JTable Renderer-Promblem when using custom renderer

Question

Hi. i've just started studying Swing component.
So i'm about to ask for help to solve the problem during using custom TableCellRenderer.
Here is my own Renderer which extends JLable and implements TableCellRenderer
public Component getTableCellRendererComponent(JTable table, Object value,boolean isSelected,boolean hasFocus,int row,int column)
     if (isSelected) {
     setForeground(table.getSelectionForeground());
     super.setBackground(table.getSelectionBackground());
     else {
     setForeground(table.getForeground());
     setBackground(table.getBackground());
     JLabel right=new JLabel("LEFT");
     JLabel left=new JLabel("RIGHT");
     this.setLayout(new BorderLayout());
     this.add(left,BorderLayout.WEST);
     this.add(right,BorderLayout.EAST);
     return this;
note: There are 3 JLabel components. Two components are added to the component will be returned.
This code works fine.
but whenever try to resize the column display using above renderer, The " Text " runs in resizing.(making traces)
Please anybody try to run this code, show me some solution.
thank you

Answer 1

A renderer will have its getTableCellRendererComponent method called repeatedly, every time a cell is to be repainted, and its the renderer associated with that cell. Therefore, avoid doing things in this method that should only be done once, for example:
JLabel right=new JLabel("LEFT");
JLabel left=new JLabel("RIGHT");
this.setLayout(new BorderLayout());
this.add(left,BorderLayout.WEST);
this.add(right,BorderLayout.EAST);Can you do that in the renderer's constructor?