BluetoothDeviceClass

java.lang.Object
- ohos.bluetooth.BluetoothDeviceClass

所有已实现的接口:

Sequenceable
```
public final class BluetoothDeviceClass
extends Object
implements Sequenceable
```
The definition of the bluetooth device's capabilities.

从以下版本开始:

1

嵌套类概要

嵌套类
限定符和类型	类	说明
`static class`	`BluetoothDeviceClass.MajorClass`	Defines all major class values in bit mask.
`static class`	`BluetoothDeviceClass.MajorMinorClass`	Defines the bit mask values of all major and minor classes.
`static class`	`BluetoothDeviceClass.Service`	Define all service bit mask values.

从接口继承的嵌套类/接口 ohos.utils.Sequenceable
Sequenceable.Producer<T>

方法概要

所有方法实例方法具体方法
限定符和类型	方法	说明
`boolean`	`equals(Object object)`	Indicates whether some other object is "equal to" this one.
`int`	`getMajorClass()`	Obtains the major class value of this device class.
`int`	`getMajorMinorClass()`	Obtains the major and minor class values of the Bluetooth device.
`int`	`hashCode()`	Returns a hash code value for the object.
`boolean`	`isServiceSupported(int service)`	Checks whether the service is supported by this device class.
`boolean`	`marshalling(Parcel out)`	Marshals this `Sequenceable` object into a `Parcel`.
`String`	`toString()`	Returns a string representation of the object.
`boolean`	`unmarshalling(Parcel in)`	Unmarshals this `Sequenceable` object from a `Parcel`.

从类继承的方法 java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 ohos.utils.Sequenceable
hasFileDescriptor

- 方法详细资料
  - getMajorClass
```
public int getMajorClass()
```
    Obtains the major class value of this device class. Major class values are defined in BluetoothDeviceClass.MajorClass.
    
    返回:
    
    Returns the major class value of this device class.
  - isServiceSupported
```
public boolean isServiceSupported(int service)
```
    Checks whether the service is supported by this device class. All service bit mask values are defined in BluetoothDeviceClass.Service.
    
    参数:
    
    service - Indicates the service value defined in BluetoothDeviceClass.Service.
    
    返回:
    
    Returns true if the service is supported by this device class; returns false otherwise.
  - getMajorMinorClass
```
public int getMajorMinorClass()
```
    Obtains the major and minor class values of the Bluetooth device.
    
    返回:
    
    Returns the major and minor class values of the Bluetooth device.
    
    从以下版本开始:
    
    3
  - marshalling
```
public boolean marshalling(Parcel out)
```
    从接口复制的说明: Sequenceable
    
    Marshals this Sequenceable object into a Parcel.
    
    指定者:
    
    marshalling 在接口中 Sequenceable
    
    参数:
    
    out - Indicates the Parcel object to which the Sequenceable object will be marshaled..
    
    返回:
    
    Returns true if the marshalling is successful; returns false otherwise.
  - unmarshalling
```
public boolean unmarshalling(Parcel in)
```
    从接口复制的说明: Sequenceable
    
    Unmarshals this Sequenceable object from a Parcel.
    
    指定者:
    
    unmarshalling 在接口中 Sequenceable
    
    参数:
    
    in - Indicates the Parcel object into which the Sequenceable object has been marshaled.
    
    返回:
    
    Returns true if the unmarshalling is successful; returns false otherwise.
  - equals
```
public boolean equals(Object object)
```
    从类复制的说明: Object
    Indicates whether some other object is "equal to" this one.
    The equals method implements an equivalence relation on non-null object references:
    - It is reflexive: for any non-null reference value x, x.equals(x) should return true.
    - It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
    - It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
    - It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
    - For any non-null reference value x, x.equals(null) should return false.
    The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).
    Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.
    覆盖:
    
    equals 在类中 Object
    
    参数:
    
    object - the reference object with which to compare.
    
    返回:
    
    true if this object is the same as the obj argument; false otherwise.
    
    另请参阅:
    
    Object.hashCode(), HashMap
  - hashCode
```
public int hashCode()
```
    从类复制的说明: Object
    Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by HashMap.
    The general contract of hashCode is:
    - Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
    - If two objects are equal according to the equals(Object) method, then calling the hashCode method on each of the two objects must produce the same integer result.
    - It is not required that if two objects are unequal according to the Object.equals(java.lang.Object) method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
    As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the Java™ programming language.)
    覆盖:
    
    hashCode 在类中 Object
    
    返回:
    
    a hash code value for this object.
    
    另请参阅:
    
    Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)
  - toString
```
public String toString()
```
    从类复制的说明: 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())
    覆盖:
    
    toString 在类中 Object
    
    返回:
    
    a string representation of the object.

类 BluetoothDeviceClass

嵌套类概要

从接口继承的嵌套类/接口 ohos.utils.Sequenceable

方法概要

从类继承的方法 java.lang.Object

从接口继承的方法 ohos.utils.Sequenceable

方法详细资料

getMajorClass

isServiceSupported

getMajorMinorClass

marshalling

unmarshalling

equals

hashCode

toString