Module java.base

Package java.lang.module

Class ModuleDescriptor.Exports

java.lang.Object

java.lang.module.ModuleDescriptor.Exports

All Implemented Interfaces:

Comparable<ModuleDescriptor.Exports>

Enclosing class:

ModuleDescriptor

public static final class ModuleDescriptor.Exports
extends Object
implements Comparable<ModuleDescriptor.Exports>

A package exported by a module, may be qualified or unqualified.

Since:

9

See Also:

• ModuleDescriptor.exports()

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ModuleDescriptor.Exports.Modifier	A modifier on an exported package.

Method Summary

Modifier and Type	Method	Description
Set<AccessFlag>	accessFlags()	Returns the set of the module export flags for this module descriptor.
int	compareTo(ModuleDescriptor.Exports that)	Compares this module export to another.
boolean	equals(Object ob)	Tests this module export for equality with the given object.
int	hashCode()	Computes a hash code for this module export.
boolean	isQualified()	Returns true if this is a qualified export.
Set<ModuleDescriptor.Exports.Modifier>	modifiers()	Returns the set of modifiers.
String	source()	Returns the package name.
Set<String>	targets()	For a qualified export, returns the non-empty and immutable set of the module names to which the package is exported.
String	toString()	Returns a string describing the exported package.

Methods declared in class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Details

modifiers

public Set<ModuleDescriptor.Exports.Modifier> modifiers()

Returns the set of modifiers.

Returns:

A possibly-empty unmodifiable set of modifiers

accessFlags

public Set<AccessFlag> accessFlags()

Returns the set of the module export flags for this module descriptor.

Returns:

A possibly-empty unmodifiable set of export flags

See Java Virtual Machine Specification:

4.7.25 The Module Attribute

Since:

20

See Also:

• modifiers()

isQualified

public boolean isQualified()

Returns true if this is a qualified export.

Returns:

true if this is a qualified export

source

public String source()

Returns the package name.

Returns:

The package name

targets

public Set<String> targets()

For a qualified export, returns the non-empty and immutable set of the module names to which the package is exported. For an unqualified export, returns an empty set.

Returns:

The set of target module names or for an unqualified export, an empty set

compareTo

public int compareTo(ModuleDescriptor.Exports that)

Compares this module export to another.

Two Exports objects are compared by comparing the package names lexicographically. Where the packages names are equal then the sets of modifiers are compared in the same way that module modifiers are compared (see ModuleDescriptor.compareTo). Where the package names are equal and the set of modifiers are equal then the set of target modules are compared. This is done by sorting the names of the target modules in ascending order, and according to their natural ordering, and then comparing the corresponding elements lexicographically. Where the sets differ in size, and the larger set contains all elements of the smaller set, then the larger set is considered to succeed the smaller set.

Specified by:

compareTo in interface Comparable<ModuleDescriptor.Exports>

Parameters:

that - The module export to compare

Returns:

A negative integer, zero, or a positive integer if this module export is less than, equal to, or greater than the given export dependence

hashCode

public int hashCode()

Computes a hash code for this module export.

The hash code is based upon the modifiers, the package name, and for a qualified export, the set of modules names to which the package is exported. It satisfies the general contract of the Object.hashCode method.

Overrides:

hashCode in class Object

Returns:

The hash-code value for this module export

See Also:

• Object.equals(java.lang.Object)
• System.identityHashCode(java.lang.Object)

equals

public boolean equals(Object ob)

Tests this module export for equality with the given object.

If the given object is not an Exports then this method returns false. Two module exports objects are equal if their set of modifiers is equal, the package names are equal and the set of target module names is equal.

This method satisfies the general contract of the Object.equals method.

Overrides:

equals in class Object

Parameters:

ob - the object to which this object is to be compared

Returns:

true if, and only if, the given object is a module dependence that is equal to this module dependence

See Also:

• Object.hashCode()
• HashMap

toString

public String toString()

Returns a string describing the exported package.

Overrides:

toString in class Object

Returns:

A string describing the exported package