java 13 interview questions and answers

When an exception is thrown within the body of a try statement, the catch clauses of the try statement are examined in the order in which they appear. The first catch clause that is capable of handling the exception is executed. The remaining catch clauses are ignored. In Java, when an exception is thrown within a try block, the Java runtime system looks … Read more

The Object class is the highest-level class in the Java class hierarchy. The Class class is used to represent the classes and interfaces that are loaded by a Java program. In Core Java, the Object and Class classes serve distinct purposes. Object Class: The Object class is at the top of the Java class hierarchy. Every class in Java … Read more

A top-level class may be public, abstract, or final. In Java, a top-level class can have the following modifiers: public: The class is accessible to any other class. (no modifier): If no modifier is specified, the class is only accessible within the same package. This is sometimes referred to as having package-private access. It’s important to note that … Read more

A Java package is a naming context for classes and interfaces. A package is used to create a separate name space for groups of classes and interfaces. Packages are also used to organize related classes and interfaces into a single API unit and to control accessibility to these classes and interfaces. In Java, a package … Read more

A statement block is used to organize a sequence of statements as a single statement group. In Core Java, a statement block, also known as a code block or compound statement, is a group of zero or more statements enclosed in curly braces {}. The purpose of a statement block is to group multiple statements … Read more