求救JAVA

湘伦小雨 · 发表于 21-6-2010 09:55 AM

因我的PROGRAM 太多ERROR............
请求高手帮忙.
谢谢!!!!!!!!!!!!!!!

import java.awt.*;
import java.util.*;
import javax.swing.*;
public class Asset{
//********************************************************************************
//DECLARATION OF OBJECT PROPERTIES
private String assetid;
private String description;
private String datepurchased;
private String ordernumber;
private String costprice;
//DEFAULT CONSTRUCTOR
//********************************************************************************
//SETTER METHOD
public void setassetid(String a)
{
}
//*************************************
public void setdescription(String b)
{
}
//*************************************
public void setdatepurchased(String c)
{
}
//*************************************
public void setordernumber(String d)
{
}
//*************************************
public void setcostprice(String e)
{
}
//**********************************************************************************
//GETTER METHOD
public String getassetid()
{
}
//*************************************
public String getdescription()
{
}
//*************************************
public String getdatepurchased()
{
}
//*************************************
public String getordernumber()
{
}
//*************************************
public String getcostprice()
{
}
/*
EQUALS IS A METHOD THAT RETURN TRUE WHEN
BOTH OBJECT CONTAIN SAME INFORMATION
*/
//***********************************************************************************

复制代码

湘伦小雨 · 发表于 21-6-2010 09:56 AM

public static boolean equal(item a,item b)
{
/*
CHECK WHETHER (item a) IS EQUAL TO (item b)
DEFAULT IMPLEMENTATION IS
public boolean equals(object a)
{
return(this==a)
}
*/
if(a.getassetid().equals(b.getassetid())==true
& a.getdescription().equals(b.getdescription())==true
& a.getdatepurchased().equals(b.getdatepurchased())==true
& a.getordernumber().equals(b.getordernumber())==true
& a.getcostprice().equals(b.getcostprice())==true)
{
return true;//TRUE BECAUSE ALL THE CONTENT ARE THE SAME
}
else
{
return false;//FALSE BECAUSE ONE OR MORE CONTENT ARE DEFFERENT
}
/*
MAKECOPY IS A METHOD THAT COPIES AN
INSTANCE VARIABLE OF AN OBJECT TO ANOTHER OBJECT
*/
//***********************************************************************************
public void makecopy(item c)
{
/*
STORE (item c) INFORMATION INTO THE NEW OBJECT
USE temp AS A BRIDGE TO TRANSFER INFORMATION
IF DID NOT USE temp AS A BRIDGE,
VALIDATION WILL HAVE RUN TIME ERROR
*/
//*********************************
String temp1=c.getassetid();
this.setassetid(temp1);
//*************************************
String temp2=c.getdescription();
this.setdescription(temp2);
//*************************************
String temp3=c.getdatepurchased();
this.setdatepurchased(temp3);
//*************************************
String temp4=c.getordernumber();
this.setordernumber(temp4);
//*************************************
String temp4=c.getcostprice();
this.setcostprice(temp4);
}
public class function
{
/*GENERATE A TABLE TO DISPLAY ARRAY OF OBJECT ITEM*/
public void generatetable(item[] p)
{
Object[][] obj=new object[p.length][8];
JFrame frame=new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//STORE ARRAY OF OBJECT CONTENT
for(int i=0;i<p.length;i++)
{
////////////////////////////////////////////////////////
obj[0]=i+1;
obj[1]=p.getassetid();//asset id
obj[2]=p.getdescription();//description
obj[3]=p.getdatepurchased();// date purchased
obj[4]=p.getordernumber();//asset number
obj[5]=p.getcostprice();//cost price
////////////////////////////////////////////////////////
}
//**********************************************************************************
//FIELD ALIGMENT TO MATCH CONTENT
Object columNames[]={
"no.","asset id","description","date purchased","order number","cost price"};
JTable table =new JTable(obj,columnNames);
JscrollPane scrollPane=new JscrollPane(table);
frame.add(scrollpane,BorderLayout.CENTER);
frame.setSize(640,480);
frame.setvisible(true);
}

复制代码

湘伦小雨 · 发表于 21-6-2010 09:56 AM

//SEARCH THE ARRAY OF ITEM FOR THE SAME NAME

public int searchitemname(String name,item[] p)
{
      for(int i=0;i<p.length;i++)
      {
//////////////////////////////////////////////////////////////////////
            if(name.equals(p.getassetid())==true)
            {
                     return i;//THE INDEX OF THE NAME
            }
///////////////////////////////////////////////////////////////////////
      }
      return -1;//NO SAME INDEX WITH THE SAME NAME
      }
}
//****************************************************************************************
public static void main(String[] args)
{
      int choice=0;
      int i;
      string temp;//TO BE USED AS A BRIDGE TO TRANSFER INFORMATION

