public abstract class

Sensor

extends Object
java.lang.Object
   ↳ sun.management.Sensor

Class Overview

An abstract sensor.

A AbstractSensor object consists of two attributes:

  • on is a boolean flag indicating if a sensor is triggered. This flag will be set or cleared by the component that owns the sensor.
  • count is the total number of times that a sensor has been triggered.

Summary

Public Constructors
Sensor(String name)
Constructs a Sensor object.
Public Methods
void clear()
Clears this sensor.
void clear(int increment)
Clears this sensor and increments the count with the input increment.
long getCount()
Returns the total number of times that this sensor has been triggered.
String getName()
Returns the name of this sensor.
boolean isOn()
Tests if this sensor is currently on.
String toString()
Returns a string representation of the object.
void trigger(int increment)
Triggers this sensor.
void trigger(int increment, MemoryUsage usage)
Triggers this sensor piggybacking a memory usage object.
void trigger()
Triggers this sensor.
[Expand]
Inherited Methods
From class java.lang.Object

Public Constructors

public Sensor (String name)

Constructs a Sensor object.

Parameters
name The name of this sensor.

Public Methods

public void clear ()

Clears this sensor.

public void clear (int increment)

Clears this sensor and increments the count with the input increment.

public long getCount ()

Returns the total number of times that this sensor has been triggered.

Returns
  • the total number of times that this sensor has been triggered.

public String getName ()

Returns the name of this sensor.

Returns
  • the name of this sensor.

public boolean isOn ()

Tests if this sensor is currently on.

Returns
  • true if the sensor is currently on; false otherwise.

public String toString ()

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())

Returns
  • a string representation of the object.

public void trigger (int increment)

Triggers this sensor. This method sets this sensor on and increments the count with the input increment.

public void trigger (int increment, MemoryUsage usage)

Triggers this sensor piggybacking a memory usage object. This method sets this sensor on and increments the count with the input increment.

public void trigger ()

Triggers this sensor. This method first sets this sensor on and increments its sensor count.