Please Help!

[Peter Phung]

I'm trying to extend AbstractTableModel but i am having trouble with one of my methods.

 
public Object getValueAt(int nRow, int nCol) {
if (nRow < 0 || nRow >= getRowCount())
    return "";
TableData row = (TableData)resVector.elementAt(nRow);
switch (nCol) {
    case 0: return row.m_fileName;
    case 1: return row.m_drawingSize;
    case 2: return row.m_format;
    case 3: return row.m_drawingName;
    case 4: return row.m_revision;
    case 5: return row.m_projectNumber;
    case 6: return row.m_customerName;
    case 7: return row.m_drawingStatus;
    case 8: return row.m_fileLocation;
    case 9: return row.m_designerName;
    case 10: return row.m_archivingTime;
    case 11: return row.m_description;
    case 12: return row.m_fileSize; //object required/int found
}
    }
//===============================================
class TableData {
    public String m_fileName;
    public String m_drawingSize;
    public String m_format;
    public String m_drawingName;
    public String m_revision;
    public String m_projectNumber;
    public String m_customerName;
    public String m_drawingStatus;
    public String m_fileLocation;
    public String m_designerName;
    public String m_archivingTime;
    public String m_description;
    public int m_fileSize;
    public TableData (String fileName, String drawingSize, String format, String drawingName, String revision, String projectNumber, String customerName, String drawingStatus, String fileLocation, String designerName, String archivingTime, String description, int fileSize) {
m_fileName = fileName;
m_drawingSize = drawingSize;
m_format = format;
m_drawingName = drawingName;
m_revision = revision;
m_projectNumber = projectNumber;
m_customerName = customerName;
m_drawingStatus = drawingStatus;
m_fileLocation = fileLocation;
m_designerName = designerName;
m_archivingTime = archivingTime;
m_description = description;
m_fileSize = fileSize;
    }
}
 

teh error message i get when i try to compilethe code is :
archivetool/resultsTable.java:580: incompatible types
found : int
required: java.lang.Object
case 12: return row.m_fileSize;
Filesize is a field in a database which is created so it has to be an int. Does anyone know what i can do?

[Michael Ernest]

This belongs in the Swing forum, so I'll move it there.

[Michael Morris]

Hi Peter,
Look at the signature of getValueAt():

public Object getValueAt(int nRow, int nCol)

You have to return an Object. You are trying to return a primitive (ie int) so, if you do this:

case 12: return new Integer(row.m_fileSize);

It should work fine.
Hope this helps
Michael Morris
SCJP2

[Peter Phung]

I've tried what was suggested but i get this error:
archivetool/resultsTable.java:563: missing return statement
public Object getValueAt(int nRow, int nCol) {
the code is now :

 
public Object getValueAt(int nRow, int nCol) {
if (nRow < 0 || nRow >= getRowCount())
    return "";
TableData row = (TableData)resVector.elementAt(nRow);
switch (nCol) {
    case 0: return row.m_fileName;
    case 1: return row.m_drawingSize;
    case 2: return row.m_format;
    case 3: return row.m_drawingName;
    case 4: return row.m_revision;
    case 5: return row.m_projectNumber;
    case 6: return row.m_customerName;
    case 7: return row.m_drawingStatus;
    case 8: return row.m_fileLocation;
    case 9: return row.m_designerName;
    case 10: return row.m_archivingTime;
    case 11: return row.m_description;
    case 12: return new Integer(row.m_fileSize);//object required/int found
}
    }
 

If u need to see more code, let me know and i'll post the whole class.
Thanks for your help

[Paul Stevens]

Put return ""; after your switch statement.