      //ARRAY OF ITEM DECLARATION

      item[]arrayitem=new item[100];
      for(i=0;i<arrayitem.length;i++)
      {
/////////////////////////////////////////////
            arrayitem=new item();
////////////////////////////////////////////
      }
      //ASSIGNING VALUE BY USING SETTER

      for(i=0;i<arrayitem.length;i++)
      {
/////////////////////////////////////////////////////////////////////////////////
            arrayitem.setassetid(arrayitem.getassetid());
            arrayitem.setdescription(arrayitem.getdescription());
            arrayitem.setdatepurchased(arrayitem.getdatepurchased());
            arrayitem.setordernumber(arrayitem.getordernumber());
            arrayitem.setcostprice(arrayitem.getcostprice());
///////////////////////////////////////////////////////////////////////////////
      }

      int count=i;//COUNT IS FOR THE NEXT ATENDEE
      Scanner s=new Scanner(System.in);//TO GET USER INPUT
      do
      {
//***************************************************************************
      //MENU
      screen.main();
      System.out.println("********MENU********************\n");
      System.out.println("<1>---<>ADD NEW ASSET---------<>");
      System.out.println("<2>---<>SEARCH FOR ASSET------<>");
      System.out.println("<3>---<>LIST ITEM INFORMATION-<>");
      System.out.println("<4>---<>EXIT------------------<>");
      System.out.println("********************************\n");
      System.out.println("ENTER CHOICE---<> ");
      choice=s.nextIn();
      switch(choice)
      {
//*********************************************************************
case 1:
{

      /*CHECK WHETHER THIS ATENDEE IS A DUPLICATE ENTRY OR NOT
      IF NOT DUPLICATE ENTRY THEN ADD THE ATENDEE TO THE LIST*/
      //************************************************************

      //GET ITEM ID
      System.out.println("ENTER ASSET ID---<> ");
      temp=s.next();
      arrayitem.[count].setassetid(temp);

      //************************************************************
      //GET DESCRIPTION
      System.out.println("ENTER DESCRIPTION---<> ");
      temp=s.next();
      arrayitem.[count].setdescription(temp);

      //************************************************************
      //GET DATE PURCHASED
      System.out.println("ENTER DATE PURCHASED---<> ");
      temp=s.next();
      arrayitem.[count].setdatepurchased(temp);

      //************************************************************
      //GET ORDER NUMBER
      System.out.println("ENTER ORDER NUMBER---<> ");
      temp=s.next();
      arrayitem.[count].setordernumber(temp);

      //************************************************************

      //GET COST PRICE
      System.out.println("ENTER COST PRICE---<> ");
      temp=s.next();
      arrayitem.[count].setcostprice(temp);

      //*****************************************************************************

      /*CHECK WHETHER ANY OF THE PREVIOUS ITEM HAVE SAME INFORMATION OR NOT
      IF DUPLICATE ENTRY FOUND,ERROR MESSAGE WILL BE PRINTED AND COUNT WILL MINUS 1
      SO WHEN THE NEXT ATENDEE ENTER HIS/HER INFORMATION,
      THE INFORMATION WILL BE AT THE LAST DUPLICATE ENTRY
      IF THE ATENDEE IS UNIQUE THE COUNT WILL PLUS 1*/

      //*****************************************************************************
      for(i=0;i<=count;i++)
      {
/////////////////////////////////////////////////////////////////////////////////////////
            if(item.Equals(arrayitem[count],arrayitem)==true)
            {
                     System.out.println("DUPLICATION ENTRIES ARE NOT ALLOWED");
                     break;
            }
////////////////////////////////////////////////////////////////////////////////////////
      }
      count++;
      break;
}

//***************************************************************************************
case 2:
{

      /*CHECK WHETHER NAME OF THIS ITEM EXIST
      IF EXIST THEN PRINT OUT THE DETAILS*/

      //GET THE NAME OF THE USER WANT TO SEARCH

      System.out.println("ENTER THE ASSET ID YOU WISH TO SEARCH---<> ");
      temp=s.next();
      int match=function.searchitemname(temp,arrayitem);

