Package org.stellar.sdk

package org.stellar.sdk

Core classes for the Java Stellar SDK.

This package contains the primary entry points and foundational types for interacting with the Stellar network:

• Server — client for the Horizon API (accounts, transactions, payments, effects, offers, order books, etc.)
• SorobanServer — client for Stellar RPC (formerly Soroban-RPC), used for smart contract interaction, transaction simulation, and submission
• Transaction and TransactionBuilder — building, signing, and encoding Stellar transactions
• FeeBumpTransaction — wrapping an inner transaction with a higher fee
• KeyPair — Ed25519 key management (signing and verification)
• Asset, AssetTypeNative, AssetTypeCreditAlphaNum4, AssetTypeCreditAlphaNum12 — Stellar asset representations
• Memo — transaction memo types (none, text, id, hash, return hash)
• Network — network passphrase constants (public, testnet)
• Address — Stellar account or contract address abstraction

Related packages:

• org.stellar.sdk.operations — Stellar operation types
• org.stellar.sdk.requests — Horizon request builders
• org.stellar.sdk.responses — Horizon response models
• org.stellar.sdk.contract — smart contract interaction
• org.stellar.sdk.exception — SDK exception hierarchy

See Also:

• Stellar APIs overview

Related Packages

Package	Description
org.stellar.sdk.contract	Provides classes for easy interaction with Stellar smart contracts.
org.stellar.sdk.exception	Exceptions that can be thrown by the Stellar SDK.
org.stellar.sdk.federation	Provides support for the Stellar federation protocol.
org.stellar.sdk.operations	Provides classes representing the Stellar network operations.
org.stellar.sdk.requests	Provides request builder classes for the Horizon API.
org.stellar.sdk.responses	Provides response model classes for the Horizon API.
org.stellar.sdk.scval	Scv provides a range of methods to help you build and parse SCVal more conveniently.
org.stellar.sdk.spi	Service Provider Interface (SPI) for platform-specific SDK implementations.
org.stellar.sdk.xdr	Contains classes for working with XDR data.

Class	Description
AbstractTransaction	Abstract class for transaction classes.
Account	Represents an account in Stellar network with its sequence number.
AccountFlag	AccountFlag is the enum that can be used in SetOptionsOperation.
Address	Represents a single address in the Stellar network.
Address.AddressType	Represents the type of the address.
Asset	Base Asset class.
AssetTypeCreditAlphaNum	Base class for AssetTypeCreditAlphaNum4 and AssetTypeCreditAlphaNum12 subclasses.
AssetTypeCreditAlphaNum12	Represents all assets with codes 5-12 characters long.
AssetTypeCreditAlphaNum4	Represents all assets with codes 1-4 characters long.
AssetTypeNative	Represents Stellar native asset - Lumens (XLM)
Auth	This class contains helper methods to sign SorobanAuthorizationEntry.
Auth.Signature	A signature, consisting of a public key and a signature.
Auth.Signer	An interface for signing a HashIDPreimage to produce a signature.
Base32	Base32 interface used by the SDK to encode and decode strings and bytes.
Base64	Base64 interface used by the SDK to encode and decode strings and bytes.
Base64Factory	Factory class used to create Base64 instances.
ChangeTrustAsset	Represents an asset in a change trust operation on the Stellar network.
Claimant	Represents an entity who is eligible to claim the claimable balance.
FeeBumpTransaction	Represents Fee Bump Transaction in Stellar network.
KeyPair	Holds a Stellar keypair.
LedgerBounds	LedgerBounds are Preconditions of a transaction per CAP-21
LiquidityPool	Represents a LiquidityPoolParameters object on the Stellar network.
Memo	The memo contains optional extra information.
MemoHash	Represents MEMO_HASH.
MemoId	Represents MEMO_ID.
MemoNone	Represents MEMO_NONE.
MemoReturnHash	Represents MEMO_RETURN.
MemoText	Represents MEMO_TEXT.
MuxedAccount	Represents a multiplexed account on Stellar's network.
Network	Network class is used to specify which Stellar network you want to use.
Predicate	Base class for predicates.
Predicate.AbsBefore	Represents a predicate based on a maximum absolute timestamp.
Predicate.And	Represents a logical AND of two predicates.
Predicate.Not	Represents a logical NOT of a predicate.
Predicate.Or	Represents a logical OR of two predicates.
Predicate.RelBefore	Represents a predicate based on a relative time offset from the close time of the ledger in which the CreateClaimableBalanceOperation is included.
Predicate.Unconditional	Represents a predicate that is always true.
Price	Represents Price.
Sep10Challenge	Stellar Web Authentication Utilities.
Sep10Challenge.ChallengeTransaction	Used to store the results produced by Sep10Challenge.readChallengeTransaction(String, String, Network, String[], String).
Sep10Challenge.Signer	Represents a transaction signer.
Sep45Challenge	Stellar Web Authentication Utilities for Contract Accounts (SEP-0045).
Sep45Challenge.ChallengeAuthorizationEntries	Contains the parsed data from a SEP-45 challenge.
Sep45Challenge.ChallengeAuthorizationEntries.ChallengeAuthorizationEntriesBuilder
Server	Main class used to connect to Horizon server.
SignerKey	Represents a Stellar signer key used for transaction authorization.
SignerKey.Ed25519SignedPayload	Represents an Ed25519 signed payload as defined in CAP-40.
SorobanDataBuilder	Supports building SorobanTransactionData structures with various items set to specific values.
SorobanDataBuilder.Resources	Represents the resource metrics of the Soroban data.
SorobanDataBuilder.Resources.ResourcesBuilder
SorobanServer	Main class used to connect to the Stellar RPC (formerly Soroban-RPC) instance and exposes an interface for requests to that instance.
SorobanServer.Durability	Represents the "durability keyspace" that this ledger key belongs to, check SorobanServer.getContractData(java.lang.String, org.stellar.sdk.xdr.SCVal, org.stellar.sdk.SorobanServer.Durability) for more details.
SorobanServer.SleepStrategy	Strategy for sleeping between retries in a retry loop.
StrKey	StrKey is a helper class that allows encoding and decoding Stellar keys to/from strings, i.e.
TimeBounds	TimeBounds represents the time interval that a transaction is valid.
TOID	ID represents the total order of Ledgers, Transactions and Operations.
TOID.TOIDRange
Transaction	Represents Transaction in Stellar network.
TransactionBuilder	Builds a new Transaction object.
TransactionBuilderAccount	Specifies interface for Account object used in TransactionBuilder
TransactionPreconditions	Preconditions of a transaction per CAP-21
TransactionPreconditions.TransactionPreconditionsBuilder
TrustLineAsset	Represents a trustline asset in the Stellar network.
Util	Utility class for common operations.
Util.XdrDecodeFunction<T,R>	The function that converts XDR string to XDR object.