javademos/lanes/src/MockitoProbe.java

import org.mockito.Mockito;

/**
 * Creates one mock and stubs one call: the smallest thing that makes Mockito ask ByteBuddy to read and write class files.
 * Run by scripts/upgrade.sh against two Mockito versions on JDK 21 and 25. Explained in docs/15-build-files.md.
 */
public class MockitoProbe {
    interface Greeter { String greet(String name); }

    public static void main(String[] args) {
        Greeter g = Mockito.mock(Greeter.class);
        Mockito.when(g.greet("x")).thenReturn("hi");
        System.out.println("mock says " + g.greet("x"));
    }
}