Time left 0:13:37Question 8Not yet answeredMarked out of 1.00Flag questionQuestion textConsider the following statements about Java packages:I. Packages don’t provide a mechanism to partition all class names into more manageable chunks.II. Packages provide a visibility control mechanism.III. One of the important properties of a package is that all classes defined inside a package is accessible by code outside that package.IV. The .class files for classes declared to be part of a package can be stored in multiple directories.
Question
Time left 0:13:37Question 8Not yet answeredMarked out of 1.00Flag questionQuestion textConsider the following statements about Java packages:I. Packages don’t provide a mechanism to partition all class names into more manageable chunks.II. Packages provide a visibility control mechanism.III. One of the important properties of a package is that all classes defined inside a package is accessible by code outside that package.IV. The .class files for classes declared to be part of a package can be stored in multiple directories.
Solution
The statements about Java packages are as follows:
I. This statement is incorrect. Packages in Java do provide a mechanism to partition all class names into more manageable chunks. They are used for grouping related classes and interfaces together into a single module, which makes the code more organized and easier to manage.
II. This statement is correct. Packages in Java do provide a visibility control mechanism. They can control the visibility of the classes, interfaces, and members (methods and variables). The visibility is controlled by using access modifiers (public, private, protected, and default).
III. This statement is incorrect. Not all classes defined inside a package are accessible by code outside that package. The accessibility of a class depends on its access modifier. If a class is declared with the public access modifier, it can be accessed from outside the package. If it is declared with no access modifier (default), it can only be accessed within the same package.
IV. This statement is correct. The .class files for classes declared to be part of a package can be stored in multiple directories. The Java compiler and Java runtime system use the package name as part of the .class file name to locate the classes.
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rrect answerWhich of the following is/are true about packages in Java?1) Every class is part of some package. 2) All classes in a file are part of the same package. 3) If no package is specified, the classes in the file go into a special unnamed package 4) If no package is specified, a new package is created with folder name of class and the class is put in this package.OptionsOnly 1, 2 and 3Only 4Only 1, 2 and 4Only 1 and 3
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