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Thread: i do not know how to solve this issue

  1. #1
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    Default i do not know how to solve this issue

    public class CcaExercise
    {
    	private String academicYear;
    	private String semester;
    	private Student [] appList;
    	private Cca [] ccaList;
     
    	public CcaExercise (String academicYear, String semester, Student [] appList, Cca [] ccaList)
    	{
    		this.academicYear=academicYear;
    		this.semester=semester;
    		this.appList=appList;
    		this.ccaList=ccaList;
    	}
     
    	public void addStudentToExercise(Student s)
    	{
    		for(int i=0; i< appList.length;i++)
    		{
    			if(appList[i]==null)
    			{
    				appList[i]=s;
    				break;
    			}
    		}
    	}
    	public Student getStudentInExercise(String nric)
    	{
    		for(int i=0;i<appList.length;i++)
    		{
    			if(appList[i] !=null&&
    				appList[i].getNric().equals(nric))
    				{
    					return appList[i];
    				}
    		}
    		return null;
    	}
    	public void displayAllStudents()
    	{
    		for(int i=0; i<appList.length;i++)
    		{
    			if(appList[i] !=null)
    			{
    				System.out.println(appList[i].toString());
    			}
    			}
     
    		}
    		public void addCca(Cca c)
    		{
    			for(int i=0;i<ccaList.length;i++)
    			{
    				if(ccaList[i]==null)
    				{
    					ccaList[i]=c;
    					break;
    				}
    			}
    		}
    		public boolean removeCca(String ccaID)
    		{
    			boolean result=false;
    			for(int i=0;i<ccaList.length;i++)
    			{	
    				if(ccaList[i].getCcaID().equals(ccaID))
    				{
    					ccaList[i]=null;
    					result=true;
    					break;
    				}
    			}
    			return result;
    		}
    		public void displayAllCcas()
    		{
    			for(int i=0;i<ccaList.length;i++)
    			{
    				if(ccaList[i]!=null)
    				{
    					System.out.println(ccaList[i].toString());
    				}
    			}
    		}
    		public Cca findMostVacancy()
    		{
    			//search for cca with largest number of vacancy
    			int largest=0;
    			Cca result=null;
    			for(int i=0;i<ccaList.length;i++)
    			{
    				if(ccaList[i]!=null&&
    					ccaList[i].getNumOfVacancy()>largest)
    					{
    						//update largest value
    						largest=ccaList[i].getNumOfVacancy();
    						//save the object having largest value
    						result=ccaList[i];
    					}
    		}
    		return result;	
    }
    public Cca findLeastVacancy()
    {
    	//search for CCA with smallest number of vacancy
    	int smallest=101;
    	Cca result=null;
    	for(int i=0;i<ccaList.length;i++)
    	{
    		if(ccaList[i]!=null&&
    			ccaList[i].getNumOfVacancy()<smallest)
    			{
    				//update the smallest value
    				smallest=ccaList[i].getNumOfVacancy();
    				//save the object having smallest value
    				result=ccaList[i];
    			}
    		}
    		return result;
    }
    public void displayAllStudentsAllCca()
    {
    	//print all students in all ccas
    	for(int i=0;i<ccaList.length; i++)
    	{
    		if(ccaList[i]!=null)
    		{
    			ccaList[i].displayStudentList();
    		}
    	}
    }
    public int processApplications()
    {
    	int success=0;
    	for(int i=0;i<appList.length;i++)
    	{
    		//for each student
    		//search for CCA that student apply to
    		for(int j=0;j<ccaList.length;j++)
    		{
    			if(ccaList[j]!=null&&
    				ccaList[j].getCcaID().equals(appList[i].getCcaRequest())&&
    				ccaList[j].getNumOfVacancy()>0&&
    				appList[i].getCgpa()>ccaList[j].getMinEntryCgpa())
    				{
    					// add student to ccaLists studentList array
    					ccaList[j].updateStudentList(appList[i]);
    					//remove applicant from applist
    					appList[i]=null;
    					ccaList[j].setNumOfVacancy(ccaList[j].getNumOfVacancy()-1);
    					success++;
    				}
     
    		}
     
    	}
    	return success;
     
     
    }
    public void displayNumberPerCca()
    {
    	for(int i=0;i<ccaList.length;i++)
    	{
    		if(ccaList[i]!=null)
    		{
    			System.out.println(100-ccaList[i].getNumOfVacancy());
    		}
       }
     }
    }


    The problem are

    CcaExercise.java:133: displayStudentList(java.lang.String) in Cca cannot be applied to ()
    ccaList[i].displayStudentList();
    ^
    CcaExercise.java:152: updateStudentList(java.lang.String) in Cca cannot be applied to (Student)
    ccaList[j].updateStudentList(appList[i]);
    ^
    2 errors


    as i see the fault is at another class code called Cca

    this is the Cca Class code

    public class Cca{
     
     
    	private String ccaID;
    	private String name;
    	private int numOfVacancy;
    	private Student[]studentList;
    	private double minEntryCgpa;
     
    	public Cca(String ccaID,String name,int numOfVacancy,Student[]studentList,double minEntryCgpa){
     
    		this.ccaID = ccaID;
    		this.name = name;
    		this.numOfVacancy = numOfVacancy;
    		this.studentList = studentList;
    		this.minEntryCgpa = minEntryCgpa;
     
    	}
    	public String getCcaID()
    	{
     
    		return ccaID;
    	}
     
    	public String getName()
    	{
     
    		return name;
    	}
     
    	public int getNumOfVacancy()
    	{
     
    		return numOfVacancy;
    	}
     
    	public void setNumOfVacancy(int numOfVacancy)
    	{
     
    		this.numOfVacancy = numOfVacancy;
    	}
     
    		public double getMinEntryCgpa()
    	{
     
    		return minEntryCgpa;
    	}
     
    		public void setMinEntryCgpa(double minEntryCgpa)
    	{
     
    		this.minEntryCgpa = minEntryCgpa;
    	}
     
    	public Student updateStudentList(String nric)
    	{
     
    		for(int count =0;count<studentList.length;count++)
    		{
    			if(studentList[count] != null &&
    				studentList[count].getNric().equals(nric))
    				{
     
    				return studentList[count];
    			}
    		}
    		return null;
    	}
     
    	public Student displayStudentList(String name)
    	{
     
    		for(int count =0;count<studentList.length;count++)
    		{
    			if(studentList[count] != null &&
    				studentList[count].getName().equals(name))
    				{	
    				return studentList[count];
    			}
    		}
    		return null;
    	}
     
    		public String toString()
    		{
    		String info = "ccaID:" +ccaID +"\nName:" +name +"\nNumOfVacancy:" +numOfVacancy;
    		return info;
    	}
     
    }

    Can anyone help me solve it thz alot
    Last edited by helloworld922; January 15th, 2010 at 01:43 AM. Reason: Please use [code] tags!


  2. #2
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    Default Re: i do not know how to solve this issue

    i know my code very messy i apologize

  3. #3
    Junior Member james's Avatar
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    Angry Re: i do not know how to solve this issue

    why don't you analyzes it again

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