程序包 javax.lang.model

枚举 SourceVersion

java.lang.Object

java.lang.Enum<SourceVersion>

javax.lang.model.SourceVersion

所有已实现的接口:

Serializable, Comparable<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.

从以下版本开始:

1.6

枚举常量概要

枚举常量

枚举常量	说明
RELEASE_0	The original version.
RELEASE_1	The version recognized by the Java Platform 1.1.
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.

方法概要

限定符和类型	方法	说明
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 or literal in the latest source version.
static boolean	isName(CharSequence name)	Returns whether or not name is a syntactically valid qualified name in the latest 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)	返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)
static SourceVersion[]	values()	按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示: for (SourceVersion c : SourceVersion.values()) System.out.println(c);

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

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.

从以下版本开始:

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.

从以下版本开始:

1.8

方法详细资料

values

public static SourceVersion[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

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

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static SourceVersion valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值

latest

public static SourceVersion latest()

Returns the latest source version that can be modeled.

返回:

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.

返回:

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.

参数:

name - the string to check

返回:

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.

参数:

name - the string to check

返回:

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.

参数:

s - the string to check

返回:

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