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Can I make a .jar file compatible with older java versions

I get this error:

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due to my java version. I would like to create a .jar file compatible with older versions of Java, as well as newer versions. My computer is not a problem, but my audience uses older versions of Java. How can I make my program compatible with old versions as well as new versions and how far should I go with it?

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5 answers

You can go back and compile your sources and create a new jar file with an older javac compatible with a specific version of java.

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, , java .

, : Java ant javac

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UnsupportedClassVersionError JAR (JAR - zip-), JAR.

.class Java ByteCode, JVM ( Java) . Bytecode (Java 1991 .) , , , , JRE.

TL;DR: , , JRE. . JRE , , .

. .class J2SE 1.8, JRE7. JRE 1.8.

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, Java, JDK . JVM, , /, JRE, JDK .

JRE, JRE. , JRE , , .

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IDE NetBeans.

Run → Install project configuration → Configure → In the left pane, select "Sources". Finally, select the minimum version of the JDK in source / binary format.

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Source: https://habr.com/ru/post/1539470/

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