java代码练习题 java基础笔试代码题

java练习题求完整代码按照题目要求编写的用javaBean规范设计的学生类Student的Java程序如下
需要创建user.java.test包,把Student.java文件和Test.java文件放入包中,编译Student.java文件并且编译运行Test.java文件得到运行结果
Student.java文件代码如下
package user.java.test;
import java.io.Serializable;
public class Student implements Serializable{
private static final long serialVersionUID = 1L;
private String no;
private String name;
private double score;
public Student(){}
public Student(String no,String name,double score){
this.no=no;
this.name=name;
this.score=score;
}
public String getNo(){ return no;}
public void setNo(String no){ this.no=no;}
public String getName(){ return name;}
public void setName(String name){ this.name=name;}
public double getScore(){ return score;}
public void setScore(double score){ this.score=score;}
public String toString(){
return "学号:"+no+",姓名:"+name+",成绩:"+score;
}
public static double getAvg(Student[] sArray){
double sum=0,avg;
for(int i=0;isArray.length;i++){
sum=sum+sArray[i].getScore();
}
avg=sum/sArray.length;
return avg;
}
}
【java代码练习题 java基础笔试代码题】Test.java文件代码如下
package user.java.test;
public class Test{
public static void main(String[] args){
Student[] sArray=new Student[5];
sArray[0]=new Student("001","张三",89.5);
sArray[1]=new Student("002","李四",82.5);
sArray[2]=new Student("003","王五",93);
sArray[3]=new Student("004","赵六",73.5);
sArray[4]=new Student("005","孙七",66);
System.out.println("这些学生的平均分:"+Student.getAvg(sArray));
for(int i=0;isArray.length;i++){
System.out.println(sArray[i].toString());
}
}
}
java练习题求大神刚学按照题目要求编写的商品类Item的Java程序如下
public class Item{
public String code,name,type;
public double price;
public static int totalNum=0;
public Item(){}
public Item(String code,String name){
this.code=code;
this.name=name;
totalNum++;
}
public static void main(String[] args){
Item[] item=new Item[10];
item[0]=new Item("666","戴尔(DELL) 游戏笔记本");
item[0].type="游戏";item[0].price=5499.00;
item[1]=new Item("007","苹果（Macbook pro）笔记本");
item[1].type="电脑,办公";item[1].price=18000.00;
for(int i=0;iItem.totalNum;i++){
System.out.println("名称:"+item[i].name+",价格:"+item[i].price);
}
System.out.println("总商品数量:"+Item.totalNum);
}
}
JAVA 练习题public class JavaExos {
public static void charInt(String chaine){//1044
String[] charInt = new String[2];
int count = -1;
char maxChar = 'A';
int[] letterCount = new int[26];
String word = chaine.toLowerCase();
for (int i=0;iword.length();i++) {
int indexOfChar = (byte)word.charAt(i)-97;
letterCount[indexOfChar]++;
if (letterCount[indexOfChar]count || (letterCount[indexOfChar]==countword.charAt(i)maxChar)){
count = letterCount[indexOfChar];
maxChar = word.charAt(i);
}
}
charInt[0] = String.valueOf(maxChar);
charInt[1] = ""+count;
System.out.println(charInt[0]+" "+charInt[1]);
}
public static void getDate(int n){//1047这题如果给1,其实是指2000年1月2号.
n++;
int[] getYear = getYear(n);
int year = getYear[0];
int[] getMonth = getMonth(year,getYear[1]);
int month = getMonth[0];
String monthString ;
if(month10) monthString = "0"+String.valueOf(month);
else monthString = String.valueOf(month);