to begin the execution … Read more

Object. In Core Java, the immediate superclass of the MenuComponent class is the Object class. The Object class is the root class of the Java class hierarchy, and all classes in Java are directly or indirectly derived from the Object class. Therefore, if a class does not explicitly extend another class, it implicitly inherits from … Read more