What will happen if we import a package twice?

Nothing, if a module has already been imported, it’s not loaded again. You will simply get a reference to the module that has already been imported (it will come from sys. modules ).

Can I import more than one package in Java?

A class can have only one package declaration but it can have more than one package import statements.

Does importing a package imports the subpackages as well?

No you will have to import the subpackages explicitly. Importing com. MyTest. * will import classes in the package MyTest only.

What happens when you import a package in Java?

To import java package into a class, we need to use java import keyword which is used to access package and its classes into the java program. Use import to access built-in and user-defined packages into your java source file so that your class can refer to a class that is in another package by directly using its name.

Can I import same package or class twice?

Can I import same package/class twice? One can import the same package or same class multiple times. Neither compiler nor JVM complains about it. And the JVM will internally load the class only once no matter how many times you import the same class.

Can we import same class package twice?

Importing a class twice Yes, you can import a class twice in Java, it doesn’t create any issues but, irrespective of the number of times you import, JVM loads the class only once.

What standard Java package is automatically imported into every Java program?

java.lang package
Java compiler imports java. lang package internally by default.

Can I import same package class twice?

Does import package make available all classes interfaces and sub packages within it?

* imports all public classes/interfaces/annotations of the package only and nothing else. If you need classes from the child package too, you have to import them separately. If an import declaration contains a specific class, only that class will be imported.

Can I import the same package class twice?

Is it possible to load a class by two ClassLoader?

A class is loaded only once into the JVM. So when a class is loaded into JVM, you have an entry as (package, classname, classloader). Therefore the same class can be loaded twice by two different ClassLoader instances.