JUnit 5 represents a significant evolution in Java testing frameworks, offering enhanced capabilities over its predecessor, JUnit 4. One of its notable features is the ability to disable tests using the @Disabled annotation, which can be applied to individual test methods or entire classes. Moreover, JUnit 5 introduces conditional disabling, allowing tests to be skipped based on criteria such as operating system, Java Runtime Environment (JRE) versions, system properties, or environment variables. This conditional approach is particularly useful when working on specific features, avoiding unnecessary test executions that do not pertain to the current focus, or when certain conditions—like OS dependencies or runtime environments—are not met. JUnit 5 also supports disabling tests based on custom user-defined conditions and within GraalVM native images. The framework provides flexibility and efficiency in managing large test suites, ensuring tests are run under appropriate conditions, thus saving time and resources.