XChange is a Java library providing a unified API to all the major Bitcoin exchanges including:
- MtGox - polling and streaming market data, trading and account data
- VirtEx - polling market data
- BTC-E - polling market data, trading and account data
- Bitstamp - polling market data, trading and account data
- CampBX - polling market data, trading and account data
- Bitcurex - polling market data
- BTC-China - polling market data, trading and account data
- Kraken - polling market data, trading and account data
- BitcoinCharts - polling market data (Bitcoin Exchange Rates)
- OpenExchangeRates - polling market data (Fiat Currency Exchange Rates)
- Blockchain Info - polling market data (Bitcoin Address Information)
Some more links:
* 1.9.0 Release Blog Article - http://blog.xeiam.com/2013/10/xchange-190-released.html
* Change Log and Jars - http://xeiam.com/xchange_changelog.jsp
* Example Code - http://xeiam.com/xchange_examplecode.jsp