如何在java代码中执行db2 load命令导入数据！

create procedure sysproc.db2load 
（ 
    in version_number integer,
    in cursor_statement varchar（32672),
    in load_command varchar（32672),
    out sqlcode integer,
    inout sqlmessage varchar（2048),
    out rows_read bigint,
    out rows_skipped bigint,
    out rows_loaded bigint,
    out rows_rejected bigint,
    out rows_deleted bigint,
    out rows_committed bigint,
    out rows_part_read bigint,
    out rows_part_rejected bigint,
    out rows_part_partitioned bigint,
    inout mpp_load_summary varchar（32672)
)
specific db2load 
language c 
parameter style db2sql 
not fenced 
modifies sql data 
program type main 
external name 'system_routine~db2load!db2load'

callablestatement cs = connection.preparecall（"{call sysproc.db2load（1,'','" + loadcommand + "',?,?,?,?,?,?,?,?,?,?,?,?)}");
cs.registeroutparameter（constants.num_1, types.integer);
cs.setstring（constants.num_2, "");
cs.registeroutparameter（constants.num_2, types.varchar);
cs.registeroutparameter（constants.num_3, types.bigint);
cs.registeroutparameter（constants.num_4, types.bigint);
cs.registeroutparameter（constants.num_5, types.bigint);
cs.registeroutparameter（constants.num_6, types.bigint);
cs.registeroutparameter（constants.num_7, types.bigint);
cs.registeroutparameter（constants.num_8, types.bigint);
cs.registeroutparameter（constants.num_9, types.bigint);
cs.registeroutparameter（constants.num_10, types.bigint);
cs.registeroutparameter（constants.num_11, types.bigint);
cs.setstring（constants.num_12, "");
cs.registeroutparameter（constants.num_12, types.varchar);
cs.ＥＸＥＣute（);
sqlcode = cs.getint（1);