202      * information about the process, if the process is alive and the
 203      * information is available.
 204      *
 205      * @return a snapshot of information about the process, always non-null
 206      */
 207     Info info();
 208 
 209     /**
 210      * Information snapshot about the process.
 211      * The attributes of a process vary by operating system and are not available
 212      * in all implementations.  Information about processes is limited
 213      * by the operating system privileges of the process making the request.
 214      * The return types are {@code Optional<T>} allowing explicit tests
 215      * and actions if the value is available.
 216      * @since 1.9
 217      */
 218     public interface Info {
 219         /**
 220          * Returns the executable pathname of the process.
 221          *





 222          * @return an {@code Optional<String>} of the executable pathname
 223          *         of the process
 224          */
 225         public Optional<String> command();
 226 
 227         /**
 228          * Returns an array of Strings of the arguments of the process.



 229          *
 230          * @return an {@code Optional<String[]>} of the arguments of the process
 231          */
 232         public Optional<String[]> arguments();
 233 
 234         /**
 235          * Returns the start time of the process.
 236          *
 237          * @return an {@code Optional<Instant>} of the start time of the process
 238          */
 239         public Optional<Instant> startInstant();
 240 
 241         /**
 242          * Returns the total cputime accumulated of the process.
 243          *
 244          * @return an {@code Optional<Duration>} for the accumulated total cputime
 245          */
 246         public Optional<Duration> totalCpuDuration();
 247 
 248         /**

 202      * information about the process, if the process is alive and the
 203      * information is available.
 204      *
 205      * @return a snapshot of information about the process, always non-null
 206      */
 207     Info info();
 208 
 209     /**
 210      * Information snapshot about the process.
 211      * The attributes of a process vary by operating system and are not available
 212      * in all implementations.  Information about processes is limited
 213      * by the operating system privileges of the process making the request.
 214      * The return types are {@code Optional<T>} allowing explicit tests
 215      * and actions if the value is available.
 216      * @since 1.9
 217      */
 218     public interface Info {
 219         /**
 220          * Returns the executable pathname of the process.
 221          *
 222          * @implNote Note that the returned pathname may be truncated on some
 223          *           platforms due to system limitations. It may also only
 224          *           contain the name of the executable without the full path
 225          *           information.
 226          *
 227          * @return an {@code Optional<String>} of the executable pathname
 228          *         of the process
 229          */
 230         public Optional<String> command();
 231 
 232         /**
 233          * Returns an array of Strings of the arguments of the process.
 234          *
 235          * @implNote Note that the argument list may be truncated on some
 236          *           platforms due to system limitations.
 237          *
 238          * @return an {@code Optional<String[]>} of the arguments of the process
 239          */
 240         public Optional<String[]> arguments();
 241 
 242         /**
 243          * Returns the start time of the process.
 244          *
 245          * @return an {@code Optional<Instant>} of the start time of the process
 246          */
 247         public Optional<Instant> startInstant();
 248 
 249         /**
 250          * Returns the total cputime accumulated of the process.
 251          *
 252          * @return an {@code Optional<Duration>} for the accumulated total cputime
 253          */
 254         public Optional<Duration> totalCpuDuration();
 255 
 256         /**