LockedTableModel is the model that holds the number of locked rows/columns at the 4 edges of the table.

You can set the locked rows/column with:

public void setLockedColumns(int columns, int direction);

public void setLockedRows(int rows, int direction);

Also, retrieve the number of locked rows/columns:

public int getLockedColumns(int direction);

public int getLockedRows(int direction);

There are four defined directions:

LEFT_DIRECTION, RIGHT_DIRECTION, TOP_DIRECTION and BOTTOM_DIRECTION.