java-testing-lab/junit-6-migration/src/compat/FixedApis.java

import org.junit.jupiter.api.MethodOrderer;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestMethodOrder;
import org.junit.platform.commons.support.ReflectionSupport;

/** The replacements for OldApis. This compiles on 5.14.4 and on 6.1.3, so make these changes before you upgrade. */
@TestMethodOrder(MethodOrderer.MethodName.class)
class FixedApis {

    @Test
    void usesTheReplacements() {
        Object loaded = ReflectionSupport.tryToLoadClass("java.lang.String").toOptional().orElseThrow();
        System.out.println(loaded);
    }
}