ResourceType (Resource Management )

java.lang.Object
- jdk.management.resource.ResourceType

```
public class ResourceType
extends Object
```
A ResourceType with a name. The resource name is an opaque string and is not localized. A number of common ResourceTypes are defined. ResourceTypes may also be created by of(java.lang.String).

Since:

8u40

Field Summary

Fields
Modifier and Type	Field and Description
`static ResourceType`	`DATAGRAM_OPEN` DATAGRAM_OPEN - number of open datagram sockets.
`static ResourceType`	`DATAGRAM_READ` DATAGRAM_READ - number of bytes of datagrams read.
`static ResourceType`	`DATAGRAM_RECEIVED` DATAGRAM_RECIEVED - number of datagrams received.
`static ResourceType`	`DATAGRAM_SENT` DATAGRAM_SENT - number of datagrams sent.
`static ResourceType`	`DATAGRAM_WRITE` DATAGRAM_WRITE - number of bytes of datagrams written.
`static ResourceType`	`FILE_OPEN` FILE_OPEN - number of open files.
`static ResourceType`	`FILE_READ` FILE_READ - number of bytes read from files.
`static ResourceType`	`FILE_WRITE` FILE_WRITE - number of bytes written to files.
`static ResourceType`	`FILEDESCRIPTOR_OPEN` FILEDESCRIPTOR_OPEN - number of open file descriptors.
`static ResourceType`	`HEAP_ALLOCATED` HEAP_ALLOCATED - running total of heap allocations in bytes.
`static ResourceType`	`HEAP_RETAINED` HEAP_RETAINED - number of bytes of heap memory in use.
`static ResourceType`	`SOCKET_OPEN` SOCKET_OPEN - number of open sockets.
`static ResourceType`	`SOCKET_READ` SOCKET_READ - number of bytes read from sockets.
`static ResourceType`	`SOCKET_WRITE` SOCKET_WRITE - number of bytes written to sockets.
`static ResourceType`	`STDERR_WRITE` STDERR_WRITE - number of bytes written to the standard error stream.
`static ResourceType`	`STDIN_READ` STDIN_READ - number of bytes read from the standard input stream.
`static ResourceType`	`STDOUT_WRITE` STDOUT_WRITE - number of bytes written to the standard output stream.
`static ResourceType`	`THREAD_CPU` THREAD_CPU - amount of cpu time used by threads, in nanoseconds.
`static ResourceType`	`THREAD_CREATED` THREAD_CREATED - number of threads created and active.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one based on the name.
`String`	`getName()` Returns the name of the resource.
`int`	`hashCode()` Returns a hash code value for this ResourceType based on the name.
`static ResourceType`	`of(String name)` Returns a ResourceType for the named resource.
`String`	`toString()` Returns a string representation of the object.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - FILE_OPEN
```
public static final ResourceType FILE_OPEN
```
    FILE_OPEN - number of open files.
  - FILE_READ
```
public static final ResourceType FILE_READ
```
    FILE_READ - number of bytes read from files.
  - FILE_WRITE
```
public static final ResourceType FILE_WRITE
```
    FILE_WRITE - number of bytes written to files.
  - STDERR_WRITE
```
public static final ResourceType STDERR_WRITE
```
    STDERR_WRITE - number of bytes written to the standard error stream.
  - STDIN_READ
```
public static final ResourceType STDIN_READ
```
    STDIN_READ - number of bytes read from the standard input stream.
  - STDOUT_WRITE
```
public static final ResourceType STDOUT_WRITE
```
    STDOUT_WRITE - number of bytes written to the standard output stream.
  - SOCKET_OPEN
```
public static final ResourceType SOCKET_OPEN
```
    SOCKET_OPEN - number of open sockets.
  - SOCKET_READ
```
public static final ResourceType SOCKET_READ
```
    SOCKET_READ - number of bytes read from sockets.
  - SOCKET_WRITE
```
public static final ResourceType SOCKET_WRITE
```
    SOCKET_WRITE - number of bytes written to sockets.
  - DATAGRAM_OPEN
```
public static final ResourceType DATAGRAM_OPEN
```
    DATAGRAM_OPEN - number of open datagram sockets.
  - DATAGRAM_RECEIVED
```
public static final ResourceType DATAGRAM_RECEIVED
```
    DATAGRAM_RECIEVED - number of datagrams received.
  - DATAGRAM_SENT
```
public static final ResourceType DATAGRAM_SENT
```
    DATAGRAM_SENT - number of datagrams sent.
  - DATAGRAM_READ
```
public static final ResourceType DATAGRAM_READ
```
    DATAGRAM_READ - number of bytes of datagrams read.
  - DATAGRAM_WRITE
```
public static final ResourceType DATAGRAM_WRITE
```
    DATAGRAM_WRITE - number of bytes of datagrams written.
  - THREAD_CREATED
```
public static final ResourceType THREAD_CREATED
```
    THREAD_CREATED - number of threads created and active.
  - THREAD_CPU
```
public static final ResourceType THREAD_CPU
```
    THREAD_CPU - amount of cpu time used by threads, in nanoseconds.
  - HEAP_RETAINED
```
public static final ResourceType HEAP_RETAINED
```
    HEAP_RETAINED - number of bytes of heap memory in use.
  - HEAP_ALLOCATED
```
public static final ResourceType HEAP_ALLOCATED
```
    HEAP_ALLOCATED - running total of heap allocations in bytes.
  - FILEDESCRIPTOR_OPEN
```
public static final ResourceType FILEDESCRIPTOR_OPEN
```
    FILEDESCRIPTOR_OPEN - number of open file descriptors.
- Method Detail
  - of
```
public static ResourceType of(String name)
```
    Returns a ResourceType for the named resource.
    
    Parameters:
    
    name - the resource name
    
    Returns:
    
    a ResourceType for the named resource
    
    Throws:
    
    IllegalArgumentException - if the length of the name is zero
  - getName
```
public String getName()
```
    Returns the name of the resource. Resource names are opaque strings that are not localized.
    
    Returns:
    
    the name of the resource
  - toString
```
public String toString()
```
    Description copied from class: java.lang.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.
  - hashCode
```
public int hashCode()
```
    Returns a hash code value for this ResourceType based on the name.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    Returns a hash code value based on the hashCode of the name.
    
    See Also:
    
    Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)
  - equals
```
public boolean equals(Object obj)
```
    Indicates whether some other object is "equal to" this one based on the name.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    obj - the reference object with which to compare
    
    Returns:
    
    true if the pother object is a ResourceType and name of this ResourceType is the same as the name of the other ResourceType; false otherwise.
    
    See Also:
    
    Object.hashCode(), HashMap

Class ResourceType

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

FILE_OPEN

FILE_READ

FILE_WRITE

STDERR_WRITE

STDIN_READ

STDOUT_WRITE

SOCKET_OPEN

SOCKET_READ

SOCKET_WRITE

DATAGRAM_OPEN

DATAGRAM_RECEIVED

DATAGRAM_SENT

DATAGRAM_READ

DATAGRAM_WRITE

THREAD_CREATED

THREAD_CPU

HEAP_RETAINED

HEAP_ALLOCATED

FILEDESCRIPTOR_OPEN

Method Detail

of

getName

toString

hashCode

equals