Loader is used to load the class or interface. Locate, load, and link the class or interface. Given the fully qualified name for a class or interface (in the sameįormat returned by getName) this method attempts to Interface with the given string name, using the given class loader. Returns the Class object associated with the class or forName public static Class forName( String className).Information about modifiers and type parameters Since: 1.8 Returns: a string describing this Class, including Originating source code or illegal on the originating sourceĬode may be present. Of a type is being generated, modifiers not present on the Note that since information about the runtime representation Separate any modifiers from the kind of type. The string is formatted as a list of type modifiers, if any,įollowed by the kind of type (empty string for primitive typesĪnd class, enum, interface, interface, as appropriate), followedīy the type's name, followed by an angle-bracketedĬomma-separated list of the type's type parameters, if any.Ī space is used to separate modifiers from one another and to Information about modifiers and type parameters. Returns a string describing this Class, including ("The name of class Foo is: "+()) Since: JDK1.0 See Also: fineClass(byte, int, int), Type (or for void) using a class literal. It is also possible to get the Class object for a named The following example uses a Class object to print the Objects are constructed automatically by the Java Virtual Machine as classesĪre loaded and by calls to the defineClass method in the class The primitive Java types ( boolean,Ĭlass has no public constructor. That is shared by all arrays with the same element type and number Every array alsoīelongs to a class that is reflected as a Class object An enum is a kind ofĬlass and an annotation is a kind of interface. Interfaces in a running Java application. The following table shows where the members of the Alpha class are visible for each of the access modifiers that can be applied to them.Instances of the class Class represent classes and The following figure shows the four classes in this example and how they are related.Ĭlasses and Packages of the Example Used to Illustrate Access Levels Let's look at a collection of classes and see how access levels affect visibility. Second, when you write a class, you need to decide what access level every member variable and every method in your class should have. First, when you use classes that come from another source, such as the classes in the Java platform, access levels determine which members of those classes your own classes can use. The fourth column indicates whether all classes have access to the member.Īccess levels affect you in two ways. The third column indicates whether subclasses of the class declared outside this package have access to the member. The second column indicates whether classes in the same package as the class (regardless of their parentage) have access to the member. As you can see, a class always has access to its own members. The first data column indicates whether the class itself has access to the member defined by the access level. The following table shows the access to members permitted by each modifier. The protected modifier specifies that the member can only be accessed within its own package (as with package-private) and, in addition, by a subclass of its class in another package. The private modifier specifies that the member can only be accessed in its own class. For members, there are two additional access modifiers: private and protected. If a class has no modifier (the default, also known as package-private), it is visible only within its own package (packages are named groups of related classes you will learn about them in a laterĪt the member level, you can also use the public modifier or no modifier ( package-private) just as with top-level classes, and with the same meaning. At the member level public, private, protected, or package-private (no explicit modifier).Ī class may be declared with the modifier public, in which case that class is visible to all classes everywhere.At the top level public, or package-private (no explicit modifier).Access level modifiers determine whether other classes can use a particular field or invoke a particular method.
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