Returns a list of field paths (e.g. "foo.bar.baz") of required fields which are not set in this
message. You should callMessageLiteOrBuilder#isInitialized()first to check if there
are any missing fields, as that method is likely to be much faster than this one even when the
message is fully-initialized.
Returns a collection of all the fields in this message which are set and their corresponding
values. A singular ("required" or "optional") field is set iff hasField() returns true for that
field. A "repeated" field is set iff getRepeatedFieldCount() is greater than zero. The values
are exactly what would be returned by calling#getField(Descriptors.FieldDescriptor)for each field. The map is guaranteed to be a sorted map, so iterating over it will return
fields in order by field number. If this is for a builder, the returned map may or may not reflect future changes to the
builder. Either way, the returned map is itself unmodifiable.
Get an instance of the type with no fields set. Because no fields are set, all getters for
singular fields will return default values and repeated fields will appear empty. This may or
may not be a singleton. This differs from thegetDefaultInstance()method of generated
message classes in that this method is an abstract method of theMessageLiteinterface
whereasgetDefaultInstance()is a static method of a specific class. They return the
same thing.
Get the message's type's descriptor. This differs from thegetDescriptor()method of
generated message classes in that this method is an abstract method of theMessageinterface whereasgetDescriptor()is a static method of a specific class. They return
the same thing.
Obtains the value of the given field, or the default value if it is not set. For primitive
fields, the boxed primitive value is returned. For enum fields, the EnumValueDescriptor for the
value is returned. For embedded message fields, the sub-message is returned. For repeated
fields, a java.util.List is returned.
Returns a comma-delimited list of required fields which are not set in this message object. You
should callMessageLiteOrBuilder#isInitialized()first to check if there are any
missing fields, as that method is likely to be much faster than this one even when the message
is fully-initialized.
Gets an element of a repeated field. For primitive fields, the boxed primitive value is
returned. For enum fields, the EnumValueDescriptor for the value is returned. For embedded
message fields, the sub-message is returned.
Gets the number of elements of a repeated field. This is exactly equivalent to calling the
generated "Count" accessor method corresponding to the field.
[[["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,["# Interface MessageOrBuilder (3.19.4)\n\n public interface MessageOrBuilder extends MessageLiteOrBuilder\n\nBase interface for methods common to [Message](/java/docs/reference/protobuf/latest/com.google.protobuf.Message) and [Message.Builder](/java/docs/reference/protobuf/latest/com.google.protobuf.Message.Builder) to provide type\nequivalency. \n\nImplements\n----------\n\n[MessageLiteOrBuilder](/java/docs/reference/protobuf/latest/com.google.protobuf.MessageLiteOrBuilder)\n\nMethods\n-------\n\n### findInitializationErrors()\n\n public abstract List\u003cString\u003e findInitializationErrors()\n\nReturns a list of field paths (e.g. \"foo.bar.baz\") of required fields which are not set in this\nmessage. You should call [MessageLiteOrBuilder#isInitialized()](/java/docs/reference/protobuf/latest/com.google.protobuf.MessageLiteOrBuilder#com_google_protobuf_MessageLiteOrBuilder_isInitialized__) first to check if there\nare any missing fields, as that method is likely to be much faster than this one even when the\nmessage is fully-initialized.\n\n### getAllFields()\n\n public abstract Map\u003cDescriptors.FieldDescriptor,Object\u003e getAllFields()\n\nReturns a collection of all the fields in this message which are set and their corresponding\nvalues. A singular (\"required\" or \"optional\") field is set iff hasField() returns true for that\nfield. A \"repeated\" field is set iff getRepeatedFieldCount() is greater than zero. The values\nare exactly what would be returned by calling [#getField(Descriptors.FieldDescriptor)](/java/docs/reference/protobuf/latest/com.google.protobuf.MessageOrBuilder#com_google_protobuf_MessageOrBuilder_getField_com_google_protobuf_Descriptors_FieldDescriptor_)\nfor each field. The map is guaranteed to be a sorted map, so iterating over it will return\nfields in order by field number. \n\nIf this is for a builder, the returned map may or may not reflect future changes to the\nbuilder. Either way, the returned map is itself unmodifiable.\n\n### getDefaultInstanceForType()\n\n public abstract Message getDefaultInstanceForType()\n\nGet an instance of the type with no fields set. Because no fields are set, all getters for\nsingular fields will return default values and repeated fields will appear empty. This may or\nmay not be a singleton. This differs from the `getDefaultInstance()` method of generated\nmessage classes in that this method is an abstract method of the `MessageLite` interface\nwhereas `getDefaultInstance()` is a static method of a specific class. They return the\nsame thing.\n\n### getDescriptorForType()\n\n public abstract Descriptors.Descriptor getDescriptorForType()\n\nGet the message's type's descriptor. This differs from the `getDescriptor()` method of\ngenerated message classes in that this method is an abstract method of the `Message`\ninterface whereas `getDescriptor()` is a static method of a specific class. They return\nthe same thing.\n\n### getField(Descriptors.FieldDescriptor field)\n\n public abstract Object getField(Descriptors.FieldDescriptor field)\n\nObtains the value of the given field, or the default value if it is not set. For primitive\nfields, the boxed primitive value is returned. For enum fields, the EnumValueDescriptor for the\nvalue is returned. For embedded message fields, the sub-message is returned. For repeated\nfields, a java.util.List is returned.\n\n### getInitializationErrorString()\n\n public abstract String getInitializationErrorString()\n\nReturns a comma-delimited list of required fields which are not set in this message object. You\nshould call [MessageLiteOrBuilder#isInitialized()](/java/docs/reference/protobuf/latest/com.google.protobuf.MessageLiteOrBuilder#com_google_protobuf_MessageLiteOrBuilder_isInitialized__) first to check if there are any\nmissing fields, as that method is likely to be much faster than this one even when the message\nis fully-initialized.\n\n### getOneofFieldDescriptor(Descriptors.OneofDescriptor oneof)\n\n public abstract Descriptors.FieldDescriptor getOneofFieldDescriptor(Descriptors.OneofDescriptor oneof)\n\nObtains the FieldDescriptor if the given oneof is set. Returns null if no field is set.\n\n### getRepeatedField(Descriptors.FieldDescriptor field, int index)\n\n public abstract Object getRepeatedField(Descriptors.FieldDescriptor field, int index)\n\nGets an element of a repeated field. For primitive fields, the boxed primitive value is\nreturned. For enum fields, the EnumValueDescriptor for the value is returned. For embedded\nmessage fields, the sub-message is returned.\n\n### getRepeatedFieldCount(Descriptors.FieldDescriptor field)\n\n public abstract int getRepeatedFieldCount(Descriptors.FieldDescriptor field)\n\nGets the number of elements of a repeated field. This is exactly equivalent to calling the\ngenerated \"Count\" accessor method corresponding to the field.\n\n### getUnknownFields()\n\n public abstract UnknownFieldSet getUnknownFields()\n\nGet the [UnknownFieldSet](/java/docs/reference/protobuf/latest/com.google.protobuf.UnknownFieldSet) for this message.\n\n### hasField(Descriptors.FieldDescriptor field)\n\n public abstract boolean hasField(Descriptors.FieldDescriptor field)\n\nReturns true if the given field is set. This is exactly equivalent to calling the generated\n\"has\" accessor method corresponding to the field.\n\n### hasOneof(Descriptors.OneofDescriptor oneof)\n\n public abstract boolean hasOneof(Descriptors.OneofDescriptor oneof)\n\nReturns true if the given oneof is set."]]
