java 13 interview questions and answers

A protected method may only be accessed by classes or interfaces of the same package or by subclasses of the class in which it is declared. In Java, if a method is declared as protected, it can be accessed in the following places: Within the same package: Any class within the same package as the class containing … Read more

Component. In Core Java, the immediate superclass of the Container class is the Component class. The class hierarchy is as follows: lua java.lang.Object | +– java.awt.Component | +– java.awt.Container So, Container extends Component, making Component the immediate superclass of Container.

The finally clause of the try-catch-finally statement is always executed unless the thread of execution terminates or an exception occurs within the execution of the finally clause. The finally clause of a try-catch-finally statement in Java is executed no matter what, whether an exception is thrown or not. It ensures that the code within the … Read more

The compiler supplies a default constructor for a class if no other constructors are provided. In Java, a default constructor is provided by the compiler under certain circumstances. The compiler automatically supplies a default constructor for a class under the following conditions: No Constructors Defined: If you haven’t defined any constructor for your class, the … Read more

The operating system’s task scheduler allocates execution time to multiple tasks. By quickly switching between executing tasks, it creates the impression that tasks execute sequentially. In a computer with a single CPU, multithreading is achieved through time-sharing or time-slicing. The operating system allocates time slices to each thread, allowing them to execute in a seemingly … Read more