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caver-java (1.5.0 or later)

caver-java is a lightweight, high modular, convenient Java and Android library to interact with clients (nodes) on the Klaytn network: This library is an interface which allows Java applications to easily communicate with Klaytn network.


  • Complete implementation of Klaytn’s JSON-RPC client API over HTTP and IPC
  • Support of Klaytn transaction, account, and account key types
  • Auto-generation of Java smart contract wrapper to deploy and execute a smart contract from native Java code
  • Creation of a new wallet and managing Klaytn wallets
  • Command line tools
  • Android compatible
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