java.lang
Class Class

java.lang.Object
  java.lang.Class

public final class Class

extends Object

Constructor Summary

protected

Class()

Method Summary

boolean	equals(Object other) Returns if this object is considered equal to the other object.
static Class	forName(String className) This attempts to load a Class given the class name.
ClassLoader	getClassLoader() Under Ewe this will either return a valid ClassLoader or null if the class was loaded by the normal bootstrap (VM) loader.
Class	getComponentType() Return a Class representing the component type IF this class represents an array.
Constructor	getConstructor(Class[] parameterTypes)
Constructor[]	getConstructors()
Class[]	getDeclaredClasses() This returns an array of Classes representing all the named inner classes declared by this class.
Constructor	getDeclaredConstructor(Class[] parameterTypes)
Constructor[]	getDeclaredConstructors()
Field	getDeclaredField(String name)
Field[]	getDeclaredFields()
Method	getDeclaredMethod(String name, Class[] parameterTypes)
Method[]	getDeclaredMethods()
Field	getField(String name)
Field[]	getFields()
Class[]	getInterfaces() Returns an array of interface implemented by this class.
Method	getMethod(String name, Class[] parameterTypes)
Method[]	getMethods()
int	getModifiers()
String	getName() Return the name of the class in dot notation (e.g.
Object[]	getSigners() This currently always returns an array of zero length as signers are not currently supported.
Class	getSuperclass() Return the superclass of the represented class.
int	hashCode() Returns a hashCode for the object.
boolean	isArray() Returns true if the class represents an array.
boolean	isAssignableFrom(Class other) Returns true if the this class is a superclass or superinterface of the specified other class.
boolean	isInstance(Object obj) This is the equivalent of the instanceof operator.
boolean	isInterface() Returns true if this class represents an interface.
boolean	isPrimitive() Checks if this class represents a primitive type.
Object	newInstance()
String	toString() Return a String representation of this object.

Methods inherited from class java.lang.Object

clone, finalize, getClass

Constructor Detail

Class

protected Class()

Method Detail

getName

public String getName()

Return the name of the class in dot notation (e.g. "java.lang.Object")

toString

public String toString()

Description copied from class: Object

Return a String representation of this object.

Overrides:

toString in class Object

Returns:

a String representing this object.

getClassLoader

public ClassLoader getClassLoader()

Under Ewe this will either return a valid ClassLoader or null if the class was loaded by the normal bootstrap (VM) loader. Under other Java implementations it is allowed to return a value other than null for the bootstrap loader.

forName

public static Class forName(String className)
                     throws ClassNotFoundException

This attempts to load a Class given the class name. If the class is not accessable via the system loader it will throw a ClassNotFoundException.

To obtain a Class for an array using forName you must provide a name in the form: "[Java_Type" where Java_Type is one of:

'Z' - boolean
'B' - byte
'C' - char
'S' - short
'I' - int
'J' - long
'D' - double
'F' - float
"Lfull_class_name;" - class (e.g.: Ljava.lang.String)

When specifying an array of Objects using "[Lfull_class_name;" if the class full_class_name could not be found a ClassNotFoundException will be thrown.

To get a Class that represents a primitive type call forName() to get a Class representing the array of the primitive type, and then call getComponentType() on that returned class. For example:

Class intClass = Class.forName("[I").getComponentType();

Throws:

ClassNotFoundException

equals

public boolean equals(Object other)

Description copied from class: Object

Returns if this object is considered equal to the other object.

Overrides:

equals in class Object

Parameters:

other - Another object to compare to.

Returns:

true if this object is considered equal to the other object.

getSuperclass

public Class getSuperclass()

Return the superclass of the represented class. If the class represented is an interface or the Object class, this will return null.

getInterfaces

public Class[] getInterfaces()

Returns an array of interface implemented by this class. If this class represents an interface, it returns an array of interfaces extended by this interface. If the class implements or extends no interfaces, it will return an array of length zero.

isInterface

public boolean isInterface()

Returns true if this class represents an interface.

isAssignableFrom

public boolean isAssignableFrom(Class other)

Returns true if the this class is a superclass or superinterface of the specified other class.

isInstance

public boolean isInstance(Object obj)

This is the equivalent of the instanceof operator. Checks if the specified object is a derived class of this class, or implements the interface represented by this class.

isPrimitive

public boolean isPrimitive()

Checks if this class represents a primitive type.

Returns:

true if this Class represents a primitive type.

isArray

public boolean isArray()

Returns true if the class represents an array.

getComponentType

public Class getComponentType()

Return a Class representing the component type IF this class represents an array.

hashCode

public int hashCode()

Description copied from class: Object

Returns a hashCode for the object. The general contract of hashCode is:

An object must return the same hash code for its entire existence.

If two objects are considered equal by the equals() method, they should return the same hash code. Not all Objects will do this and you should only use hashCode() from Objects which declare an overrided version of hashCode(). The only Objects which provide consistent and correct hash codes under Ewe are Object, String and Class.

Overrides:

hashCode in class Object

getSigners

public Object[] getSigners()

This currently always returns an array of zero length as signers are not currently supported.

getModifiers

public int getModifiers()

getDeclaredClasses

public Class[] getDeclaredClasses()

This returns an array of Classes representing all the named inner classes declared by this class. It returns an empty array if the Class declares no classes.

newInstance

public Object newInstance()
                   throws InstantiationException,
                          IllegalAccessException

Throws:

InstantiationException

IllegalAccessException

getField

public Field getField(String name)
               throws NoSuchFieldException,
                      SecurityException

Throws:

NoSuchFieldException

SecurityException

getDeclaredField

public Field getDeclaredField(String name)
                       throws NoSuchFieldException,
                              SecurityException

Throws:

NoSuchFieldException

SecurityException

getFields

public Field[] getFields()
                  throws SecurityException

Throws:

SecurityException

getDeclaredFields

public Field[] getDeclaredFields()
                          throws SecurityException

Throws:

SecurityException

getMethod

public Method getMethod(String name,
                        Class[] parameterTypes)
                 throws NoSuchMethodException,
                        SecurityException

Throws:

NoSuchMethodException

SecurityException

getMethods

public Method[] getMethods()
                    throws SecurityException

Throws:

SecurityException

getDeclaredMethod

public Method getDeclaredMethod(String name,
                                Class[] parameterTypes)
                         throws NoSuchMethodException,
                                SecurityException

Throws:

NoSuchMethodException

SecurityException

getDeclaredMethods

public Method[] getDeclaredMethods()
                            throws SecurityException

Throws:

SecurityException

getConstructor

public Constructor getConstructor(Class[] parameterTypes)
                           throws NoSuchMethodException,
                                  SecurityException

Throws:

NoSuchMethodException

SecurityException

getConstructors

public Constructor[] getConstructors()
                              throws SecurityException

Throws:

SecurityException

getDeclaredConstructor

public Constructor getDeclaredConstructor(Class[] parameterTypes)
                                   throws NoSuchMethodException,
                                          SecurityException

Throws:

NoSuchMethodException

SecurityException

getDeclaredConstructors

public Constructor[] getDeclaredConstructors()
                                      throws SecurityException

Throws:

SecurityException