Struct Java

pub struct Java<T: JavaObject> { /* private fields */ }

An owned reference to a non-null Java object of type T.

The JVM will not release this object until the Rust reference is dropped.

Implementations

impl<R: JavaObject> Java<R>

pub fn upcast<S>(self) -> Java<S>

where R: Upcast<S>, S: JavaObject + 'static,

Trait Implementations

impl<R, S> AsRef<S> for Java<R>

where R: Upcast<S>, S: JavaObject + 'static,

fn as_ref(&self) -> &S

Converts this type into a shared reference of the (usually inferred) input type.

impl<T: JavaObject> Debug for Java<T>

fn fmt(&self, __f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: JavaObject> Deref for Java<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T: JavaObject> Drop for Java<T>

fn drop(&mut self)

Executes the destructor for this type.

impl<T: JavaObject> Hash for Java<T>

fn hash<__H: Hasher>(&self, __state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<J> IntoRust<Java<J>> for &J

where J: JavaObject,

fn into_rust<'jvm>(self, jvm: &mut Jvm<'jvm>) -> LocalResult<'jvm, Java<J>>

impl<R, J> IntoRust<R> for &Java<J>

where J: JavaObject, for<'a> &'a J: IntoRust<R>,

fn into_rust<'jvm>(self, jvm: &mut Jvm<'jvm>) -> LocalResult<'jvm, R>

impl<R, J> IntoRust<R> for Java<J>

where J: JavaObject, for<'a> &'a J: IntoRust<R>,

fn into_rust<'jvm>(self, jvm: &mut Jvm<'jvm>) -> LocalResult<'jvm, R>

impl<T> JDeref for Java<T>

where T: JavaObject,

fn jderef(&self) -> &T

Dereference to a plain reference to the java object.

impl<R: JavaObject> JvmOp for &Java<R>

type Output<'jvm> = &Java<R>

fn do_jni<'jvm>( self, _jvm: &mut Jvm<'jvm>, ) -> LocalResult<'jvm, Self::Output<'jvm>>

Internal method

fn assert_not_null<T>(self) -> NotNull<Self>

where T: JavaObject, for<'jvm> Self: JvmOp<Output<'jvm> = Option<Local<'jvm, T>>>,

fn upcast<To>(self) -> AsUpcast<Self, To>

where for<'jvm> Self::Output<'jvm>: AsJRef<To>, To: JavaObject,

Most duchess-wrapped Java objects will automatically be able to call all methods defined on any of its super classes or interfaces it implements, but this can be used to “force” the output of the operation to be typed as an explicit super type To.

fn catch<J>(self) -> TryCatch<Self, J>

where J: Upcast<Throwable>,

fn execute<R>(self) -> Result<R>

where for<'jvm> Self::Output<'jvm>: IntoRust<R>,

Execute on the JVM, starting a JVM instance if necessary.

fn execute_with<'jvm, R>(self, jvm: &mut Jvm<'jvm>) -> LocalResult<'jvm, R>

where for<'j> Self::Output<'j>: IntoRust<R>,

Internal method

impl<T: JavaObject> PartialEq for Java<T>

fn eq(&self, __other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> TryJDeref for Java<T>

where T: JavaObject,

type Java = T

The Java type (e.g., java::lang::Object).

fn try_jderef(&self) -> Nullable<&T>

Dereference to a plain reference to the java object, or Err if it is null.

impl<T: JavaObject> Eq for Java<T>

impl<T: JavaObject> Send for Java<T>

impl<T: JavaObject> Sync for Java<T>