Finally, after several years of lurking I have registered!

> actually i want to convert pronto hex code to .wave file in java


You are looking for IrpMaster, which is the engine of the previously mentionen IrMaster. IrpMaster can be used as a command line program, but in particular as an Java library, as requested here. You can achieve what you want in just a few lines of Java, say

IrSignal irSignal = Pronto.ccfSignal("0000 0073 0000 001A 0060 0020 0010 0010 0010 0010 0010 0020 0010 0020 0020 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0010 0E10");
ModulatedIrSequence modulatedIrSequence = irSignal.toModulatedIrSignal(1);
Wave wave = new Wave(modulatedIrSequence, 48000, 8, 1, false, true, true, false);
wave.export(new File("export.wave"));

IrpMaster can be downloaded from my website: http://www.harctoolbox.org API documentation can also be found online there.(or can be generated automatically from the source by javadoc).

Disclaimer: I am the author :-)