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标题: java编程请大家帮忙看看 [打印本页]

作者: Xis 时间: 2010-3-4 12:08 AM
标题: java编程请大家帮忙看看
请大家帮我看看怎么编，如何下手。

十分感谢，如果大家可以帮忙。

public class Department
{

/**Returns the location of the department as a String
   * @return the location of the department as a String
   **/
public String getSite();

/**Returns a String representation of the department,including
   * its location and all its copiers
   * @return a String representation of the department,including
   * its location and all its copiers
   **/
public String toString();

/**Returns a String representation of the customers who have used the
   * department's services
   * @return a String representation of the customers who have used the
   * department's services
   **/
public String getAllCustomers();

// ***************** Copiers ************************
/** Allows a laser copier to be added to the department.The maximum
   * number of copies which can be done in one request for a laser
   * copier is 20.The copier's availability is set to "available"
   * @param reg represents the depratmental code of the copier
   **/

   public void addCopier(String id);


/** Allows a colour copier to be added to the department.The maximum
   * number of copies which can be done in one request for a colour
   * copier is 10.The copier's availability is set to "available"
   * @param reg represents the departmental code of the copier
   * @param photo is true if the copier can produce "photo quality" prints
   **/

   public void addCopier(String id, boolean photo);


/** Allows a plain paper copier to be added to the department. The
   * maximum number of copies allowed in one request is set from the
   * parameter value.The copier's availability is set to "available"
   * @param id represents the departmental identifier of the copier
   * @param max gives the maximum number of copies allowed in one request
   * @param make gives the copier's manufacturer
   **/
public void addCopier(String id,int max, String make);

/** Sets the contact details for the repair technician of a copier, but is
   * only used for plain paper copiers
   * @param id represents the departmental identifier of the copier
   * @param details gives the contact details for the repair technician
   */
public void setContactDetails(String id, String details);

/** Returns a String representation of all the copiers
   * @return returns a String representation of all copiers
   **/
public String getAllCopiers();

/** Returns true if the copier with the departmental identifier
   * can be found in the system, false otherwise.
   * @param depId represents the departmental identifier of the copier
   * @return returns true if the copier with the departmental identifier
   * can be found, false otherwise.
   **/
public boolean isCopier(String depId);

/** Removes a copier from the department. pre-condition: isCopier(depId)
   * @param depId represents the departmental identifier of the copier
   **/
public void removeCopier(String depId);

//**************************************************************
/** Adds a request to the request list if it is possible.Requests for more than
   * 20 copies which require either high quality or colour are not
   * possible.If not possible "Request not possible" is returned.Requests
   * which are possible are number sequentially from 100 and the
   * customer added to a set of customers.If a suitable copier is
   * available,the state of the request is set to "printing",the selected
   * copier is added to the request and the copier's state is set to "in
   * use".If a copier is not available, request's state is set to "waiting".If
   * a suitable copier cannot be found,"Request waiting" is returned,
   * other wise "Request ready for printing on:" with the copier details.
   * @cust is the name of the customer
   * @staff indicates whether the customer is a member of staff
   * @number is either department number if staff, or student number,if student
   * @pages is the number of pages in the documents
   * @copies is the number of copies required
   * @param col indicates whether colour is required
   * @param hQuality indicates whether high quality is required
   * @param dsided indicates whether double-sided is required
   * @return returns "Request not possible"if the request is not possible,
   * "Request waiting" if no copier is available, else "Request ready for
   * printing on:" together with the copier details
   **/
   public String addRequest(String cust,boolean staff,int number,int pages,
         int copies, boolean hQuality, boolean col, boolean dsided);


/** Provides a String representation of all requests
   * @return returns a String representation of of all requests
   **/
public String getAllRequests();

/** Provides a String representation of all requests which are
   * still waiting for printing
   * @return returns a String representation of all requests which are
   * still waiting for printing
   **/
public String getRequestsWaiting();

/** records that the request specified by the parameter value has been
   * done.If the request cannot be found return -1.If the request can be
   * found,the state of the request is set to "done" ,the state of its
   * copier is set to "available" and 0 is returned.
   **/
public int setRequestDone(int jNo);

/** Returns the cost of request specified by the parameter value once a
   * has been printed.If the request cannot be found or the printing has
   * not been done return -1.Copies printed on colour copiers are charged
   * at 15p per copy per page.A laser printed copy costs 6p per copy per
   * page (whether double-sided or not)and plain paper copy 4p per copy per
   * page,unless the printing is double-sided in which case the cost is
   * 3p per copy per page.There is a set up cost of � per request with an
   * additional single cost of � for colour.
   *
   * @param requestNo is the number of the request
   * @return the cost of a request calculated as described above
   **/
public double getRequestCost(int jNo);


/** Checks the list of requests and returns the request number of the first
   * request for which a printer is now available.If such a request is found,
   * the state of the request is set to "printing", the selected copier is
   * added to the request information and the copier's state is set to
   * "in use"and the request number is returned.If there no such requests,
   * return -1
   **/
public int checkforRequestsWaiting();

// *************** file write/read  *********************
// Methods required for Task 5 ONLY - not required for the demo
// If you do not implement these, just comment them out

