| Package | Description | 
|---|---|
| org.bitcoinj.core | 
 The core package contains classes for network messages like  
Block and
 Transaction, peer connectivity via PeerGroup,
 and block chain management. | 
| Modifier and Type | Class and Description | 
|---|---|
class  | 
Peer
A Peer handles the high level communication with a Bitcoin node, extending a  
PeerSocketHandler which
 handles low-level message (de)serialization. | 
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