/////////////////////////////////////////////////////////////////////////////////
      if(match<=0)
      {
            System.out.println("arrayitem[match].getassetid());
            System.out.println("arrayitem[match].getdescription());
            System.out.println("arrayitem[match].getdatepurchased());
            System.out.println("arrayitem[match].getordernumber());
            System.out.println("arrayitem[match].getcostprice());
      }

////////////////////////////////////////////////////////////////////////////////////

      else
      {
            System.out.println("NO ITEM NAME "+temp+"ON THE LIST");
      }
      break;
}

//***********************************************************************************

case 3:
{

      //LIST ALL THE ATENDEE IN A TABLE
///////////////////////////////////////////////////////////////////
      function.generateTable(arrayitem);
      break;

///////////////////////////////////////////////////////////////////
}
}

//***********************************************************************************

      item a=new item();
      a.setassetid("1234");
      a.setdescription("electonic");
      a.setdatepurchased("2010-01-01");
      a.setordernumber("5201314");
      a.setcostprice("RM 100.00");

      item b=new item();
      b.makeCopy(a);
      boolean c=item.Equals(a,b);
      System.out.println(c);
      System.out.println(b.assetid());
      System.out.println(b.description());
      System.out.println(b.datepurchased());
      System.out.println(b.ordernumber());
      System.out.println(b.costprice());
}while(choice!=4);
}
}
//END

湘伦小雨 · 发表于 21-6-2010 09:57 AM

这些代码都是LINK 的.请帮忙修改.谢谢.

兔仙人 · 发表于 21-6-2010 12:00 PM

Item 是你另外一个 CLASS 吗？
------------------------------------------------------------------------------
      String temp4=c.getordernumber();
      this.setordernumber(temp4);

      //*************************************
      String temp4=c.getcostprice();
      this.setcostprice(temp4);

重复了。。。

------------------------------------------------------------------------------
Object[][] obj=new object[p.length][8];  // new Object

------------------------------------------------------------------------------

obj[0]=i+1; // new Integer[] {i+1}

------------------------------------------------------------------------------

Object columNames[]={
      "no.","asset id","description","date purchased","order number","cost price"};

JTable table =new JTable(obj,columnNames); // columName ??? columnName ???

------------------------------------------------------------------------------

JscrollPane scrollPane=new JscrollPane(table); // JScrollPane

------------------------------------------------------------------------------

public int searchitemname(String name,item[] p) // 请注意你的 item是什么 .

------------------------------------------------------------------------------

qiqimon5566 · 发表于 21-6-2010 08:04 PM

这是tarc的assignment
和我上次刚贴的一样 @_@

湘伦小雨 · 发表于 23-6-2010 09:46 PM

Item 是你另外一个 CLASS 吗？
------------------------------------------------------------------ ...
兔仙人发表于 21-6-2010 12:00 PM

好像没有改到？？？

兔仙人 · 发表于 24-6-2010 12:07 PM

我不懂你的 ITEM 是什么 ?

