The Java Developers Almanac 1.4

e66. Getting the Package of a Class

    Class cls = java.lang.String.class;
    Package pkg = cls.getPackage();
    String name = pkg.getName();              // java.lang
    
    // getPackage() returns null for a class in the unnamed package
    cls = MyClass.class;
    pkg = cls.getPackage();                   // null
    
    // getPackage() returns null for a primitive type or array
    pkg = int.class.getPackage();    // null
    pkg = int[].class.getPackage();  // null

Related Examples

e59. Getting a Class Object
e60. Getting the Name of a Class Object
e61. Determining If a Class Object Represents a Class or Interface
e62. Getting the Superclass of an Object
e63. Getting the Superclass of a Class Object
e64. Listing the Interfaces That a Class Implements
e65. Listing the Interfaces That an Interface Extends
e67. Determining from Where a Class Was Loaded
e68. Loading a Class That Is Not on the Classpath
e69. Dynamically Reloading a Modified Class

See also: Arrays    Assertions    Commands    Numbers    Objects    Strings    System Properties    Threads

© 2002 Addison-Wesley.