exec not working with java 1.7.21, but in netbeans works fine -


i made little program , worked fine, now. first, mux xml chapter file in mkv file, muxed mkv file. day ago updated java 1.7.21 , think problem why not working now. it's little strange, when run in netbeans fine, when build , run .jar file, not working. create xml file, not mux in mkv file (and because not muxed not delete xml file). here code: (filename=xml file path; mkv=mkv file path)

    public void muxing() {     try {         runtime rt = runtime.getruntime();         process p = rt.exec("c:\\program files\\mkvtoolnix\\mkvpropedit.exe --chapters \""+filename+"\" \""+mkv+"\"");         if (p.waitfor()==0) {             file xmlfile=new file(filename);             xmlfile.delete();         }     }     catch(exception e) {         system.out.println(e.getmessage());     } }

the program worked java 1.6 , think 1.7.17 too. win7 32bit. sorry bad english.

oracle has made breaking changes runtime.exec() in java 7 update 21 (and 6 update 45).

if program name contains spaces, need specify command , arguments in array:

process p = runtime.getruntime().exec(new string[] {     "c:\\program files\\mkvtoolnix\\mkvpropedit.exe",     "--chapters", "\""+filename+"\"", "\""+mkv+"\""});

another option use java.lang.processbuilder:

process p = new processbuilder("c:\\program files\\mkvtoolnix\\mkvpropedit.exe",     "--chapters", "\""+filename+"\"", "\""+mkv+"\"").start();

as stated oracle:

applications need launch programs spaces in program name should consider using variants of runtime.exec allow command , arguments specified in array.

alternatively, preferred way create operating systems processes since jdk 5.0 using java.lang.processbuilder. processbuilder class has more complete api setting environment, working directory , redirecting streams process.


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