com.sun.squawk
Class Ref

java.lang.Object
  com.sun.squawk.Ref

public class Ref
extends Object

Abstract base class for reference objects. This class defines the operations common to all reference objects. Because reference objects are implemented in close cooperation with the garbage collector, this class may not be subclassed directly.

Since:

JDK1.2, CLDC 1.1

Version:

12/19/01 (CLDC 1.1)

Author:

Mark Reinhold, Doug Simon, Andrew Crouch

Constructor Summary

Ref(Object referent)

Method Summary

void	clear() Clears this reference object.
Object	get() Returns this reference object's referent.
static void	main(String[] args)
String	toString() Returns a string representation of the object.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Ref

public Ref(Object referent)

Method Detail

get

public Object get()

Returns this reference object's referent. If this reference object has been cleared, either by the program or by the garbage collector, then this method returns null.

Returns:

The object to which this reference refers, or null if this reference object has been cleared

clear

public void clear()

Clears this reference object.

toString

public String toString()

Description copied from class: Object

Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method.

The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of:

 getClass().getName() + '@' + Integer.toHexString(hashCode())
 

Overrides:

toString in class Object

Returns:

a string representation of the object.

main

public static void main(String[] args)