🚀 go-pugleaf

I am having trouble getting reliable access to an individual cell content. 
The code for my jtable is like this:
class MyTableModel extends AbstractTableModel {
private String[] columnNames = {"Dia. (in)",
"Instal. Cost",
};
private Object[][] data = {
{"3", "25"},
{"4", "35"},
{"5", "40"},
{"6", "45"},
{"8", "50"}
};

public int getColumnCount() {
return columnNames.length;
}
public int getRowCount() {
return data.length;
}
public String getColumnName(int col) {
return columnNames[col];
}
public Object getValueAt(int row, int col) {
return data[row][col];
}

public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}

public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
//if (col < 2) {
//return false;
//} else {
return true;
//}
}

public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
}

data[row][col] = value;
fireTableCellUpdated(row, col);

if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
}
}

private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();

for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + data[j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}


When I edit a cell value in the table GUI, the change is not effective until 
another cell is selected. and I want to use this modified value somewhere 
else in the program. I cannot count on the user selecting another cell. How 
can I get the change to be instantly incorporated into the table model?

Any help appreciated.
Thanks.

Jacques