# Class GeneratedMessageLite.Builder<MessageType,BuilderType> (3.19.4) public abstract static class GeneratedMessageLite.Builder extends AbstractMessageLite.Builder ## Inheritance [java.lang.Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \> [AbstractMessageLite.Builder](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder) \> GeneratedMessageLite.Builder\ ## Inherited Members [AbstractMessageLite.Builder.\addAll(Iterable\,Collection\)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder__T_addAll_java_lang_Iterable_T__java_util_Collection___super_T__) [AbstractMessageLite.Builder.\addAll(Iterable\,List\)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder__T_addAll_java_lang_Iterable_T__java_util_List___super_T__) [AbstractMessageLite.Builder.clone()](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_clone__) [AbstractMessageLite.Builder.internalMergeFrom(MessageType)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_internalMergeFrom_MessageType_) [AbstractMessageLite.Builder.mergeDelimitedFrom(InputStream)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeDelimitedFrom_java_io_InputStream_) [AbstractMessageLite.Builder.mergeDelimitedFrom(InputStream,ExtensionRegistryLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeDelimitedFrom_java_io_InputStream_com_google_protobuf_ExtensionRegistryLite_) [AbstractMessageLite.Builder.mergeFrom(byte\[\])](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_byte___) [AbstractMessageLite.Builder.mergeFrom(byte\[\],ExtensionRegistryLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_byte___com_google_protobuf_ExtensionRegistryLite_) [AbstractMessageLite.Builder.mergeFrom(byte\[\],int,int)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_byte___int_int_) [AbstractMessageLite.Builder.mergeFrom(byte\[\],int,int,ExtensionRegistryLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_byte___int_int_com_google_protobuf_ExtensionRegistryLite_) [AbstractMessageLite.Builder.mergeFrom(ByteString)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_com_google_protobuf_ByteString_) [AbstractMessageLite.Builder.mergeFrom(ByteString,ExtensionRegistryLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_com_google_protobuf_ByteString_com_google_protobuf_ExtensionRegistryLite_) [AbstractMessageLite.Builder.mergeFrom(CodedInputStream)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_com_google_protobuf_CodedInputStream_) [AbstractMessageLite.Builder.mergeFrom(CodedInputStream,ExtensionRegistryLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_com_google_protobuf_CodedInputStream_com_google_protobuf_ExtensionRegistryLite_) [AbstractMessageLite.Builder.mergeFrom(MessageLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_com_google_protobuf_MessageLite_) [AbstractMessageLite.Builder.mergeFrom(InputStream)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_java_io_InputStream_) [AbstractMessageLite.Builder.mergeFrom(InputStream,ExtensionRegistryLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_java_io_InputStream_com_google_protobuf_ExtensionRegistryLite_) [AbstractMessageLite.Builder.newUninitializedMessageException(MessageLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_newUninitializedMessageException_com_google_protobuf_MessageLite_) [Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-) [Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) [Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) [Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--) [Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) [Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) [Object.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) [Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) [Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) [Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-) | ## Type Parameters || |---|---| | **Name** | **Description** | | `MessageType` | | | `BuilderType` | | ## Constructors ### Builder(MessageType defaultInstance) protected Builder(MessageType defaultInstance) | **Parameter** || |---|---| | **Name** | **Description** | | `defaultInstance` | `MessageType` | ## Fields ### instance protected MessageType instance | **Field Value** || |---|---| | **Type** | **Description** | | `MessageType` | | ### isBuilt protected boolean isBuilt | **Field Value** || |---|---| | **Type** | **Description** | | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | | ## Methods ### build() public final MessageType build() | **Returns** || |---|---| | **Type** | **Description** | | `MessageType` | | ### buildPartial() public MessageType buildPartial() | **Returns** || |---|---| | **Type** | **Description** | | `MessageType` | | ### clear() public final BuilderType clear() | **Returns** || |---|---| | **Type** | **Description** | | `BuilderType` | | ### clone() public BuilderType clone() Clones the