java编写程序 编写一个Java程序,完成如下功能:
java\u8bed\u8a00\u7f16\u5199\u7a0b\u5e8f\u7b2c\u4e00\u9898\uff1a
public class Cuboid {
double length;
double width;
double height;
}
public class CuboidWeight extends Cuboid {
double weight;
}
public class CuobidValue extends CuboidWeight {
double value;
}
\u7b2c\u4e8c\u9898\uff1a
public class Animal implements Eatable {
@Override
public void haoToEat() {
}
@Override
public String toString() {
return super.toString();
}
}
public class Apple extends Fruit {
@Override
public String toString() {
return super.toString();
}
}
public class Chicken extends Animal {
@Override
public String toString() {
return super.toString();
}
}
public interface Eatable {
public abstract void haoToEat();
}
public class Elephant extends Animal {
@Override
public String toString() {
return super.toString();
}
}
public class Fruit implements Eatable {
@Override
public void haoToEat() {
}
}
public class Orange extends Fruit {
@Override
public String toString() {
return super.toString();
}
}
public class Tiger extends Animal {
@Override
public String toString() {
return super.toString();
}
}
\u6d4b\u8bd5\u7a0b\u5e8f\uff1a
public class Test {
public static void showObject(Object o){
System.out.println(o);
if(o instanceof Eatable)
((Eatable) o).haoToEat();
}
}
\u8fd9\u4e2a\u9898\u53ef\u4ee5\u4f7f\u7528switch-case\u8bed\u53e5\u6765\u89e3\u51b3\uff0c\u9996\u5148\u521b\u5efa\u7b80\u5355\u6587\u672c\u626b\u63cf\u5668\uff0c\u7136\u540e\u4ece\u952e\u76d8\u8bfb\u51650~9\u6216\u5b57\u6bcda\uff0c\u7136\u540e\u901a\u8fc7\u5f00\u5173\u8bed\u53e5\u8fdb\u884c\u5339\u914d\uff0c\u8fdb\u800c\u8f93\u51fa\u7ed3\u679c\uff0c\u4ee3\u7801\u5982\u4e0b\uff1a
\u5728main()\u65b9\u6cd5\u4e2d\u8c03\u7528\uff0c\u5728\u63a7\u5236\u53f0\u8f93\u5165\uff0c\u9a8c\u8bc1\u8f93\u51fa\uff0c\u6548\u679c\u5982\u4e0b\uff1a
package com.xrom.ssh;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
public class test {
static class personIn{
private String name;
private Integer score;
public personIn(String name, Integer score) {
this.name = name;
this.score = score;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getScore() {
return score;
}
public void setScore(Integer score) {
this.score = score;
}
}
public static void main(String[] args) {
Pattern r = Pattern.compile("[1-9]\\d*");
Scanner in=new Scanner(System.in);
Integer count=0;
String countStr="";
do {
System.out.println("请输入学生数：");
countStr=in.next();
if(!r.matcher(countStr).matches())
System.out.println("输入不正确");
} while (!r.matcher(countStr).matches());
count=Integer.valueOf(countStr);
countStr="";
String name="";
Integer score=0;
List<personIn> list=new ArrayList<>();
for (int i = 0; i < count; i++) {
System.out.println("请输入第"+(i+1)+"位同学的姓名:");
name=in.next();
do {
System.out.println("请输入"+name+"的成绩:");
countStr=in.next();
if(!r.matcher(countStr).matches())
System.out.println("输入不正确");
} while (!r.matcher(countStr).matches());
score=Integer.valueOf(countStr);
list.add(new personIn(name, score));
}
List<personIn> list2=list.stream().sorted(Comparator.comparing(personIn::getScore).reversed()).collect(Collectors.toList());
list2.forEach(v->System.out.println(v.getName()+" "+v.getScore()));
}
}
import java.util.Scanner;
public class P {
public static void main(String[] args) {
final String NewLine=System.getProperty("line.separator");
Scanner sc=new Scanner(System.in);
boolean swap=true;
String[] names;
int[] scores;
int sorted=0,n,s;
String str;
System.out.println("请输入学生的人数：");
n=sc.nextInt();
names=new String[n];
scores=new int[n];
for(int i=0;i<n;i++) {
System.out.printf("请输入第%d个学生的姓名 成绩：",i+1);
names[i]=sc.next();
scores[i]=sc.nextInt();
}
//冒泡排序
while(swap) {
swap=false;
for(int i=0;i<scores.length-1-sorted;i++) {
if(scores[i]<scores[i+1]) {
s=scores[i];
scores[i]=scores[i+1];
scores[i+1]=s;
str=names[i];
names[i]=names[i+1];
names[i+1]=str;
swap=true;
}
}
sorted++;
}
System.out.println("按成绩降序排序后，学生的信息如下：");
for(int i=0;i<n;i++) {
System.out.printf("%s\t%d%s",names[i],scores[i],NewLine);
}
sc.close();
}
}
你这要求都说的这么混乱，还是放弃编程把
你在说的清楚点，数量怎么与学生姓名和成绩挂钩，
或者发题
？？
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