question: public String toString ( ) { StringBuffer sb = new StringBuffer ( ) ; char [ ] separator = { '[' , ' ' } ; for ( int i = 0 ; i < components . length ; i ++ ) { sb . append ( separator ) ; sb . append ( components [ i ] ) ; separator [ 0 ] = ',' ; } sb . append ( ']' ) ; return sb . toString ( ) ; }
target:  Returns a string representation of the vector.