ConditionalOnClass Type — spring-boot Architecture

Source Code

core/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/condition/ConditionalOnClass.java lines 62–86

@Target({ ElementType.TYPE, ElementType.METHOD })
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Conditional(OnClassCondition.class)
public @interface ConditionalOnClass {

	/**
	 * The classes that must be present.
	 * <p>
	 * Since this annotation is parsed by loading class bytecode, it is safe to specify
	 * classes here that may ultimately not be on the classpath, but only if this
	 * annotation is directly on the affected component and <b>not</b> if this annotation
	 * is used as a composed, meta-annotation. In order to use this annotation as a
	 * meta-annotation, only use the {@link #name} attribute.
	 * @return the classes that must be present
	 */
	Class<?>[] value() default {};

	/**
	 * The classes names that must be present.
	 * @return the class names that must be present.
	 */
	String[] name() default {};

}