boolean exec(java.lang.String params, EngineExecuter executer) throws JURLExecuterException
params- Array of strings, each element of which is defined by yourself and also parsed by yourself. You can enter the PARAMETERs in the Report Inspector. If no PARAMETERs are entered, then params.length is zero.
executer- Executor of EngineExecutor, which is another interface JReport provides for exporting a report to HTML, TXT or PDF format with the exiting functions.