com.sun.jdi

Interface ArrayType

All Superinterfaces:

Accessible, Comparable<ReferenceType>, Mirror, ReferenceType, Type

@Exported
public interface ArrayType
extends ReferenceType

Provides access to the class of an array and the type of its components in the target VM.

Since:

1.3

See Also:

ArrayReference

Method Summary

Modifier and Type	Method and Description
String	componentSignature() Gets the JNI signature of the components of this array class.
Type	componentType() Returns the component type of this array, as specified in the array declaration.
String	componentTypeName() Returns a text representation of the component type of this array.
ArrayReference	newInstance(int length) Creates a new instance of this array class in the target VM.

Methods inherited from interface com.sun.jdi.ReferenceType

allFields, allLineLocations, allLineLocations, allMethods, availableStrata, classLoader, classObject, constantPool, constantPoolCount, defaultStratum, equals, failedToInitialize, fieldByName, fields, genericSignature, getValue, getValues, hashCode, instances, isAbstract, isFinal, isInitialized, isPrepared, isStatic, isVerified, locationsOfLine, locationsOfLine, majorVersion, methods, methodsByName, methodsByName, minorVersion, name, nestedTypes, sourceDebugExtension, sourceName, sourceNames, sourcePaths, visibleFields, visibleMethods

Methods inherited from interface com.sun.jdi.Type

signature

Methods inherited from interface com.sun.jdi.Mirror

toString, virtualMachine

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface com.sun.jdi.Accessible

isPackagePrivate, isPrivate, isProtected, isPublic, modifiers

Method Detail

newInstance

ArrayReference newInstance(int length)

Creates a new instance of this array class in the target VM. The array is created with the given length and each component is initialized to is standard default value.

Parameters:

length - the number of components in the new array

Returns:

the newly created ArrayReference mirroring the new object in the target VM.

Throws:

VMCannotBeModifiedException - if the VirtualMachine is read-only - see VirtualMachine.canBeModified().

componentSignature

String componentSignature()

Gets the JNI signature of the components of this array class. The signature describes the declared type of the components. If the components are objects, their actual type in a particular run-time context may be a subclass of the declared class.

Returns:

a string containing the JNI signature of array components.

componentTypeName

String componentTypeName()

Returns a text representation of the component type of this array.

Returns:

a text representation of the component type.

componentType

Type componentType()
            throws ClassNotLoadedException

Returns the component type of this array, as specified in the array declaration.

Note: The component type of a array will always be created or loaded before the array - see The Java™ Virtual Machine Specification, section 5.3.3 - Creating Array Classes. However, although the component type will be loaded it may not yet be prepared, in which case the type will be returned but attempts to perform some operations on the returned type (e.g. fields()) will throw a ClassNotPreparedException. Use ReferenceType.isPrepared() to determine if a reference type is prepared.

Returns:

the Type of this array's components.

Throws:

ClassNotLoadedException

See Also:

Type, Field.type() - for usage examples