申論 6⑴class square {int edge;square(int e){ edge = e; }}public class app {public static void main(String args[]) {square s1 = new square(10);square s2 = new square(10);if(s1 == s2)System.out.print("Equal square");elseSystem.out.print("Not equal square");}}⑵public class app {public static void main(String args[]) {int a[] = {1,2,3,4,5};show(a);}public static void show(int i){System.out.println(i);}public static void show(int b[]){for(int i = 0; i < b.length; i++)System.out.print(b[i] + " ");}}⑶class Circle {protected double radius;Circle(double r){ radius = r; }void show(){System.out.print(radius);}}class Coin extends Circle {private int value;Coin(double r, int v){super(r);value = v;}void show(){ System.out.print(radius+" "+value); }}public class app {public static void main(String args[]){Circle coin = new Coin(3.0, 10);coin.show();}}㈡下列Java 程式之需求為：設定變數color 的值並輸出。請指出其編譯錯誤原因，並針對該錯誤原因說明程式如何修正使之能正確執行。（10 分）