[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Enum Field.Cardinality (3.19.4)\n\n public enum Field.Cardinality extends Enum\u003cField.Cardinality\u003e implements Internal.EnumLite\n\nWhether a field is optional, required, or repeated.\n\nProtobuf enum `google.protobuf.Field.Cardinality` \n\nImplements\n----------\n\n[Internal.EnumLite](/java/docs/reference/protobuf/latest/com.google.protobuf.Internal.EnumLite) \n\nInherited Members\n-----------------\n\n[Enum.\\\u003cT\\\u003evalueOf(Class\\\u003cT\\\u003e,String)](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#valueOf-java.lang.Class-java.lang.String-) \n[Enum.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#clone--) \n[Enum.compareTo(E)](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#compareTo-E-) \n[Enum.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#equals-java.lang.Object-) \n[Enum.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#finalize--) \n[Enum.getDeclaringClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#getDeclaringClass--) \n[Enum.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#hashCode--) \n[Enum.name()](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#name--) \n[Enum.ordinal()](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#ordinal--) \n[Enum.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html#toString--) \n[Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) \n[Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) \n[Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) \n[Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) \n[Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) \n[Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)"]]
