You are asked to write the Point class in order to use point-type objects as follows: Point P = new Point (1,2) // create point P with coordinates (1,2)
Point P = new Point (). // create the coordinate point (0,0)
P. x = 2 // sets the abscissa of P equal to 2
P. y = 5 // sets the abscissa of P = 5
Point Q = P. getSymmetric () // returns the point Q symmetrical to P with respect to the origin. For example if P (2,3) => Q = (- 2, -3)

Code in JAVA, Thanks!

Suppose we have a byte addressable computer that has a 32-byte cache with 8 bytes per block. the memory address is 8 bits long. the system accesses memory addresses (in hex) in this exact order: 6e, b9, 17, e0, 4e, 4f, 50, 91, a8, ab, ad, 93, and 94. (a) assuming the cache is direct mapped, what memory addresses will be in cache block 2 after the last address has been accessed? (b) assuming the cache is direct mapped, what is the hit ratio for the entire memory reference sequence given, assuming the cache is initially empty? (c) assuming the cache is 2-way set associative with a lru replacement policy, what is the hit ratio?

All of the following are characteristics that must be contained in any knowledge representation scheme except

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_cost should be removed since header files should not contain constants.c)the definition of book should be removed since header files should not contain class definitions.d)the body of the calculate_terms function should be added to the header file.