java编程作业
以下是源代码和运行结果截图，如果哪里有问题的话可以来找我。
classPet{
intage;
intweight;
publicPet(intage,intweight){
super();
this.age=age;
this.weight=weight;
}
publicvoidshowInfo(){
System.out.println("myweightis"+this.weight+"andmyageis"+this.age);
}
publicintgetWeightInfo(){
returnthis.weight;
}
publicintgetAgeInfo(){
returnthis.age;
}
}
interfaceEatable{
publicabstractvoidbeEatted();//默认为public和abstract
}
classCatextendsPet{
publicCat(intage,intweight){
super(age,weight);
//TODOAuto-generatedconstructorstub
}
privateintcry;
publicvoidshowInfo(){
System.out.println("I'maCat,myweightis"+this.weight+"andmyageis"+this.age);
}
publicintgetWeightInfo(){
returnsuper.getWeightInfo();
}
publicintgetAgeInfo(){
returnsuper.getAgeInfo();
}
}
{
publicDog(intage,intweight){
super(age,weight);
//TODOAuto-generatedconstructorstub
}
privateintcry;
publicvoidshowInfo(){
System.out.println("I'maDog,myweightis"+this.weight+"andmyageis"+this.age);
}
publicintgetWeightInfo(){
returnsuper.getWeightInfo();
}
publicintgetAgeInfo(){
returnsuper.getAgeInfo();
}
publicvoidbeEatted(){
}
}
classFruitimplementsEatable{
publicFruit(Stringcolor,Stringaddress){
super();
this.color=color;
this.address=address;
}
Stringcolor;
Stringaddress;
publicvoidbeEatted(){
System.out.println("I'mbeeneaten!");
}
publicvoidshowInfo(){
System.out.println("mycoloris"+this.color+"andmyaddressis"+this.address);
}
publicStringgetColorInfo(){
returnthis.color;
}
publicStringgetAddressInfo(){
returnthis.address;
}
}
classBananaextendsFruit{
publicBanana(Stringcolor,Stringaddress){
super(color,address);
//TODOAuto-generatedconstructorstub
}
publicvoidbeEatted(){
System.out.println("I'maBanana,I'mbeeneaten!");
}
publicvoidshowInfo(){
System.out.println("I'maBanana,mycoloris"+this.color+"andmyaddressis"+this.address);
}
@Override
publicStringgetColorInfo(){
//TODOAuto-generatedmethodstub
returnthis.getColorInfo();
}
@Override
publicStringgetAddressInfo(){
returnthis.getAddressInfo();
}
}
classAppleextendsFruit{
Stringtype;
publicApple(Stringcolor,Stringaddress,Stringtype){
super(color,address);
this.type=type;
//TODOAuto-generatedconstructorstub
}
publicStringgetType(){
returntype;
}
publicvoidbeEatted(){
System.out.println("I'manapple,I'mbeeneaten!");
}
publicvoidshowInfo(){
System.out.println("I'manApple,mycoloris"+this.color+",myaddressis"+this.address
+"andmytypeis"+type);
}
@Override
publicStringgetColorInfo(){
//TODOAuto-generatedmethodstub
returnthis.getColorInfo();
}
@Override
publicStringgetAddressInfo(){
returnthis.getAddressInfo();
}
}
publicclassPrograms{
publicstaticvoidmain(String[]args){
Catmycat=newCat(10,20);
Dogmydog=newDog(10,24);
Bananamybanana=newBanana("黄色","北京");
Applemyapple=newApple("红色","上海","新品种");
mycat.showInfo();
mydog.showInfo();
mybanana.showInfo();
myapple.showInfo();
mydog.beEatted();
mybanana.beEatted();
myapple.beEatted();
}
}
② 简单的java编程作业~~强烈求援助~~
import java.util.Scanner;
public class Mytest {
public static void main (String args[]){
Mytest tMytest=new Mytest();
tMytest.order();
tMytest.avg();
tMytest.min();
}
private void avg(){
float[] tNumbers=new float[10];
float sum=0;
for(int i=0;i<10;i++){
Scanner tScan=new Scanner(System.in);
tNumbers[i]=tScan.nextFloat();
sum+=tNumbers[i];
}
System.out.print("平均值为："+sum/10+"\n");
int num=0;
String cont="";
for(int i=0;i<10;i++){
if(tNumbers[i]>sum/10){
num+=1;
cont+=tNumbers[i]+", ";
}
}
System.out.println(num+"个数字在平均值以上："+cont);
}
private void min(){
float[] tNumbers=new float[10];
float tMin=0;
for(int i=0;i<10;i++){
Scanner tScan=new Scanner(System.in);
tNumbers[i]=tScan.nextFloat();
if(i==0){
tMin=tNumbers[i];
}else {
if(tMin>=tNumbers[i]){
tMin=tNumbers[i];
}
}
}
System.out.print("最小值为："+tMin);
}
private void order(){
float[] tNumbers=new float[10];
for(int i=0;i<10;i++){
Scanner tScan=new Scanner(System.in);
tNumbers[i]=tScan.nextFloat();
}
for(int i=0;i<10;i++){
for(int j=1;j<10-i;j++){
if(tNumbers[j-1]>tNumbers[j]){
tNumbers[j]=tNumbers[j]+tNumbers[j-1];
tNumbers[j-1]=tNumbers[j]-tNumbers[j-1];
