javademos/lanes/src/JniWarning.java

/**
 * "JNI warnings on stderr by default": JEP 472 (Java 24). Loading a native library is a restricted operation.
 * The library is the JDK's own libnet, so no compiler or extra file is needed. Run with and without
 * --enable-native-access=ALL-UNNAMED by scripts/lanes.sh.
 * Chapter: docs/14-lanes-21-to-25.md
 */
public class JniWarning {
    public static void main(String[] args) {
        System.out.println("java.version = " + System.getProperty("java.version"));
        System.loadLibrary("net");
        System.out.println("System.loadLibrary(\"net\") returned");
    }
}