DB2 also seems to support cursors as out-parameters in JDBC, though I've never used it:

http://pic.dhe.ibm.com/infocenter/db2luw/v10r1/index.jsp?topic=%2Fcom.ibm.db2.luw.apdv.java.doc%2Fsrc%2Ftpc%2Fimjcc_t0054848.html