loonloon0625 · 发表于 24-6-2010 05:44 PM

本帖最后由 loonloon0625 于 24-6-2010 05:47 PM 编辑

import java.awt.*;
import java.util.*;
import javax.swing.*;
public class Asset{
//********************************************************************************
//DECLARATION OF OBJECT PROPERTIES
private String assetid;
private String description;
private String datepurchased;
private int ordernumber;
private double costprice;
//DEFAULT CONSTRUCTOR
//********************************************************************************
//SETTER METHOD
public void setassetid(String a)
{
assetid = a;
}
//*************************************
public void setdescription(String b)
{
description = b;
}
//*************************************
public void setdatepurchased(String c)
{
datepurchased = c;
}
//*************************************
public void setordernumber(int d)
{
ordernumber = d;
}
//*************************************
public void setcostprice(double e)
{
costprice = e;
}
//**********************************************************************************
//GETTER METHOD
public String getassetid()
{
return assetid;
}
//*************************************
public String getdescription()
{
return description;
}
//*************************************
public String getdatepurchased()
{
return datepurchased;
}
//*************************************
public int getordernumber()
{
return ordernumber;
}
//*************************************
public double getcostprice()
{
return costprice;
}
/*
EQUALS IS A METHOD THAT RETURN TRUE WHEN
BOTH OBJECT CONTAIN SAME INFORMATION
*/
//***********************************************************************************
public static boolean equal(Asset a, Asset b)
{
/*
CHECK WHETHER (item a) IS EQUAL TO (item b)
DEFAULT IMPLEMENTATION IS
public boolean equals(object a)
{
return(this==a)
}
*/
if(a.getassetid().equals(b.getassetid())==true
& a.getdescription().equals(b.getdescription())==true
& a.getdatepurchased().equals(b.getdatepurchased())==true
& a.getordernumber() == b.getordernumber()==true
& a.getcostprice() == b.getcostprice() ==true)
{
return true;//TRUE BECAUSE ALL THE CONTENT ARE THE SAME
}else{
return false;//FALSE BECAUSE ONE OR MORE CONTENT ARE DEFFERENT
}
}
/*
MAKECOPY IS A METHOD THAT COPIES AN
INSTANCE VARIABLE OF AN OBJECT TO ANOTHER OBJECT
*/
//***********************************************************************************
public void makecopy(Asset c)
{
/*
STORE (item c) INFORMATION INTO THE NEW OBJECT
USE temp AS A BRIDGE TO TRANSFER INFORMATION
IF DID NOT USE temp AS A BRIDGE,
VALIDATION WILL HAVE RUN TIME ERROR
*/
//*********************************
String temp1=c.getassetid();
this.setassetid(temp1);
//*************************************
String temp2=c.getdescription();
this.setdescription(temp2);
//*************************************
String temp3=c.getdatepurchased();
this.setdatepurchased(temp3);
//*************************************
int temp4=c.getordernumber();
this.setordernumber(temp4);
//*************************************
double temp5=c.getcostprice();
this.setcostprice(temp5);
}
public class function
{
/*GENERATE A TABLE TO DISPLAY ARRAY OF OBJECT ITEM*/
public void generatetable(Asset[] p)
{
Object[] obj = new Object[p.length];
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//STORE ARRAY OF OBJECT CONTENT
for(int i=0;i<p.length;i++)
{
////////////////////////////////////////////////////////
obj[0] = p.getassetid();//asset id
obj[1] = p.getdescription();//description
obj[2] = p.getdatepurchased();// date purchased
obj[3] = p.getordernumber();//asset number
obj[4] = p.getcostprice();//cost price
////////////////////////////////////////////////////////
}
//**********************************************************************************
//FIELD ALIGMENT TO MATCH CONTENT
Object columNames[]={
"no.","asset id","description","date purchased","order number","cost price"};
JTable table = new JTable((Object[][]) obj,columNames);
JScrollPane scrollPane = new JScrollPane(table);
frame.add(scrollPane,BorderLayout.CENTER);
frame.setSize(640,480);
frame.setVisible(true);
}
//SEARCH THE ARRAY OF ITEM FOR THE SAME NAME
public int searchitemname(String name, Asset[] p)
{
for(int i=0;i<p.length;i++)
{
//////////////////////////////////////////////////////////////////////
if(name.equals(p.getassetid())==true)
{
return i;//THE INDEX OF THE NAME
}
///////////////////////////////////////////////////////////////////////
}
return -1;//NO SAME INDEX WITH THE SAME NAME
}
}

