Java Package getPackage() Method

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Description

The Java Package getPackage(String name) finds a package by name in the callers ClassLoader instance. The callers ClassLoader instance is used to find the package instance corresponding to the named class. If the callers ClassLoader instance is null then the set of packages loaded by the system ClassLoader instance is searched to find the named package. Packages have attributes for versions and specifications only if the class loader created the package instance with the appropriate attributes. Typically, those attributes are defined in the manifests that accompany the classes.

Declaration

Following is the declaration for java.lang.Package.getPackage() method

public static Package getPackage(String name)

Parameters

name − a package name, for example, java.lang.

Return Value

This method returns the package of the requested name. It may be null if no package information is available from the archive or codebase.

Exception

NA

Getting Package of java.lang Package Example

The following example shows the usage of java.lang.Package.getPackage() method. In this program, we've created a Package variable and assigned it java.lang package object using getPackage() method. Then using getName() method, name of the package is printed.

package com.tutorialspoint;

public class PackageDemo {

   public static void main(String[] args) {

      // get the java package
      Package pack = Package.getPackage("java.lang");

      // print the package name
      System.out.println(pack.getName());
   }
}

Output

Let us compile and run the above program, this will produce the following result −

java.lang

Getting Package of Custom Package Example

The following example shows the usage of java.lang.Package.getPackage() method. In this program, we've created a Package variable and assigned it com.tutorialspoint package object using getPackage() method. Then using getName() method, name of the package is printed.

package com.tutorialspoint;

public class PackageDemo {

   public static void main(String[] args) {

      // get the java package
      Package pack = Package.getPackage("com.tutorialspoint");

      // print the package name
      System.out.println(pack.getName());
   }
}

Output

Let us compile and run the above program, this will produce the following result −

com.tutorialspoint

Getting Package of java.util Package Example

The following example shows the usage of java.lang.Package.getPackage() method. In this program, we've created a Package variable and assigned it java.util package object using getPackage() method. Then using getName() method, name of the package is printed.

package com.tutorialspoint;

public class PackageDemo {

   public static void main(String[] args) {

      // get the java package
      Package pack = Package.getPackage("java.util");

      // print the package name
      System.out.println(pack.getName());
   }
}

Output

Let us compile and run the above program, this will produce the following result −

java.util