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Chapter 2. Eclipse Temurin bug fixes and deprecations
Eclipse Temurin does not contain structural changes from the upstream distribution of OpenJDK.
2.1. Eclipse Temurin bug fixes
Eclipse Temurin 25.0.1 includes the following bug fix.
Fix for issue caused by changing type of java.time month and day fields to byte
In the initial release of OpenJDK 25, when attempting to read serialized Class objects that were created in earlier OpenJDK versions for some of the java.time classes, a failure occurred with an InvalidClassException. Similarly, java.time Class objects that were serialized with OpenJDK 25 could not be read by older OpenJDK versions.
This issue was introduced in the initial release of OpenJDK 25, which changed the month and day fields in java.time classes to the byte type.
This incompatibility occurred specifically with the Class object rather than instances of the object. For example, writeObject(LocalDate.class) methods produced incompatible serialized data, but writeObject(LocalDate.now()) methods did not produce this incompatibility.
OpenJDK 25.0.2 resolves this issue by reverting to the earlier behavior that was available before the introduction of OpenJDK 25. This fix also helps to restore compatibility between OpenJDK 25 and older versions.
2.2. Eclipse Temurin deprecated features
The following pre-existing feature has been removed in Eclipse Temurin 25.0.1.
AffirmTrust root CA certificates removed
From OpenJDK 25.0.1 onward, the cacerts truststore no longer includes the following AffirmTrust root certificates:
- Certificate 1
- Alias name: affirmtrustcommercialca [jdk]
- Distinguished name: CN=AffirmTrust Commercial, O=AffirmTrust, C=US
- SHA256: 03:76:AB:1D:54:C5:F9:80:3C:E4:B2:E2:01:A0:EE:7E:EF:7B:57:B6:36:E8:A9:3C:9B:8D:48:60:C9:6F:5F:A7
- Certificate 2
- Alias name: affirmtrustnetworkingca [jdk]
- Distinguished name: CN=AffirmTrust Networking, O=AffirmTrust, C=US
- SHA256: 0A:81:EC:5A:92:97:77:F1:45:90:4A:F3:8D:5D:50:9F:66:B5:E2:C5:8F:CD:B5:31:05:8B:0E:17:F3:F0B4:1B
- Certificate 3
- Alias name: affirmtrustpremiumca [jdk]
- Distinguished name: CN=AffirmTrust Premium, O=AffirmTrust, C=US
- SHA256: 70:A7:3F:7F:37:6B:60:07:42:48:90:45:34:B1:14:82:D5:BF:0E:69:8E:CC:49:8D:F5:25:77:EB:F2:E9:3B:9A
- Certificate 4
- Alias name: affirmtrustpremiumeccca [jdk]
- Distinguished name: CN=AffirmTrust Premium ECC, O=AffirmTrust, C=US
- SHA256: BD:71:FD:F6:DA:97:E4:CF:62:D1:64:7A:DD:25:81:B0:7D:79:AD:F8:39:7E:B4:EC:BA:9C:5E:84:88:82:14:23
See JDK-8361212 (JDK Bug System).
Revised on 2026-02-06 15:02:03 UTC
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