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.
public static final SourceVersion RELEASE_0
The original version. The language described in The Java™ Language Specification, First Edition.
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.
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.
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
.
public static final SourceVersion RELEASE_4
The version recognized by the Java 2 Platform, Standard Edition, v 1.4. Added a simple assertion facility.
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.
public static final SourceVersion RELEASE_6
The version recognized by the Java Platform, Standard Edition 6. No major changes from RELEASE_5
.
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.
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.
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);
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.)
name
- the name of the enum constant to be returned.IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is nullpublic static SourceVersion latest()
Returns the latest source version that can be modeled.
public static SourceVersion latestSupported()
Returns the latest source version fully supported by the current execution environment. RELEASE_5
or later must be returned.
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.
name
- the string to checktrue
if this string is a syntactically valid identifier or keyword, false
otherwise.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.
name
- the string to checktrue
if this string is a syntactically valid name, false
otherwise.public static boolean isKeyword(CharSequence s)
Returns whether or not s
is a keyword or literal in the latest source version.
s
- the string to checktrue
if s
is a keyword or literal, false
otherwise.
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