Java Module java.compiler Package javax.lang.model Enum SourceVersion（JDK11）

Enum Constant Detail

• 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.

  Since:

  11

Method Detail

• 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, restricted keywords, and the literals "true", "false", "null", and "var". 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 "var".

  Parameters:

  name - the string to check

  Returns:

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

  See The 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 "var".

  Parameters:

  name - the string to check

  version - the version to use

  Returns:

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

  Since:

  9

  See The Java™ Language Specification:

  3.9 Keywords, 6.2 Names and Identifiers

• 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 "var".

  Parameters:

  s - the string to check

  Returns:

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

  See The 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 "var".

  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.

  Since:

  9

  See The Java™ Language Specification:

  3.9 Keywords, 3.10.3 Boolean Literals, 3.10.7 The Null Literal