Java Packages MCQ Questions And Answers
Q. What is a Java package?
A. A collection of classes and interfacesB. A data structure
C. An executable file
D. A loop statement
Q. Which keyword is used to import a package in Java?
A. includeB. import
C. require
D. from
Q. Which of the following is true about Java packages?
A. Packages can be nestedB. Packages can be imported within other packages
C. Packages can contain only interfaces
D. Packages are not used in Java programming
Q. What is the access modifier for a class within a package that allows it to be accessed by any other class?
A. publicB. private
C. protected
D. default
Q. Which of the following is a predefined package in Java?
A. mypackageB. javapackage
C. util
D. program
Q. What is the benefit of using packages in Java?
A. Easier code organization and managementB. Faster code execution
C. Greater security
D. Better user interface
Q. How do you create a package in Java?
A. Using the "create package" keywordB. Adding a class to a folder with the package name
C. Using the "package" keyword at the beginning of a Java file
D. Using the "new" keyword
Q. Can two classes in the same package have the same name?
A. Yes, as long as they are in different foldersB. No, class names in the same package must be unique
C. Only if one class is public and the other is private
D. Only if one class is abstract and the other is concrete
Q. What is the purpose of the Predicate functional interface in Java 8?
A. To produce resultsB. To consume values
C. To filter elements based on a condition
D. To transform values
Q. Which keyword is used to access a class from a different package in Java?
A. importB. access
C. importclass
D. package
Q. Which of the following statements is true about Java Packages?
A.Packages can be nested with dots in their name.B.
Packages in Java are used to group related classes.C.
Packages are mainly used for organizing code and avoiding naming conflicts.D.
Packages can only contain interfaces and abstract classes.