#vulnerable code 
                                @Override
    public void changeSelection(int row, int column, boolean toggle, boolean extend) {
        // For shift+click
        lastRow = currentRow;
        lastColumn = currentColumn;
        currentRow = row;
        currentColumn = column;

        super.changeSelection(row, column, toggle, extend);

        // If file changed
        if (currentRow != lastRow || (currentColumn != lastColumn && viewMode != TableViewMode.FULL)) {
            // Update selection changed timestamp
            selectionChangedTimestamp = System.currentTimeMillis();
            // notify registered TableSelectionListener instances that the currently selected file has changed
            fireSelectedFileChangedEvent();
        }
        //		// Don't refresh status bar if up, down, space or insert key is pressed (repeated key strokes).
        //		// Status bar will be refreshed whenever the key is released.
        //		// We need this limit because refreshing status bar takes time.
        //		if(downKeyDown || upKeyDown || spaceKeyDown || insertKeyDown)
        //			return;
    } 
                            #location 5 
                            #vulnerability type THREAD_SAFETY_VIOLATION
#fixed code
                                @Override
    public void changeSelection(int row, int column, boolean toggle, boolean extend) {
        // For shift+click
        lastRow = currentRow;
        int lastColumn = currentColumn;
        currentRow = row;
        currentColumn = column;

        super.changeSelection(row, column, toggle, extend);

        // If file changed
        if (currentRow != lastRow || (currentColumn != lastColumn && viewMode != TableViewMode.FULL)) {
            // Update selection changed timestamp
            selectionChangedTimestamp = System.currentTimeMillis();
            // notify registered TableSelectionListener instances that the currently selected file has changed
            fireSelectedFileChangedEvent();
        }
        //		// Don't refresh status bar if up, down, space or insert key is pressed (repeated key strokes).
        //		// Status bar will be refreshed whenever the key is released.
        //		// We need this limit because refreshing status bar takes time.
        //		if(downKeyDown || upKeyDown || spaceKeyDown || insertKeyDown)
        //			return;
    }