Code to reproduce unexpected behavior

HashcodeTest.java

import java.util.Arrays;

public class HashcodeTest {
    /**
     * A simple Record with an int array.
     */
    record Record(int[] array) {}

    /**
     * {@code Record#hashCode()} invokes not {@link Arrays#hashCode(int[])} but {@code int[].hashCode()}.
     */
    private static void testHashCode() {
        int[] array = new int[]{ 1, 2, 3 };

        System.out.printf("Record#hashCode: %d%n", new Record(array).hashCode());
        System.out.printf("int[].hashCode: %d%n", array.hashCode());
        System.out.printf("Arrays.hashCode: %d%n", Arrays.hashCode(array));

        array[0] = 0;
        System.out.println("== after int array change ==");
        System.out.printf("Record#hashCode: %d%n", new Record(array).hashCode());
        System.out.printf("int[].hashCode: %d%n", array.hashCode());
        System.out.printf("Arrays.hashCode: %d%n", Arrays.hashCode(array));
    }

    /**
     * If each record instance has an empty array, the result of {@code Record#equals()} is expected to be {@code true}.
     * But actually prints {@code false} because {@code Record#equals()} invokes not {@link Arrays#equals(int[], int[])} but {@code int[].equals(Object)}..
     */
    private static void testEquals() {
        System.out.println(new Record(new int[0]).equals(new Record(new int[0])));
    }

    public static void main(String[] args) {
        testHashCode();
        testEquals();
    }
}