Builder. | **Returns** || |---|---| | **Type** | **Description** | | `BuilderType` | | **Overrides** [AbstractMessageLite.Builder\.clone()](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_clone__) ### copyOnWrite() protected final void copyOnWrite() Called before any method that would mutate the builder to ensure that it correctly copies any state before the write happens to preserve immutability guarantees. ### copyOnWriteInternal() protected void copyOnWriteInternal() ### getDefaultInstanceForType() public MessageType getDefaultInstanceForType() | **Returns** || |---|---| | **Type** | **Description** | | `MessageType` | | ### internalMergeFrom(MessageType message) protected BuilderType internalMergeFrom(MessageType message) | **Parameter** || |---|---| | **Name** | **Description** | | `message` | `MessageType` | | **Returns** || |---|---| | **Type** | **Description** | | `BuilderType` | | **Overrides** [AbstractMessageLite.Builder\.internalMergeFrom(MessageType message)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_internalMergeFrom_MessageType_) ### isInitialized() public final boolean isInitialized() | **Returns** || |---|---| | **Type** | **Description** | | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | | ### mergeFrom(MessageType message) public BuilderType mergeFrom(MessageType message) All subclasses implement this. | **Parameter** || |---|---| | **Name** | **Description** | | `message` | `MessageType` | | **Returns** || |---|---| | **Type** | **Description** | | `BuilderType` | | ### mergeFrom(byte\[\] input, int offset, int length) public BuilderType mergeFrom(byte[] input, int offset, int length) Parse `data` as a message of this type and merge it with the message being built. This is just a small wrapper around #mergeFrom(CodedInputStream). | **Parameters** || |---|---| | **Name** | **Description** | | `input` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html[]` | | `offset` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | | `length` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | | **Returns** || |---|---| | **Type** | **Description** | | `BuilderType` | | **Overrides** [AbstractMessageLite.Builder\.mergeFrom(byte\[\] data, int off, int len)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_byte___int_int_) | **Exceptions** || |---|---| | **Type** | **Description** | | `https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException` | | ### mergeFrom(byte\[\] input, int offset, int length, ExtensionRegistryLite extensionRegistry) public BuilderType mergeFrom(byte[] input, int offset, int length, ExtensionRegistryLite extensionRegistry) Parse `data` as a message of this type and merge it with the message being built. This is just a small wrapper around [#mergeFrom(CodedInputStream,ExtensionRegistryLite)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.GeneratedMessageLite.Builder#com_google_protobuf_GeneratedMessageLite_Builder_mergeFrom_com_google_protobuf_CodedInputStream_com_google_protobuf_ExtensionRegistryLite_). | **Parameters** || |---|---| | **Name** | **Description** | | `input` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html[]` | | `offset` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | | `length` | `https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html` | | `extensionRegistry` | `https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite` | | **Returns** || |---|---| | **Type** | **Description** | | `BuilderType` | | **Overrides** [AbstractMessageLite.Builder\.mergeFrom(byte\[\] data, int off, int len, ExtensionRegistryLite extensionRegistry)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_byte___int_int_com_google_protobuf_ExtensionRegistryLite_) | **Exceptions** || |---|---| | **Type** | **Description** | | `https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.InvalidProtocolBufferException` | | ### mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry) public BuilderType mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry) Like Builder#mergeFrom(CodedInputStream), but also parses extensions. The extensions that you want to be able to parse must be registered in `extensionRegistry`. Extensions not in the registry will be treated as unknown fields. | **Parameters** || |---|---| | **Name** | **Description** | | `input` | `https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.CodedInputStream` | | `extensionRegistry` | `https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.ExtensionRegistryLite` | | **Returns** || |---|---| | **Type** | **Description** | | `BuilderType` | | **Overrides** [AbstractMessageLite.Builder\.mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)](https://docs.cloud.google.com/java/docs/reference/protobuf/latest/com.google.protobuf.AbstractMessageLite.Builder#com_google_protobuf_AbstractMessageLite_Builder_mergeFrom_com_google_protobuf_CodedInputStream_com_google_protobuf_ExtensionRegistryLite_) | **Exceptions** || |---|---| | **Type** | **Description** | | `https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html` | |