JAVA课堂例题(4)

public long myPower(int m,int n) { int a=1;

for(int i=0;i

a=a*m; }

return (a); }

public boolean findFactorSum(int m,int n) {

boolean mm;

if(m%n==0||n%m==0){mm=true; }

else mm=false; return (mm); } }

public class Test {

public static void main(String[] args) {

A s1 =new A1(); A s2 =new A1();

System.out.println(s1.factorial(5)); System.out.println(s2.myPower(2,8));

System.out.println(s2.findFactorSum(3,6)); } }

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作业二

abstract class Animal2 {

public abstract void sound( ) ; }

class Showinfo extends Animal2 {

private String type; String sound;

Showinfo(String m,String n)

{

type=m; sound=n; }

String ToString() {

return type; }

String Tosound() {

return sound; }

public void sound( ) {

System.out.println(type+\的叫声是:\} }

class TestMyanimal {

public static void main(String arg[]) {

Showinfo A=new Showinfo(\鸟儿\唧唧!\A.sound( ); } }

------------------------------------------------------------------------------------------ 作业三

interface Flyable1 {

double flySpeed(); }

class Speed implements Flyable1 {

double speed; Speed(double m) {

speed=m; }

public double flySpeed() {

return speed; }

void showinfo() {

System.out.println(\最大的飞行速度是：\米/秒\} }

class H {

public static void main(String[] arg) {

Speed A=new Speed(50); A.showinfo(); } }

------------------------------------------------------------------------------------------ 作业四

interface Flyable {

double flySpeed(); }

class Animal {

private String yell;

public Animal(String yell) {

this.yell = yell; }

public String tistring() {

return this.yell; } }

public class Glede extends Animal implements Flyable {

double flySpeed;

public Glede(String yell, double flySpeed) {

super(yell);

this.flySpeed = flySpeed; }

public double flySpeed() {

return this.flySpeed; } }

public class Pigeon extends Animal implements Flyable {

double flySpeed;

public Pigeon(String yell, double flySpeed) {

super(yell);

this.flySpeed = flySpeed; }

public double flySpeed() {

return this.flySpeed; } }

public class Test4 {

public static void main(String[] args) {

Pigeon p = new Pigeon(\

System.out.println(\鸽子的叫声:\鸽子最大飞行速度:\Glede p1 = new Glede(\

System.out.println(\老鹰的叫声:\老鹰最大飞行速度:\} }

------------------------------------------------------------------------------------------ 到此

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定义一个抽象类Person,其中有属性姓名name，性别sex和职业profession,有抽象方法printProfession(),

定义Person类的子类Student,重写Person类的printProfession(),输出\学生\在主方法中创建学生对象，调用方法输出职业信息

public abstract class Person {

String name; String sex;

String profession;

abstract void printProfession(); }

class Student extends Person {

void printProfession(); {

System.out.println(profession); }

public static void main(String[] args) {

Student s1=new Student(); s1.profession=\s1.printProfession(); }

} （尚需探讨）

------------------------------------------------------------------------------------------ 数组

编写程序，从键盘输入12个月中每个月的降雨量，计算月平均降水量、月降雨量和月平均降雨量的偏差，

并将结果输出

import java.util.Scanner public class Rain {

public static void main(String[] args) {

double[] rains=new double[12]; double[] rainde=new double[12]; double ave=0; double sum=0;

Scanner s=new Scanner(System.in); for(int i=0;i<12;i++) {

rains[i]=s.nextDouble(); sum+=rains[i];