jdk.internal.jvmci.meta

Interface JavaType

All Superinterfaces:

TrustedInterface

All Known Subinterfaces:

HotSpotResolvedObjectType, ResolvedJavaType

All Known Implementing Classes:

HotSpotJavaType, HotSpotResolvedJavaType, HotSpotResolvedObjectTypeImpl, HotSpotResolvedPrimitiveType, HotSpotUnresolvedJavaType

public interface JavaType
extends TrustedInterface

Represents a resolved or unresolved type. Types include primitives, objects, void, and arrays thereof.

Method Summary

Modifier and Type	Method and Description
JavaType	getArrayClass() Gets the array class type representing an array with elements of this type.
JavaType	getComponentType() For array types, gets the type of the components, or null if this is not an array type.
default JavaType	getElementalType() Gets the elemental type for this given type.
Kind	getKind() Gets the kind of this type.
String	getName() Returns the name of this type in internal form.
default String	getUnqualifiedName() Returns an unqualified name of this type.
ResolvedJavaType	resolve(ResolvedJavaType accessingClass) Resolves this type to a ResolvedJavaType.
default String	toClassName() Returns this type's name in the same format as Class.getName().
default String	toJavaName() Gets the Java programming language name for this type.
default String	toJavaName(boolean qualified) Gets the Java programming language name for this type.

Method Detail

getName

String getName()

Returns the name of this type in internal form. The following are examples of strings returned by this method:

     "Ljava/lang/Object;"
     "I"
     "[[B"
 

getUnqualifiedName

default String getUnqualifiedName()

Returns an unqualified name of this type.

     "Object"
     "Integer"
 

getComponentType

JavaType getComponentType()

For array types, gets the type of the components, or null if this is not an array type. This method is analogous to Class.getComponentType().

getElementalType

default JavaType getElementalType()

Gets the elemental type for this given type. The elemental type is the corresponding zero dimensional type of an array type. For example, the elemental type of int[][][] is int. A non-array type is its own elemental type.

getArrayClass

JavaType getArrayClass()

Gets the array class type representing an array with elements of this type.

getKind

Kind getKind()

Gets the kind of this type.

resolve

ResolvedJavaType resolve(ResolvedJavaType accessingClass)

Resolves this type to a ResolvedJavaType.

Parameters:

accessingClass - the context of resolution (must not be null)

Returns:

the resolved Java type

Throws:

LinkageError - if the resolution failed

NullPointerException - if accessingClass is null

toJavaName

default String toJavaName()

Gets the Java programming language name for this type. The following are examples of strings returned by this method:

      java.lang.Object
      int
      boolean[][]
 

Returns:

the Java name corresponding to this type

toJavaName

default String toJavaName(boolean qualified)

Gets the Java programming language name for this type. The following are examples of strings returned by this method:

     qualified == true:
         java.lang.Object
         int
         boolean[][]
     qualified == false:
         Object
         int
         boolean[][]
 

Parameters:

qualified - specifies if the package prefix of this type should be included in the returned name

Returns:

the Java name corresponding to this type

toClassName

default String toClassName()

Returns this type's name in the same format as Class.getName().