examples

Examples for Polkadot Java Client

Code examples used in the Documentation

Encoding

Examples for SCALE add SS58

Run

cd encoding
./gradlew run

Types

Examples for DotAmount, formatting, hashes and Address

Run

cd types
./gradlew run

RPC

Examples for accessing JSON RPC through HTTP or WebSockets. The examples expect Polkadot node running and listening for RPC and WS requests on the localhost (i.e. default node options)

Show current head

cd rpc
./gradlew run

Follow updates to the current head (use Ctrl+C to exit)

cd rpc
./gradlew run -PmainClass=FollowState

Describe runtime

cd rpc
./gradlew run -PmainClass=DescribeRuntime

Runtime Explorer

A web-based explorer of the Runtime Metadata. The examples expect Polkadot node running and listening for RPC requests on the localhost (i.e. default node options)

cd runtime-explorer
./gradlew bootRun

Open http://localhost:8080

Keys

Generate Secret/Public Keys and Address

cd keys
./gradlew run

Balance check and transfer

Check account status and/or make a transfer of the balance to another address.

For the development network, transfer random amount for Alice to Bob

cd balance
./gradlew run

Note	To run a development network use: polkadot --dev

Transfer using real network (ex. Kusama)

cd balance
./gradlew run --args="wss://cc3-5.kusama.network SENDER_KEY_SEED RECIPIENT_ADDRESS"

Warning

If you use on a real network please be aware that it executes the transfer without any additional confirmation from you