@Test public void markAsUsed() throws Exception { Address addr1 = group.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS); Address addr2 = group.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS); assertEquals(addr1, addr2); group.markPubKeyHashAsUsed(addr1.getHash160()); Address addr3 = group.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS); assertNotEquals(addr2, addr3); }