question: public DoubleBuffer put ( double [ ] src , int srcOffset , int doubleCount ) { Arrays . checkOffsetAndCount ( src . length , srcOffset , doubleCount ) ; if ( doubleCount > remaining ( ) ) { throw new BufferOverflowException ( ) ; } for ( int i = srcOffset ; i < srcOffset + doubleCount ; ++ i ) { put ( src [ i ] ) ; } return this ; }
target:  Writes doubles from the given double array, starting from the specified offset, to the current position and increases the position by the number of doubles written.