育才学习网1. 请教java类的写法
package test;
import java.util.ArrayList;
import java.util.List;
public class Test {
public static void main(String[] args) throws Exception{
Listlist=new ArrayList();
list.add(new NonSpecialist("001","Jackson","USA"));
list.add(new Specialist("002","Rachel","China"，"外科")）；
for (int i = 0; i System.out.println(list.get(i));
System.out.println("---------------");
}
}
}
class Docter{
public String name;
public String idNumber;
public String address;
public Docter(String name, String idNumber, String address) {
this.name = name;
this.idNumber = idNumber;
this.address = address;
}
public Docter(){}
}
class NonSpecialist extends Docter{
public NonSpecialist(String name, String idNumber, String address) {
super(name, idNumber, address);
}
public String toString() {
return "非专业医生信息\n编号："+idNumber+"\n姓名："+name+"\n地址："+address;
}
}
class Specialist extends Docter{
public Specialist(String name, String idNumber, String address,String speciality) {
super(name, idNumber, address);
this.speciality=speciality;
}
public Specialist() {
super();
}
public String speciality;
public String getSpeciality() {
return "专业："+speciality;
}
public String toString() {
return "专业医生信息\n编号："+idNumber+"\n姓名："+name+"\n地址："+address+"\n"+getSpeciality();
}
}
2. java写一个类
(1)public class M{ public static void main(String args[]) { Students stu1=new Students("Ni",25); Students stu2=new Students("Wo",30); stu1.toString(); stu2.toString(); if(stu1.equals(stu2)) System.out.print("they are equal"); }}class Students{ public String name; public int age; Students(String name,int age) { this.name=name; this.age=age; } public String toString() { String str="name is :"+name+'\n'+"age is :"+age; System.out.println(str); return str; } public boolean equals(Students stu) { if((this.name==stu.name)&&(this.age==stu.age)) return true; else return false; }}(2)import java.util.*;import java.io.*;public class N{ public static void main(String args[]) throws IOException { Scanner sc=new Scanner(System.in); System.out.println（"请输入一个字符串："）； String str=sc.next(); //String str1=new String() if(str.equals("male")) System.out.println("you are a boy!"); else if(str.equals("female")) System.out.println("you are a girl!"); else System.out.println("you are wrong!!"); }}。
3. 用Java语言写一个类
//Student类public class Student{ String stunum; int stuage; String stuname; String stuclass; public String getStunum() { return stunum; } public void setStunum(String stunum) { this.stunum = stunum; } public int getStuage() { return stuage; } public void setStuage(int stuage) { this.stuage = stuage; } public String getStuname() { return stuname; } public void setStuname(String stuname) { this.stuname = stuname; } public String getStuclass() { return stuclass; } public void setStuclass(String stuclass) { this.stuclass = stuclass; } public void disp(Student st){ System.out.println（"该学生的学号为："+st.getStunum（)+"，他的年龄是"+st.getStuage（)+"，他叫"+st.getStuname（)+"，在"+st.getStuclass（)+"班"）； }}//Test类public class Test { public static void main(String[] args) { Student st = new Student(); st.setStuage(21); st.setStuclass("12"); st.setStuname("Tom"); st.setStunum("20100327"); st.disp(st)； }} 展开。
4. java写一个类
(1)
public class M
{
public static void main(String args[])
{
Students stu1=new Students("Ni",25);
Students stu2=new Students("Wo",30);
stu1.toString();
stu2.toString();
if(stu1.equals(stu2))
System.out.print("they are equal");
}
}
class Students
{
public String name;
public int age;
Students(String name,int age)
{
this.name=name;
this.age=age;
}
public String toString()
{
String str="name is :"+name+'\n'+"age is :"+age;
System.out.println(str);
return str;
}
public boolean equals(Students stu)
{
if((this.name==stu.name)&&(this.age==stu.age))
return true;
else
return false;
}
}
(2)
import java.util.*;
import java.io.*;
public class N
{
public static void main(String args[]) throws IOException
{
Scanner sc=new Scanner(System.in);
System.out.println（"请输入一个字符串："）；
String str=sc.next();
//String str1=new String()
if(str.equals("male"))
System.out.println("you are a boy!");
else if(str.equals("female"))
System.out.println("you are a girl!");
else
System.out.println("you are wrong!!");
}
}
5. JAVA写一个类.
public class Rectangle { private int length; private int width; public Rectangle() { } public Rectangle(int length, int width) { this.length = length; this.width = width; } public int getLength() { return length; } public void setLength(int length) { this.length = length; } public int getWidth() { return width; } public void setWidth(int width) { this.width = width; } public String toString() { return "长度：" + length + "宽度：" + width; } public void perimeter() { System.out.println（"周长是"+（length + width） * 2); } public void area() { System.out.println（"面积是："+length * width）; } public static void main(String[] args) { Rectangle r=new Rectangle(100,200); System.out.println(r); r.perimeter(); r.area(); }}。
6. java 写 类 写 方法
学生类：public class Student { public String StudentNumber; public String StudentName; public Student(String StudentNumber, String StudentName){ this.StudentNumber = StudentNumber; this.StudentName = StudentName; } public void attendClass(){ System.out.println(StudentName + "上课")； } public void finishClass(){ System.out.println(StudentName + "下课")； }}测试类：public class TestStudent { public static void main(String[] args) { // TODO Auto-generated method stub Student s1 = new Student("NY1001", "TOM"); Student s2 = new Student("NY1002", "JERRY"); s1.attendClass(); s1.finishClass(); s2.attendClass(); s2.finishClass（)； }}测试结果：TOM上课TOM下课JERRY上课JERRY下课。
