代写java Person类、代做Person程序、代写JAVA Person程序

日期：2018-05-26 05:27

2. Firstly, design a class Person.

1.1)  The class contains three private fields: String name, int born, String country.

2.2)  A constructor with three arguments that construct a Person object with the specified name, born and country.

3.3)  All the get and set method for all fields.

4.4)  A toString method to print information of Person as following types Person [name=Mia, born=1978, country=Peru]

Person [name=Ziyi, born=1979, country=Japan]

Create a class Exercise2, which contains the main method. In the class we need read two files person.txt and cn_person.txt respectively. Then we should convert the type of each line in the two files to an object of Person. If a file has Chinese characters, we should use “UTF-8” as the encoding format.

Reader reader = new InputStreamReader(new FileInputStream(path),"UTF-8");

Finally, writing all objects of Person into all.txt file with a format as toString method we defined in Person class.

Tips: The data in person.txt and cn_person.txt we provided are just sample data, actually the test data maybe much larger than them and you won’t know how many lines in each one.

Sample output in console window

  Begin to read person.txt

  Finish Reading

  Begin to read cn_person.txt

  Finish Reading

  Begin to write all.txt

  Finish Writing

Sample output in all.txt

Person [name=Mia, born=1978, country=Peru] Person [name=Ziyi, born=1979, country=Japan] Person [name=Chris, born=1971, country=France] Person [name=Joe, born=1976, country=Japan] Person [name=陈坤, born=1976, country=中国] Person [name=周迅, born=1974, country=中国] Person [name=赵薇, born=1976, country=中国]

4. According to the User class given to you, design two another sub classes

named AdminUserand OrdinaryUser

Create a class named OrdinaryUser extended from User

a. Add one instance variable balance (int),which means how many

money the ordinary user has in his account.

b. Create a two-argument constructor(username password). The original

value of balance can be 0.

c. Adding a method named pay(), which is used for pay the fees for

system. When an ordinary user paid some money, his balance will be reduced.

public void pay(intmoney)

d. Adding a method named recharge(), which is used for recharging the

fees. When an ordinary user recharged some money, his balance will

public void recharge(intmoney)

e. Override toString() method by adding balance information, and not

missing the other information in super class.

Create another classnamed AdminUser extended from User

1.We also need to create constructor and toString()method as the

OrdinaryUser designed .

2.Adding a method named resetPassword(), from which an object of

be increased.

OrdinaryUser should be passed into this method, and then we should change the password of this ordinary user to “123456”

public void resetPassword(OrdinaryUserordinaryUser)

According to the main method

public static void main(String args[]){

AdminUseru1=new AdminUser("Bob","aaabbb"); OrdinaryUseru2=new OrdinaryUser("Emma","aaadddd"); System.out.println(u1.toString()); System.out.println(u2.toString()); u1.resetPassword(u2);

u2.recharge(1000);

u2.pay(200);

System.out.println(u2);

}

Sample output:

AdminUser [userId=User1, username=Bob, password=aaabbb]

OrdinaryUser [balance=0,[userId=User2, username=Emma, password=aaadddd]]

OrdinaryUser [balance=800,[userId=User2, username=Emma, password=123456]]

If we change this line tou2.pay(1200);

Sample output:

AdminUser [userId=User1, username=Bob, password=aaabbb]

OrdinaryUser [balance=0,[userId=User2, username=Emma, password=aaadddd]] balance is not enough

OrdinaryUser [balance=1000,[userId=User2, username=Emma, password=123456]]