[Java] acquisition and judgment of command line parameters

The following program block acquires command line parameters and determines its value. The first judgment guarantees if there is no parameter input, output all items, if there is a parameter, the later IF statement is output according to the judgment. Public static void main (String Argv []) {

String test = "all"; if (argv.Length> 0) {test = argv [0];

IF (Test.Equals ("all") || Test.Equals ("TOSTREAMRESULT")) {system.out.println ("/ n / n ==== ttreamReamResult ====");

Try {exampletostreamresult ();} catch (xpathexception ex) {handlexception (ex);}} ..........}