This warning means that you are compiling your source code using a Java 17 version, but the target distribution is set to a version lower than Java 17. Compatibility issues may result when the source code uses new language features or libraries and the target distribution has lower settings.
To resolve this warning, you can do one of the following:
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Set the target distribution to be the same as the source distribution: In the compile command or build tool configuration, set the target distribution to be the same Java version as the source code was compiled with. For example, for Java 17, you can set the target distribution using the following command:
javac --release 17 YourSourceFile.java
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Or set the target release to 17 in the Maven or Gradle build configuration.
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Downgrade the source distribution: If your project does not require Java 17 features or libraries, you can downgrade the source distribution to the same or lower version than the target distribution. This can avoid the higher version features used in the source code being incompatible with the target version.
In the javac command, you can specify the source distribution using the
-sourceparameter, for example:
javac -source 16 -target 16 YourSourceFile.java
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In the build tools, you can set the corresponding source code version.
Note that if you choose to set the target distribution to a lower version than the source distribution, you need to ensure that the source code does not use features or libraries that are higher than the target version to avoid compatibility issues in the target environment.
Choose the appropriate Java version and distribution settings based on your project needs and target environment. Ensure compatibility between source code and target environment