Jar file built for jre 6. What happens if i migrate to jre 8?


I have around 20-30 jar files which are built for jre 1.6. Now, i need to migrate to 1.8. Should i built those jar files for jdk 1.8? Or can those still run after this jre upgrade without an issue?

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Yes that should be completely fine.  The Java folks work hard to ensure backwards compatibility so running a Java 1.6 JAR on a Java 1.8 runtime should be fine without rebuilding anything.

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