Oracle designated as a "Critical Patch Update" released in January 2018. Crucially, this was one of the last publicly available updates for commercial use before Oracle changed the rules. After January 2019, using later versions of Oracle JDK in production required a paid subscription. This turned files like jdk-8u161 into highly sought-after artifacts—the last "safe" and "free" versions developers could use without worrying about Oracle lawyers knocking on their door.
The file represents a specific, historically significant update of the Java Development Kit (JDK) 8 released by Oracle Corporation for 64-bit Windows operating systems . As the foundational technology for millions of applications, understanding why a particular version like update 161 (8u161) is requested—and how to properly install it—is crucial for developers and system administrators.
Java SE 8 Archive Downloads (JDK 8u202 and earlier) - Oracle jdk-8u161-windows-x64.exe
setx JAVA_HOME "C:\Program Files\Java\jdk1.8.0_161" /M setx PATH "%JAVA_HOME%\bin;%PATH%" /M
Installing this version is straightforward, but it requires two distinct steps during the setup process: Oracle designated as a "Critical Patch Update" released
Notably, while 8u161 introduced the TLS extended master secret extension, later versions 8u162 and 8u172 introduced a regression where in the Sun JSSE provider. The issue was present in 8u162, 8u172, and Java 10.0.1. For applications heavily reliant on TLS session resumption, 8u161 may actually be more stable than the immediate subsequent updates. However, this regression was eventually fixed in later releases.
| Criteria | Score (1–10) | |----------|--------------| | Security | 2/10 | | Performance | 6/10 | | Compatibility (modern) | 2/10 | | Compatibility (legacy) | 9/10 | | Ease of install | 7/10 | | Documentation | 8/10 (archived) | This turned files like jdk-8u161 into highly sought-after
Installs developer tools (javac, debugger) typically to C:\Program Files\Java\jdk1.8.0_161 .
Installs the runtime environment to C:\Program Files\Java\jre1.8.0_161 . 2. Post-Installation Configuration
: After installation, you often need to manually set the JAVA_HOME system variable to the installation path (usually C:\Program Files\Java\jdk1.8.0_161 ) and update your Path variable to include the \bin folder . Availability