Unit |
clearAssertionStatus()
Sets the default assertion status for this class loader to false and discards any package defaults or class assertion status settings associated with the class loader. This method is provided so that class loaders can be made to ignore any command line or persistent assertion status settings and "start with a clean slate." Android-note: AssertionStatuses are unsupported. This method is a no-op.
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Class<*>! |
defineClass(b: ByteArray!, off: Int, len: Int)
Converts an array of bytes into an instance of class Class. Before the Class can be used it must be resolved. This method is deprecated in favor of the version that takes a binary name as its first argument, and is more secure.
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Class<*>! |
defineClass(name: String!, b: ByteArray!, off: Int, len: Int)
Converts an array of bytes into an instance of class Class. Before the Class can be used it must be resolved.
This method assigns a default ProtectionDomain to the newly defined class. The ProtectionDomain is effectively granted the same set of permissions returned when Policy.getPolicy().getPermissions(new CodeSource(null, null)) is invoked. The default protection domain is created on the first invocation of defineClass, and re-used on subsequent invocations.
To assign a specific ProtectionDomain to the class, use the defineClass method that takes a ProtectionDomain as one of its arguments.
This method defines a package in this class loader corresponding to the package of the Class (if such a package has not already been defined in this class loader). The name of the defined package is derived from the binary name of the class specified by the byte array b. Other properties of the defined package are as specified by Package.
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Class<*>! |
defineClass(name: String!, b: ByteArray!, off: Int, len: Int, protectionDomain: ProtectionDomain!)
Converts an array of bytes into an instance of class Class, with a given ProtectionDomain.
If the given ProtectionDomain is null, then a default protection domain will be assigned to the class as specified in the documentation for defineClass(String,byte[],int,int). Before the class can be used it must be resolved.
The first class defined in a package determines the exact set of certificates that all subsequent classes defined in that package must contain. The set of certificates for a class is obtained from the CodeSource within the ProtectionDomain of the class. Any classes added to that package must contain the same set of certificates or a SecurityException will be thrown. Note that if name is null, this check is not performed. You should always pass in the binary name of the class you are defining as well as the bytes. This ensures that the class you are defining is indeed the class you think it is.
This method defines a package in this class loader corresponding to the package of the Class (if such a package has not already been defined in this class loader). The name of the defined package is derived from the binary name of the class specified by the byte array b. Other properties of the defined package are as specified by Package.
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Class<*>! |
defineClass(name: String!, b: ByteBuffer!, protectionDomain: ProtectionDomain!)
Converts a ByteBuffer into an instance of class Class, with the given ProtectionDomain. If the given ProtectionDomain is null, then a default protection domain will be assigned to the class as specified in the documentation for defineClass(String,byte[],int,int). Before the class can be used it must be resolved.
The rules about the first class defined in a package determining the set of certificates for the package, the restrictions on class names, and the defined package of the class are identical to those specified in the documentation for defineClass(String,byte[],int,int,ProtectionDomain).
An invocation of this method of the form cl.defineClass(name, bBuffer, pd) yields exactly the same result as the statements
...
byte[] temp = new byte[bBuffer.remaining()];
bBuffer.get(temp);
return cl.defineClass(name, temp, 0, temp.length, pd);
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Package! |
definePackage(name: String!, specTitle: String!, specVersion: String!, specVendor: String!, implTitle: String!, implVersion: String!, implVendor: String!, sealBase: URL!)
Defines a package by name in this ClassLoader.
Package names must be unique within a class loader and cannot be redefined or changed once created.
If a class loader wishes to define a package with specific properties, such as version information, then the class loader should call this definePackage method before calling defineClass. Otherwise, the defineClass method will define a package in this class loader corresponding to the package of the newly defined class; the properties of this defined package are specified by Package.
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Class<*>! |
findLoadedClass(name: String!)
Returns the class with the given binary name if this loader has been recorded by the Java virtual machine as an initiating loader of a class with that binary name. Otherwise null is returned.
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Class<*>! |
findSystemClass(name: String!)
Finds a class with the specified binary name, loading it if necessary.
This method loads the class through the system class loader (see getSystemClassLoader()). The Class object returned might have more than one ClassLoader associated with it. Subclasses of ClassLoader need not usually invoke this method, because most class loaders need to override just findClass(String).
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Array<Package!>! |
getPackages()
Returns all of the Packages that have been defined by this class loader and its ancestors. The returned array may contain more than one Package object of the same package name, each defined by a different class loader in the class loader hierarchy.
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ClassLoader! |
getParent()
Returns the parent class loader for delegation. Some implementations may use null to represent the bootstrap class loader. This method will return null in such implementations if this class loader's parent is the bootstrap class loader.
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URL! |
getResource(name: String!)
Finds the resource with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code.
The name of a resource is a '/'-separated path name thatf identifies the resource.
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InputStream! |
getResourceAsStream(name: String!)
Returns an input stream for reading the specified resource.
The search order is described in the documentation for getResource(String).
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Enumeration<URL!>! |
getResources(name: String!)
Finds all the resources with the given name. A resource is some data (images, audio, text, etc) that can be accessed by class code in a way that is independent of the location of the code.
The name of a resource is a /-separated path name that identifies the resource.
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ClassLoader! |
getSystemClassLoader()
Returns the system class loader. This is the default delegation parent for new ClassLoader instances, and is typically the class loader used to start the application.
This method is first invoked early in the runtime's startup sequence, at which point it creates the system class loader. This class loader will be the context class loader for the main application thread (for example, the thread that invokes the main method of the main class).
The default system class loader is an implementation-dependent instance of this class.
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URL! |
getSystemResource(name: String!)
Find a resource of the specified name from the search path used to load classes. This method locates the resource through the system class loader (see getSystemClassLoader()).
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InputStream! |
getSystemResourceAsStream(name: String!)
Open for reading, a resource of the specified name from the search path used to load classes. This method locates the resource through the system class loader (see getSystemClassLoader()).
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Enumeration<URL!>! |
getSystemResources(name: String!)
Finds all resources of the specified name from the search path used to load classes. The resources thus found are returned as an Enumeration of URL objects.
The search order is described in the documentation for getSystemResource(String).
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Class<*>! |
loadClass(name: String!)
Loads the class with the specified binary name. This method searches for classes in the same manner as the loadClass(String,boolean) method. It is invoked by the Java virtual machine to resolve class references. Invoking this method is equivalent to invoking loadClass(name,.
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Class<*>! |
loadClass(name: String!, resolve: Boolean)
Loads the class with the specified binary name. The default implementation of this method searches for classes in the following order:
- Invoke
findLoadedClass(String) to check if the class has already been loaded.
- Invoke the
loadClass method on the parent class loader. If the parent is null the class loader built into the virtual machine is used, instead.
- Invoke the
findClass(String) method to find the class.
If the class was found using the above steps, and the resolve flag is true, this method will then invoke the resolveClass(Class) method on the resulting Class object.
Subclasses of ClassLoader are encouraged to override findClass(String), rather than this method.
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Boolean |
registerAsParallelCapable()
Registers the caller as isRegisteredAsParallelCapable() parallel capable. The registration succeeds if and only if all of the following conditions are met:
- no instance of the caller has been created
- all of the super classes (except class Object) of the caller are registered as parallel capable
Note that once a class loader is registered as parallel capable, there is no way to change it back.
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Unit |
resolveClass(c: Class<*>!)
Links the specified class. This (misleadingly named) method may be used by a class loader to link a class. If the class c has already been linked, then this method simply returns. Otherwise, the class is linked as described in the "Execution" chapter of The Java Language Specification.
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Unit |
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