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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
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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;
}
}
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());
}
}
}
代码如下：
package com.sxl.gd.test;
public class Array {
private int []a = {1,2,3,4,5,6};
private int x1,x2,x3,x4,x5,x6;
private void aver() {
int sum = 0;
for(int i=0;ia.length;i++) {
sum+=a[i];
}
System.out.println("平均数是："+(double)sum/(double)a.length);
}
public Array() {}
public Array(int x1,int x2,int x3,int x4,int x5,int x6) {
a[0] = x1;
a[1] = x2;
a[2] = x3;
a[3] = x4;
a[4] = x5;
a[5] = x6;
}
private void min() {
int min = a[0];
for(int i=1;ia.length;i++) {
if(a[i]min) {
int temp;
temp = a[i];
a[i]=min;
min = temp;
}
}
System.out.println("最小值是："+min);
}
private void max() {
int max = a[0];
for(int i=1;ia.length;i++) {
if(a[i]max) {
int temp;
temp = a[i];
a[i]=max;
max = temp;
}
}
System.out.println("最大值是："+max);
}
public static void main(String[] args) {
Array array1 = new Array();
array1.aver();
array1.max();
array1.min();
Array array2 = new Array(6,2,8,4,1,7);
array2.aver();
array2.max();
array2.min();
}
}
运行结果如下：
class Person{
string name;
int age;
string address;
public String toString(){
return "姓名："+name+" 家庭住址："+address+" 年龄:"+age;
}
public Person(string name,int age,string address){
this.name = name;
this.age = age;
this.address = address;
}
}
class Employee extends Person{
int num;
public Employee(string a,int b,string c,int n){
name = a;
age = b;
address = c;
num = n;
}
}
class Student extends Person{
public Student(string a,int b,string c){
name = a;
age = b;
address = c;
}
}
public class
代码
或者：
package com.xinhua.test2;
public class Student {
int sno;
String name;
double chiness;
double math;
double english;
double three_sco;
double all_s;
public Student(int sno, String name, double chiness, double math, double english, double three_sco) {
this.sno = sno;
this.name = name;
this.chiness = chiness;
this.math = math;
this.english = english;
this.three_sco = three_sco;
}
@Override
public String toString() {
return "学号：" + sno + ", 名字：" + name + ", 语文成绩：" + chiness + ", 数学成绩：" + math + ", 英语成绩："
+ english + "总成绩："+(chiness+math+english+three_sco);
}
public static void main(String[] args) {
Student A=new Student(1, "张三", 118, 145, 114.5, 198);
Student B=new Student(2, "李四", 130,110.5,100,210);
Student C=new Student(3, "王五",142.5,120,87.5,245.5);
System.out.println("学生列表信息为：");
System.out.println(A.toString());
System.out.println(B.toString());
System.out.println(C.toString());
//
double a_scoAll=A.chiness+A.math+A.english+A.three_sco;
A.all_s=a_scoAll;
double b_scoAll=B.chiness+B.math+B.english+B.three_sco;
B.all_s=b_scoAll;
double c_sclAll=C.chiness+C.math+C.english+C.three_sco;
C.all_s=c_sclAll;
Student[] s_s={A,B,C};
System.out.println("按总成绩从大到小排序为");
Student temp;
for(int i=0;is_s.length;i++){
for(int j=1;js_s.length-i;j++){
if(s_s[j-1].all_s s_s[j].all_s){
temp=s_s[j-1] ;
s_s[j-1] =s_s[j];
s_s[j]=temp;
}
}
}
for(int i=0;is_s.length;i++){
System.out.println("第"+(i+1)+"名为："+s_s[i].toString());
}
}
}
望采纳
最简单的java代码肯定就是这个了，如下：
public class MyFirstApp
{
public static void main(String[] args)
{
System.out.print("Hello world");
}
}
“hello world”就是应该是所有学java的新手看的第一个代码了。如果是零基础的新手朋友们可以来我们的java实验班试听，有免费的试听课程帮助学习java必备基础知识，有助教老师为零基础的人提供个人学习方案，学习完成后有考评团进行专业测试，帮助测评学员是否适合继续学习java，15天内免费帮助来报名体验实验班的新手快速入门java，更好的学习java！