tNumbers[j]=tNumbers[j]-tNumbers[j-1];
}
}
System.out.print(tNumbers[10-i-1]+", ");
}
}
}
③ 关于java编程的作业，有没有谁会帮一下忙啊TAT(回答请用英文)，万分感谢
1, java.util.Scanner
2,nextInt()
3,nextDouble()
4,next()
5,nextLine()
6,nextShort()
part2
int One=keyboard.nextInt();
double One=keyboard.nextDouble();
short One =keyboard.nextShort();
byte One=keyboard.nextByte();
④ java编程题作业二
publicclassShuzu{
publicstaticvoidmain(String[]args){
getMax();
getSum();
}
publicstaticvoidgetMax(){
int[]buf={10,15,12,9,7};
intmax=0;
for(inti=0;i<buf.length;i++){
if(buf[i]>max){
max=buf[i];
}
}
System.out.println("最大值："+max);
}
publicstaticvoidgetSum(){
int[]buf={10,15,12,9,7};
intsum=0;
for(inti=0;i<buf.length;i++){
sum=sum+buf[i];
}
System.out.println("和为："+sum);
}
}
⑤ 关于JAVA编程作业
好久没写代码了。拿你这两题试试。作业以后还是要自己做。就帮你玩这一次，写的不一定好，不足之处你自己看着改改吧。
第一题
import java.util.Scanner;
public class MyWork {
public static int input;
private int sum;
public void fact(int n) {
for(int i=1; i<=n; i++){
sum+=i;
}
if(n>0){
fact(--n);
}else{
System.out.println(input+"阶乘之和为："+sum);
}
}
public static void main(String[] args) {
System.out.print("输入N的值：");
Scanner scan = new Scanner(System.in);
input = scan.nextInt();
MyWork work = new MyWork();
work.fact(input);
}
}
第二题
public class HomeWork {
public void printRectangle(){
for(int i=1; i<=9; i++){
for(int j=1; j<=9; j++){
System.out.print(i+"*"+j+"="+i*j+" ");
}
System.out.println();
}
}
public void printTriangle(){
for(int i=1; i<=9; i++){
for(int j=1; j<=i; j++){
System.out.print(i+"*"+j+"="+i*j+" ");
}
System.out.println();
}
}
public static void main(String[] args) {
HomeWork work = new HomeWork();
System.out.println("矩形打印：");
work.printRectangle();
System.out.println();
System.out.println("三角形打印：");
work.printTriangle();
}
}
⑥ Java四个编程作业： <1>从键盘输入一个双精度数，再向屏幕输出； <2>判断
importjava.util.Scanner;
publicclassexp{
publicstaticvoidmain(String[]args){
Scannerscanner=newScanner(System.in);
System.out.print("输入数：");
intn=scanner.nextInt();
inttemp=1,sum=0;
for(inti=1;i<=n;i++){
//*temp保存每一个数的阶乘
temp=temp*i;
//sum保存所有数的阶乘的和
sum=sum+temp;
}
System.out.println("结果是:"+sum);
}
}
⑦ JAVA编程作业
importjava.math.BigDecimal;
importjava.util.Random;
publicclassIncrease{
publicstaticbooleanisPrime(inta){
booleanflag=true;
if(a<2){//素数不小于2
returnfalse;
}else{
for(inti=2;i<=Math.sqrt(a);i++){
if(a%i==0){//若能被整除，则说明不是素数，返回false
flag=false;
break;//跳出循环
}
}
}
returnflag;
}
publicstaticvoidtest1(){
inti,n,k=0;
System.out.println("1-1000内素数");
for(n=3;n<=1000;n++){//3~1000的所有数
i=2;
while(i<n){
if(n%i==0)break;//若能整除说明n不是素数，跳出当前循环
i++;
}
if(i==n){//如果i==n则说明n不能被2~n-1整除，是素数
k++;//统计输出数的个数
System.out.print(i+" ");
if(k%6==0)//每输出5个则换行
System.out.println();
}
}
}
publicstaticvoidtest2()
{
Randomr=newRandom();
System.out.println(r.nextInt(301)-100);
}
publicstaticinttest3(intm,intn){
//辗转相除法
intr;
do{
if(m<n)
{
r=m;
m=n;
n=r;
}
r=m%n;
m=n;
n=r;
}while(r!=0);
returnm;
}
publicstaticdoubletest4(intn){
doublee=1f;
doubletotal=1.0;
for(inti=0;i<n;i++)
{
total/=i+1;
e+=total;
}
BigDecimalb=newBigDecimal(e);
e=b.setScale(4,BigDecimal.ROUND_HALF_UP).doubleValue();//表明四舍五入，保留四位小数
returne;
}
publicstaticvoidmain(String[]args){
//第一题测试
System.out.println(isPrime(131));
test1();
//第二题测试
test2();
//第三题测试
System.out.println("最大公约数为："+test3(1302,19924));
//第四题测试
System.out.println("e="+test4(100));
}
}
运行结果：
true
1-1000内素数
3 5 7 11 13 17
19 23 29 31 37 41
43 47 53 59 61 67
71 73 79 83 89 97
101 103 107 109 113 127
131 137 139 149 151 157
163 167 173 179 181 191
193 197 199 211 223 227
229 233 239 241 251 257
263 269 271 277 281 283
293 307 311 313 317 331
337 347 349 353 359 367
373 379 383 389 397 401
409 419 421 431 433 439
443 449 457 461 463 467
479 487 491 499 503 509
521 523 541 547 557 563
569 571 577 587 593 599
601 607 613 617 619 631
641 643 647 653 659 661
673 677 683 691 701 709
719 727 733 739 743 751
757 761 769 773 787 797
809 811 821 823 827 829
839 853 857 859 863 877
881 883 887 907 911 919
929 937 941 947 953 967
971 977 983 991 997 106
最大公约数为：2
e=2.7183