Module java.compiler

Package javax.lang.model

Enum SourceVersion

java.lang.Object

java.lang.Enum<SourceVersion>

javax.lang.model.SourceVersion

All Implemented Interfaces:

Serializable, Comparable<SourceVersion>, Constable

public enum SourceVersion
extends Enum<SourceVersion>

Source versions of the Java™ programming language. See the appropriate edition of The Java™ Language Specification for information about a particular source version.

Note that additional source version constants will be added to model future releases of the language.

Since:

1.6

Nested Class Summary

Nested classes/interfaces declared in class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
RELEASE_0	The original version.
RELEASE_1	The version recognized by the Java Platform 1.1.
RELEASE_10	The version recognized by the Java Platform, Standard Edition 10.
RELEASE_11	The version recognized by the Java Platform, Standard Edition 11.
RELEASE_12	The version recognized by the Java Platform, Standard Edition 12.
RELEASE_13	The version recognized by the Java Platform, Standard Edition 13.
RELEASE_2	The version recognized by the Java 2 Platform, Standard Edition, v 1.2.
RELEASE_3	The version recognized by the Java 2 Platform, Standard Edition, v 1.3.
RELEASE_4	The version recognized by the Java 2 Platform, Standard Edition, v 1.4.
RELEASE_5	The version recognized by the Java 2 Platform, Standard Edition 5.0.
RELEASE_6	The version recognized by the Java Platform, Standard Edition 6.
RELEASE_7	The version recognized by the Java Platform, Standard Edition 7.
RELEASE_8	The version recognized by the Java Platform, Standard Edition 8.
RELEASE_9	The version recognized by the Java Platform, Standard Edition 9.

Method Summary

Modifier and Type	Method	Description
static boolean	isIdentifier(CharSequence name)	Returns whether or not name is a syntactically valid identifier (simple name) or keyword in the latest source version.
static boolean	isKeyword(CharSequence s)	Returns whether or not s is a keyword, boolean literal, or null literal in the latest source version.
static boolean	isKeyword(CharSequence s, SourceVersion version)	Returns whether or not s is a keyword, boolean literal, or null literal in the given source version.
static boolean	isName(CharSequence name)	Returns whether or not name is a syntactically valid qualified name in the latest source version.
static boolean	isName(CharSequence name, SourceVersion version)	Returns whether or not name is a syntactically valid qualified name in the given source version.
static SourceVersion	latest()	Returns the latest source version that can be modeled.
static SourceVersion	latestSupported()	Returns the latest source version fully supported by the current execution environment.
static SourceVersion	valueOf(String name)	Returns the enum constant of this type with the specified name.
static SourceVersion[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods declared in class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods declared in class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

RELEASE_0

public static final SourceVersion RELEASE_0

The original version. The language described in The Java™ Language Specification, First Edition.

RELEASE_1

public static final SourceVersion RELEASE_1

The version recognized by the Java Platform 1.1. The language is RELEASE_0 augmented with nested classes as described in the 1.1 update to The Java™ Language Specification, First Edition.

RELEASE_2

public static final SourceVersion RELEASE_2

The version recognized by the Java 2 Platform, Standard Edition, v 1.2. The language described in The Java™ Language Specification, Second Edition, which includes the strictfp modifier.

RELEASE_3

public static final SourceVersion RELEASE_3

The version recognized by the Java 2 Platform, Standard Edition, v 1.3. No major changes from RELEASE_2.

RELEASE_4

public static final SourceVersion RELEASE_4

The version recognized by the Java 2 Platform, Standard Edition, v 1.4. Added a simple assertion facility.

RELEASE_5

public static final SourceVersion RELEASE_5

The version recognized by the Java 2 Platform, Standard Edition 5.0. The language described in The Java™ Language Specification, Third Edition. First release to support generics, annotations, autoboxing, var-args, enhanced for loop, and hexadecimal floating-point literals.

RELEASE_6

public static final SourceVersion RELEASE_6

The version recognized by the Java Platform, Standard Edition 6. No major changes from RELEASE_5.

RELEASE_7

public static final SourceVersion RELEASE_7

The version recognized by the Java Platform, Standard Edition 7. Additions in this release include, diamond syntax for constructors, try-with-resources, strings in switch, binary literals, and multi-catch.

