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package prj190709_1; class Car{ String color; int door; void drive() { System.out.println("dirve"); } void stop() { System.out.println("stop"); } } class FireEngine extends Car{ void water() { System.out.println("FireEngine water"); } } class Ambulance extends Car{ void siren() { System.out.println("siren"); } } public class PolymorphTest { public static void main(String[] args) { Car car = null..

package prj190708; class Dog{ int zzz; int yyy; void setZzz(int zzz) { this.zzz = zzz; } void setYyy(int yyy) { this.yyy = yyy; } int getZzz() { return zzz; } int getYyy() { return yyy; } } class Bus{ double pp; double ttt; void setPp(double pp) { this.pp = pp; } void setTtt(double ttt) { this.ttt = ttt; } double getPp() { return pp; } double getTtt() { return ttt; } } class Polygon{ float qqq;/..

package prj190703; import java.util.*; public class School { public static void main(String[] args) { Manager s = new Manager(); Scanner scan = new Scanner(System.in); int count; boolean chk = false; System.out.print("입력할 학생 수 ?>>"); count = scan.nextInt(); Manager[] arr = new Manager[count]; for(int i =0; i=60) c = 'D'; else c = 'F'; return c; } }//main end //클래스 부분 package prj190703; public cl..