question: ensures that this object is in the running state . if this object is not running , then the call has the effect of setting the starttime attribute to the current value of system.currenttimemillis and setting the running attribute to true . concode_field_sep boolean running concode_elem_sep long total concode_elem_sep long startTime concode_elem_sep long lastStart concode_field_sep void zero concode_elem_sep long currentElapsedTime concode_elem_sep void stop concode_elem_sep String currentElapsedTimeToMessage concode_elem_sep String toString concode_elem_sep void mark concode_elem_sep long elapsedTime concode_elem_sep String elapsedTimeToMessage
target: void function ( ) { startTime = System . currentTimeMillis ( ) ; running = true ; }