Advanced Swong jTable cells

Hi !

I'm writing swing application that shall compare differences between
objects. I have a jTable, and its every row represents one entity. In
database i have corresponding states of that object and it is possible
to show differences between these states in table cells. I have my own
table model

public Object getValueAt(int rowNumber, int columnNumber) {
if (rowNumber < 0 || rowNumber >= getRowCount())
return "";

Object obj = objectList.get(rowNumber);

switch (columnNumber) {
....
case 2:
return obj.getSomeValue()
...
case x:
return new
ComparableValues(obj.getSomValue(), value to compare with);
}
}

I also have specific TableCellRenderer attached to column, it acts
like this

class MyCellRenderer extends DefaultTableCellRenderer {

public Component getTableCellRendererComponent(JTable table, Object
value, boolean isSelected, boolean hasFocus, int row, int column) {
Component cell = super.getTableCellRendererComponent(table, value,
isSelected, hasFocus, row, column);

if (value instanceof ComparableValues) {
// cast
setText("(" + value.getDifference() +
" )" + value.getOriginalValue())
}
}
}

Everything works great, but i would like to improve cell design ...

Q1) How to use more than one text color in cell ?
Q2) How to use many font sizes in one cell ?

I have one idea but i don't like it ;) (MyTableCellRendere extends
JLabel and use html as a content ... )

in advance, thx for any help

.

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