Need Help with the following 2 questions

Generic Progression public class Progression ( protected k first; protected k cur; ProgressionOt I/Constructor first = cur; protected k firstValue(X //Reset cur cur first; return cur, protected k nextValue(){ //cur = cur+1 ; return cur; return cur protected k printProgression(int n).. Geometric Progression l/refines constructor, replaces nextValue(), and linherits Progression(), firstValue), printProgression(int) class GeomProgression extends Progression Long> protected long r GeomProgression(){ //first-1, r #1 by default this(1,1); //first 1;r1; GeomProgression(long a, long base) {//Set r to base first a; r-base; protected long nextValuet cur r; l/cur cur'r return cur