复制代码

loonloon0625 · 发表于 24-6-2010 05:44 PM

本帖最后由 loonloon0625 于 24-6-2010 05:46 PM 编辑

//****************************************************************************************
public static void main(String[] args)
{
int choice=0;
int i;
//ARRAY OF ITEM DECLARATION
Asset[] arrayitem = new Asset[100];
for(i=0; i < arrayitem.length;i++)
{
/////////////////////////////////////////////
arrayitem = new Asset();
////////////////////////////////////////////
}
//ASSIGNING VALUE BY USING SETTER
for(i=0;i<arrayitem.length;i++)
{
/////////////////////////////////////////////////////////////////////////////////
arrayitem.setassetid(arrayitem.getassetid());
arrayitem.setdescription(arrayitem.getdescription());
arrayitem.setdatepurchased(arrayitem.getdatepurchased());
arrayitem.setordernumber(arrayitem.getordernumber());
arrayitem.setcostprice(arrayitem.getcostprice());
///////////////////////////////////////////////////////////////////////////////
}
int count= 0;//COUNT IS FOR THE NEXT ATENDEE
Scanner s=new Scanner(System.in);//TO GET USER INPUT
do
{
//***************************************************************************
//MENU
System.out.println("********MENU********************\n");
System.out.println("<1>---<>ADD NEW ASSET---------<>");
System.out.println("<2>---<>SEARCH FOR ASSET------<>");
System.out.println("<3>---<>LIST ITEM INFORMATION-<>");
System.out.println("<4>---<>EXIT------------------<>");
System.out.println("********************************\n");
System.out.println("ENTER CHOICE---<> ");
choice=s.nextInt();
switch(choice)
{
//*********************************************************************
case 1:
{
/*CHECK WHETHER THIS ATENDEE IS A DUPLICATE ENTRY OR NOT
IF NOT DUPLICATE ENTRY THEN ADD THE ATENDEE TO THE LIST*/
//************************************************************
//GET ITEM ID
System.out.println("ENTER ASSET ID---<> ");
String temp=s.next();
arrayitem[count].setassetid(temp);
//************************************************************
//GET DESCRIPTION
System.out.println("ENTER DESCRIPTION---<> ");
temp=s.next();
arrayitem[count].setdescription(temp);
//************************************************************
//GET DATE PURCHASED
System.out.println("ENTER DATE PURCHASED---<> ");
temp = s.next();
arrayitem[count].setdatepurchased(temp);
//************************************************************
//GET ORDER NUMBER
System.out.println("ENTER ORDER NUMBER---<> ");
int n = s.nextInt();
arrayitem[count].setordernumber(n);
//************************************************************
//GET COST PRICE
System.out.println("ENTER COST PRICE---<> ");
double c =s.nextDouble();
arrayitem[count].setcostprice(c);
//*****************************************************************************
/*CHECK WHETHER ANY OF THE PREVIOUS ITEM HAVE SAME INFORMATION OR NOT
IF DUPLICATE ENTRY FOUND,ERROR MESSAGE WILL BE PRINTED AND COUNT WILL MINUS 1
SO WHEN THE NEXT ATENDEE ENTER HIS/HER INFORMATION,
THE INFORMATION WILL BE AT THE LAST DUPLICATE ENTRY
IF THE ATENDEE IS UNIQUE THE COUNT WILL PLUS 1*/
//*****************************************************************************
for(i=0;i<=count;i++)
{
/////////////////////////////////////////////////////////////////////////////////////////
if(Asset.equal(arrayitem[count],arrayitem[count])==true)
{
System.out.println("DUPLICATION ENTRIES ARE NOT ALLOWED");
break;
}
////////////////////////////////////////////////////////////////////////////////////////
}
count++;
break;
}
//***************************************************************************************
case 2:
{
/*CHECK WHETHER NAME OF THIS ITEM EXIST
IF EXIST THEN PRINT OUT THE DETAILS*/
//GET THE NAME OF THE USER WANT TO SEARCH
System.out.println("ENTER THE ASSET ID YOU WISH TO SEARCH---<> ");
String temp =s.next();
//int match = function.searchitemname(temp,arrayitem);
/////////////////////////////////////////////////////////////////////////////////
/*if(match<=0)
{
System.out.println("arrayitem[match].getassetid()");
System.out.println("arrayitem[match].getdescription()");
System.out.println("arrayitem[match].getdatepurchased()");
System.out.println("arrayitem[match].getordernumber()");
System.out.println("arrayitem[match].getcostprice()");
}
////////////////////////////////////////////////////////////////////////////////////
else
{
System.out.println("NO ITEM NAME "+temp+"ON THE LIST");
}
break;
*
*/
}
//***********************************************************************************
case 3:
{
//LIST ALL THE ATENDEE IN A TABLE
///////////////////////////////////////////////////////////////////
//function.generatetable();
break;
///////////////////////////////////////////////////////////////////
}
}
//***********************************************************************************
}while(choice!=4);
}
}
//END

复制代码

兔仙人 · 发表于 24-6-2010 08:51 PM

这个 SOURCE CODE 是你写的吗？

loonloon0625 · 发表于 24-6-2010 08:53 PM

who you mention

兔仙人 · 发表于 24-6-2010 08:55 PM

JAVA SOURCE CODE .

loonloon0625 · 发表于 24-6-2010 08:58 PM

哦，我跟着他的error更改,几多error下，不过没看清错他的写法有没有错哦

loonloon0625 · 发表于 24-6-2010 09:05 PM

为什么这样问？

兔仙人 · 发表于 24-6-2010 09:08 PM

Asset[] 那一 PART 好像有点怪怪的

loonloon0625 · 发表于 24-6-2010 09:10 PM

哈哈，我不是很清楚哦，我都是新手来着，等兔仙人教

AdventChildren · 发表于 25-6-2010 02:22 PM

可以试看抄一部分source code接一部分慢慢debug，又或者从新写过...

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求救JAVA

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