What does it mean to be in the same Java package?
Java packages are a mechanism for grouping Java classes that are related to each other, into the same “group” (package). All Java class and source files for classes belonging to the same package are located in the same directory. Java packages can contain subpackages.
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How do you access the class interfaces of a package?
If you use the package. * then all classes and interfaces of this package will be accessible but not subpackages. The import keyword is used to make the classes and interface of another package accessible to the current package.
Can two packages have the same name in Java?
Yes, you can have two classes with the same name in multiple packages. However, you cannot import both classes in the same file using two import statements. You’ll have to fully qualify one of the class names if you really need to reference both.
Can you have multiple classes in one java file?
Yes, you can have more than one class inside a . java file. Having many classes inside one file means that those classes are in the same package. So any other class that is inside that package but not in that file can also use those classes.
How to create Java classes in the same package?
So, for example, there is a package named “example” and two different classes: A.java and B.java. And I want to access class “A” from class “B” without imports. Like this: package example; public class A {some stuff here…} This code may not work, but it doesn’t matter.
How to access Java package from another package?
You can understand this using an example where a Boss class is defined in the payroll package. if the Employee class is not in the payroll package? So the Boss class must use one of the following techniques to reference a class in a different package. The full name of the class can be used. For example −
Where do classes go on the classpath in Java?
Note that you must include the current working directory (indicated by ‘.’) in the CLASSPATH. Every class is part of some package. If no package is specified, the classes in the archive go into a special unnamed package (same unnamed package for all archives).
Can a class be part of more than one package?
If no package is specified, the classes in the archive go into a special unnamed package (same unnamed package for all archives). All classes/interfaces in a file are part of the same package. Multiple files can specify the same package name.