有没有办法显示 jvm 支持的 major.minor class 版本范围？
Is there a way to show the range of major.minor class versions supported by a jvm?
java命令可以打印它支持的class版本范围吗？
或者在网上某处是否有每个 jvm 版本的此信息列表？
支持的 class 文件版本的要求在 JVM specification §4.1:
中描述
+---------+-----------------------------+--------------------------+
| Java SE | Corresponding major version | Supported major versions |
+---------+-----------------------------+--------------------------+
| 1.0.2 | 45 | 45 |
| 1.1 | 45 | 45 |
| 1.2 | 46 | 45 .. 46 |
| 1.3 | 47 | 45 .. 47 |
| 1.4 | 48 | 45 .. 48 |
| 5.0 | 49 | 45 .. 49 |
| 6 | 50 | 45 .. 50 |
| 7 | 51 | 45 .. 51 |
| 8 | 52 | 45 .. 52 |
| 9 | 53 | 45 .. 53 |
| 10 | 54 | 45 .. 54 |
| 11 | 55 | 45 .. 55 |
| 12 | 56 | 45 .. 56 |
| 13 | 57 | 45 .. 57 |
+---------+-----------------------------+--------------------------+
For a class file whose major_version is 56 or above, the minor_version
must be 0 or 65535.
For a class file whose major_version is between 45 and 55 inclusive,
the minor_version may be any value.
A historical perspective is warranted on JDK support for class file
format versions. JDK 1.0.2 supported versions 45.0 through 45.3
inclusive. JDK 1.1 supported versions 45.0 through 45.65535 inclusive.
When JDK 1.2 introduced support for major version 46, the only minor
version supported under that major version was 0. Later JDKs continued
the practice of introducing support for a new major version (47, 48,
etc) but supporting only a minor version of 0 under the new major
version. Finally, the introduction of preview features in Java SE 12
(see below) motivated a standard role for the minor version of the
class file format, so JDK 12 supported minor versions of 0 and 65535
under major version 56. Subsequent JDKs introduce support for N.0 and
N.65535 where N is the corresponding major version of the implemented
Java SE Platform. For example, JDK 13 supports 57.0 and 57.65535.
java命令可以打印它支持的class版本范围吗？ 或者在网上某处是否有每个 jvm 版本的此信息列表？
支持的 class 文件版本的要求在 JVM specification §4.1:
中描述+---------+-----------------------------+--------------------------+
| Java SE | Corresponding major version | Supported major versions |
+---------+-----------------------------+--------------------------+
| 1.0.2 | 45 | 45 |
| 1.1 | 45 | 45 |
| 1.2 | 46 | 45 .. 46 |
| 1.3 | 47 | 45 .. 47 |
| 1.4 | 48 | 45 .. 48 |
| 5.0 | 49 | 45 .. 49 |
| 6 | 50 | 45 .. 50 |
| 7 | 51 | 45 .. 51 |
| 8 | 52 | 45 .. 52 |
| 9 | 53 | 45 .. 53 |
| 10 | 54 | 45 .. 54 |
| 11 | 55 | 45 .. 55 |
| 12 | 56 | 45 .. 56 |
| 13 | 57 | 45 .. 57 |
+---------+-----------------------------+--------------------------+
For a class file whose major_version is 56 or above, the minor_version must be 0 or 65535.
For a class file whose major_version is between 45 and 55 inclusive, the minor_version may be any value.
A historical perspective is warranted on JDK support for class file format versions. JDK 1.0.2 supported versions 45.0 through 45.3 inclusive. JDK 1.1 supported versions 45.0 through 45.65535 inclusive. When JDK 1.2 introduced support for major version 46, the only minor version supported under that major version was 0. Later JDKs continued the practice of introducing support for a new major version (47, 48, etc) but supporting only a minor version of 0 under the new major version. Finally, the introduction of preview features in Java SE 12 (see below) motivated a standard role for the minor version of the class file format, so JDK 12 supported minor versions of 0 and 65535 under major version 56. Subsequent JDKs introduce support for N.0 and N.65535 where N is the corresponding major version of the implemented Java SE Platform. For example, JDK 13 supports 57.0 and 57.65535.