1.编写“人”类及其测试类。属性：姓名、性别、年龄、身份证号码。

package com.wsy.person;public class Person {    private String name ;    private char sex;    private int age;    private String IDCardNumber;        public Person(String name, char sex, int age, String IDCardNumber) {                this.name = name;        this.sex = sex;        this.age = age;        this.IDCardNumber = IDCardNumber;    }    public void print()     {        System.out.println("姓名："+name);        System.out.println("性别："+sex);        System.out.println("年龄："+age);        System.out.println("身份证号码："+IDCardNumber);    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public char getSex() {        return sex;    }    public void setSex(char sex) {        this.sex = sex;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public String getIDCardNumber() {        return IDCardNumber;    }    public void setIDCardNumber(String iDCardNumber) {        IDCardNumber = iDCardNumber;    }    }

package com.wsy.person;public class TestPerson {    public static void main(String[] args) {        Person p1 = new Person("张三",'男',18,"430101010101010101");        Person p2 = new Person("李四",'女',18,"123456789009876543");        p1.print();        p2.print();    }}

2.编写“手机”类及其测试类。属性：手机品牌、手机型号。

package FengZhuang;import java.util.Scanner; class Phone {     String Phonebrand;  /*手机品牌*/     String Phonemodel;  /*手机型号*/   public void printf()   {      System.out.print("该手机的品牌是："+Phonebrand+"  ");      System.out.println("手机型号是："+Phonemodel);   }        public Phone(String Phonebrand,String Phonemodel)      {         this.Phonebrand=Phonebrand;         this.Phonemodel=Phonemodel;     } }public class TestPhone {    public static void main(String[] args)    {           Scanner in=new Scanner(System.in);          String Phonebrand,Phonemodel;          System.out.println("请输入手机品牌和型号：");          Phonebrand=in.next();          Phonemodel=in.next();         Phone object= new Phone(Phonebrand,Phonemodel);         object.printf();    }}

另外的搞不懂了~~