Enum SourceVersion

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.

Enum Constants

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

Methods

values

public static SourceVersion[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (SourceVersion c : SourceVersion.values())
    System.out.println(c);

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_5 or later must be returned.

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, and the literals "true", "false", and "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 and literals.

Parameters:

name - the string to check

Returns:

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

isKeyword

public static boolean isKeyword(CharSequence s)

Returns whether or not s is a keyword or literal in the latest source version.

Parameters:

s - the string to check

Returns:

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