java - Object Array of length 0 but it still contains Info -

below have pasted code have been working on. need target line mixer can't figure out how request 1 line.info[] array. has length of 0 if output string holds single line of information. want cast don't know how properly.

thanks, hat

 package soundconnect;       import javax.sound.sampled.audiosystem;     import javax.sound.sampled.line;     import javax.sound.sampled.lineunavailableexception;     import javax.sound.sampled.mixer;      public class soundconnect {      /**      * @param args command line arguments      */        public static void main(string[] args) throws lineunavailableexception {          mixer.info [] mixes = audiosystem.getmixerinfo();          mixer sys_mix = audiosystem.getmixer(mixes[1]);         line.info[] t_nfo = sys_mix.gettargetlineinfo();          line line1 = sys_mix.getline(t_nfo[0]);                 /* t_nfo has length of 0 has information when output           *           */                     } } 

when output string, mean you're calling tostring() method of array, object in java. print out memory address , class name array. default tostring() printing array object has nothing elements in array. print same value regardless of what's stored inside of it, including if has 0 length.