Since:

1.7

RELEASE_8

public static final SourceVersion RELEASE_8

The version recognized by the Java Platform, Standard Edition 8. Additions in this release include lambda expressions and default methods.

Since:

1.8

RELEASE_9

public static final SourceVersion RELEASE_9

The version recognized by the Java Platform, Standard Edition 9. Additions in this release include modules and removal of a single underscore from the set of legal identifier names.

Since:

9

RELEASE_10

public static final SourceVersion RELEASE_10

The version recognized by the Java Platform, Standard Edition 10. Additions in this release include local-variable type inference (var).

Since:

10

RELEASE_11

public static final SourceVersion RELEASE_11

The version recognized by the Java Platform, Standard Edition 11. Additions in this release include local-variable syntax for lambda parameters.

Since:

11

RELEASE_12

public static final SourceVersion RELEASE_12

The version recognized by the Java Platform, Standard Edition 12.

Since:

12

RELEASE_13

public static final SourceVersion RELEASE_13

The version recognized by the Java Platform, Standard Edition 13.

Since:

13

Method Details

values

public static SourceVersion[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static SourceVersion valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

latest

public static SourceVersion latest()

Returns the latest source version that can be modeled.

Returns:

the latest source version that can be modeled

latestSupported

public static SourceVersion latestSupported()

Returns the latest source version fully supported by the current execution environment. RELEASE_9 or later must be returned.

API Note:

This method is included alongside latest() to allow identification of situations where the language model API is running on a platform version different than the latest version modeled by the API. One way that sort of situation can occur is if an IDE or similar tool is using the API to model source version N while running on platform version (N - 1). Running in this configuration is supported by the API. Running an API on platform versions earlier than (N - 1) or later than N may or may not work as an implementation detail. If an annotation processor was generating code to run under the current execution environment, the processor should only use platform features up to the latestSupported release, which may be earlier than the latest release.

Returns:

the latest source version that is fully supported

isIdentifier

public static boolean isIdentifier(CharSequence name)

Returns whether or not name is a syntactically valid identifier (simple name) or keyword in the latest source version. The method returns true if the name consists of an initial character for which Character.isJavaIdentifierStart(int) returns true, followed only by characters for which Character.isJavaIdentifierPart(int) returns true. This pattern matches regular identifiers, keywords, restricted keywords, restricted identifiers and the literals "true", "false", "null". The method returns false for all other strings.

Parameters:

name - the string to check

Returns:

true if this string is a syntactically valid identifier or keyword, false otherwise.

isName

public static boolean isName(CharSequence name)

Returns whether or not name is a syntactically valid qualified name in the latest source version. Unlike isIdentifier, this method returns false for keywords, boolean literals, and the null literal. This method returns true for restricted keywords and restricted identifiers

Parameters:

name - the string to check

Returns:

true if this string is a syntactically valid name, false otherwise.

See Java Language Specification:

3.9 Keywords
6.2 Names and Identifiers

isName

public static boolean isName(CharSequence name, SourceVersion version)

Returns whether or not name is a syntactically valid qualified name in the given source version. Unlike isIdentifier, this method returns false for keywords, boolean literals, and the null literal. This method returns true for restricted keywords and restricted identifiers

Parameters:

name - the string to check

version - the version to use

Returns:

true if this string is a syntactically valid name, false otherwise.

See Java Language Specification:

3.9 Keywords
6.2 Names and Identifiers

Since:

9

isKeyword

public static boolean isKeyword(CharSequence s)

Returns whether or not s is a keyword, boolean literal, or null literal in the latest source version. This method returns false for restricted keywords and restricted identifiers.

Parameters:

s - the string to check

Returns:

true if s is a keyword, or boolean literal, or null literal, false otherwise.

See Java Language Specification:

3.9 Keywords
3.10.3 Boolean Literals
3.10.7 The Null Literal

isKeyword

public static boolean isKeyword(CharSequence s, SourceVersion version)

Returns whether or not s is a keyword, boolean literal, or null literal in the given source version. This method returns false for restricted keywords and restricted identifiers.

Parameters:

s - the string to check

version - the version to use

Returns:

true if s is a keyword, or boolean literal, or null literal, false otherwise.

See Java Language Specification:

3.9 Keywords
3.10.3 Boolean Literals
3.10.7 The Null Literal

Since:

9