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); } }