Warning: [Options] Bootstrap Class Path Not Set in Conjunction with -Source 8

My JDK8 NetBeans project has the following warning. warning: [options] bootstrap class path not set in conjunction with -source 8 However, my code is building successfully! Can someone help with why this issue is happening?

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1 Answer

also note Ant javac task now supports this option.

"release Specify the value for the --release switch. When set and running on JDK 9+ the source and target attributes as well as the bootclasspath will be ignored. Since Ant 1.9.8. Required? No, ignored when running on JDK 8 or earlier"

For example, can replace source="1.8" and target="1.8" entries with a single release="8" entry. Note that release attribute has different values (no prefix "1." used).

Note also that this will fail if Ant 1.9 (or better) isn't available.

This can't be used in IDE-provided build files in the nbproject subdirectory, where build files have an explicit warning not to be edited.

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Sophia Al-Mansoor

Sophia Al-Mansoor

Global Business & E-Commerce Reporter

Sophia analyzes international trade, startup ecosystems, retail transformation, and supply chain logistics for modern digital publications.

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