/** Writes all requests to the specified file
   * @param fname name of file storing requests
   */
public void writeRequestsToFile(String fname);

/** reads all requests from the specified file and stores
   * @param fname name of file storing requests
   */
public void readRequestsFromFile(String fname);

/** reads data about copiers from a text file and stores in collection of
   * copiers.Data in the file is  "comma separated" and so editable
   * @param fileName name of the file to be read
   */
public void initialiseCopiersFromFile(String fileName);

/** writes data about copiers to a text file from collection of
   * copiers.Data in the file is to be "comma separated" and so editable
   * @param fileName name of the file to which copiers are written
   */
public void saveCopiersToFile(String fileName);

}

作者: Xis 时间: 2010-3-4 12:09 AM
标题: 复印机的位子在Hendon

作者: Super-Tomato 时间: 2010-3-4 01:23 AM

原帖由 Xis 于 2010-3-4 12:08 AM 发表
请大家帮我看看怎么编，如何下手。

十分感谢，如果大家可以帮忙。

public class Department
{

/**Returns the location of the department as a String
* @return the location ...

貼出了 interface 然後呢?? 是要我們幫你寫 method 嗎??

作者: Xis 时间: 2010-3-4 05:28 AM
标题: 回复 #3 Super-Tomato 的帖子
是的，如果能的话最好了。

这是作业的一部分（最基本的）我刚刚学java所以不是很明白怎么去写。

十分感谢。

作者: Super-Tomato 时间: 2010-3-4 01:36 PM

原帖由 Xis 于 2010-3-4 05:28 AM 发表
是的，如果能的话最好了。

这是作业的一部分（最基本的）我刚刚学java所以不是很明白怎么去写。

十分感谢。

那麼我只能說 "天下沒有白吃的午餐", 所以目前就只有兩條路
1. 儘早轉科系
2. 動手做, 不明白的才翻書或提問而不是要求別人代勞

作者: 宅男-兜着走 时间: 2010-3-4 03:34 PM
标题: 回复 #4 Xis 的帖子
已经给你了需要什么 param ，return 什么东西回去了。

不需要人家教了吧～你现在最主要就是懂 method 里面怎么code 罢了。

一定是上课没听课的了。

加油

作者: duo8668 时间: 2010-3-4 04:53 PM

原帖由 Super-Tomato 于 2010-3-4 01:23 AM 发表

貼出了 interface 然後呢?? 是要我們幫你寫 method 嗎??

他这个好像连interface都不是

看起来就是。。。class diagram 的 code 版

作者: Xis 时间: 2010-3-4 06:12 PM
标题: 回复 #6 宅男-兜着走的帖子
是的，我就是不太明白 method 应该怎么写，我是半路加进班的，所以method 不太明白怎么写。

请赐教！谢谢

作者: Xis 时间: 2010-3-4 06:22 PM
我是半路加进班的，所以基础的东西不太明白，请大家指点一下method怎么写，尤其是开头，请赐教开始的几个method怎么写。之后我会自己努力的。

感谢大家来看我的帖子。

作者: 宅男-兜着走 时间: 2010-3-4 08:28 PM
标题: 回复 #9 Xis 的帖子
你自己思考下吧。

customOperation.java

class CustomOperation {
// method 里面能 code 你的东西。如果你再不会的话。拜托你从基本的java 开始学起。
public int AddNumber(int num1 , int num2){
return num1 + num2;
}
public bool IsZero(int num){
return num == 0;
}
public int MulNumber(int num1, int num2){
return num1 * num2;
}
}

复制代码

main.java

public class testing{
public static void main(string[] args){
CustomOperation co = new CustomOperation(); // 你可以declare 先。
int result = co.AddNumber(10 , 10);
// output 是20
if(co.isZero(result)){
System.out.println("this result is zero");
}
// testing 看看 call is zero method ，如果是 0 ，那么就会return true
int mulResult = co.MulNumber(1 , 20);
// output 是20
}
}

复制代码

其实说到来，这个也不算什么基本。

http://java.sun.com/docs/books/tutorial/java/javaOO/methods.html

同样的问题，很多人都问过了。有时你应该自己上 google 查查看。

PS: 可能会有 syntax 的 error ，因为我现在没篇写工具 ==

[ 本帖最后由宅男-兜着走于 2010-3-4 08:32 PM 编辑 ]

作者: Super-Tomato 时间: 2010-3-5 01:06 AM

原帖由 duo8668 于 2010-3-4 04:53 PM 发表

他这个好像连interface都不是
看起来就是。。。class diagram 的 code 版

對，因為没宣告 class 为 interface, 以上是樓主的老師帮他們開個頭方便他們只要写出實作，所以我選擇最贴切的型态称呼

原帖由 Xis 于 2010-3-4 06:22 PM 发表
我是半路加进班的，所以基础的东西不太明白，请大家指点一下method怎么写，尤其是开头，请赐教开始的几个method怎么写。之后我会自己努力的。

感谢大家来看我的帖子。

雖然不知道你甚么原因而選擇插班到這個科系，但還是多到 Sun 网站去了解 Java 和看看里面基本的教學打好基楚

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