Class Optional<T>
public class Optional<T> : JVMBridgeBase<Optional<T>>, IDynamicMetaObjectProvider, IJVMBridgeCore, IEquatable<IJVMBridgeBase>, IDisposable, IJVMBridgeBaseStatic, IJVMBridgeBase, IJVMBridgeDefinitionType Parameters
T
- Inheritance
-
Optional<T>
- Implements
- Inherited Members
- Extension Methods
Constructors
Optional()
Default constructor: even if the corresponding Java class does not have one, it is mandatory for JCOBridge
public Optional()Optional(IJVMBridgeBaseInitializer)
Internal constructor: used internally from JCOBridge
[Obsolete("This public initializer is needed for JCOBridge internal use, other uses can produce unidentible behaviors.")]
public Optional(IJVMBridgeBaseInitializer initializer)Parameters
initializerIJVMBridgeBaseInitializer
Optional(params object[])
Generic constructor: it is useful for JCOBridge when there is a derived class which needs to pass arguments to the highest JVMBridgeBase class
public Optional(params object[] args)Parameters
argsobject[]
Properties
BridgeClassName
Java class name to be instantiated
public override string BridgeClassName { get; }Property Value
IsBridgeAbstract
true if the BridgeClassName is an abstract class, i.e. cannot be created an instance
public override bool IsBridgeAbstract { get; }Property Value
IsBridgeCloseable
true if the BridgeClassName implements Closeable
public override bool IsBridgeCloseable { get; }Property Value
IsBridgeInterface
true if the BridgeClassName is an interface, i.e. does not have any public constructor
public override bool IsBridgeInterface { get; }Property Value
IsBridgeStatic
true if the BridgeClassName is a static class, i.e. does not have any public constructor
public override bool IsBridgeStatic { get; }Property Value
Methods
Empty()
public static Optional<T> Empty()Returns
Filter<Arg0objectSuperT>(Predicate<Arg0objectSuperT>)
public Optional<T> Filter<Arg0objectSuperT>(Predicate<Arg0objectSuperT> arg0) where Arg0objectSuperT : TParameters
Returns
Type Parameters
Arg0objectSuperTT
FlatMap<U, Arg0objectSuperT>(Function<Arg0objectSuperT, Optional<U>>)
public Optional<U> FlatMap<U, Arg0objectSuperT>(Function<Arg0objectSuperT, Optional<U>> arg0) where Arg0objectSuperT : TParameters
Returns
Type Parameters
UArg0objectSuperTT
Get()
public T Get()Returns
- T
T
IfPresent<Arg0objectSuperT>(Consumer<Arg0objectSuperT>)
public void IfPresent<Arg0objectSuperT>(Consumer<Arg0objectSuperT> arg0) where Arg0objectSuperT : TParameters
Type Parameters
Arg0objectSuperTT
IsPresent()
public bool IsPresent()Returns
Map<U, Arg0objectSuperT, Arg0ExtendsU>(Function<Arg0objectSuperT, Arg0ExtendsU>)
public Optional<U> Map<U, Arg0objectSuperT, Arg0ExtendsU>(Function<Arg0objectSuperT, Arg0ExtendsU> arg0) where Arg0objectSuperT : T where Arg0ExtendsU : UParameters
Returns
Type Parameters
UArg0objectSuperTTArg0ExtendsUU
Of(T)
public static Optional<T> Of(T arg0)Parameters
arg0TT
Returns
OfNullable(T)
public static Optional<T> OfNullable(T arg0)Parameters
arg0TT
Returns
OrElse(T)
public T OrElse(T arg0)Parameters
arg0TT
Returns
- T
T
OrElseGet<Arg0ExtendsT>(Supplier<Arg0ExtendsT>)
public T OrElseGet<Arg0ExtendsT>(Supplier<Arg0ExtendsT> arg0) where Arg0ExtendsT : TParameters
Returns
- T
T
Type Parameters
Arg0ExtendsTT
OrElseThrow<Arg0ExtendsX, X>(Supplier<Arg0ExtendsX>)
public T OrElseThrow<Arg0ExtendsX, X>(Supplier<Arg0ExtendsX> arg0) where Arg0ExtendsX : XParameters
Returns
- T
T
Type Parameters
Arg0ExtendsXXX
Exceptions
Operators
implicit operator Optional(Optional<T>)
Converter from Optional<T> to Optional
public static implicit operator Optional(Optional<T> t)Parameters
tOptional<T>