Wednesday, August 1, 2012

default-default table cell renderer

System.out.println(System.identityHashCode(new JTable().getDefaultRenderer(Object.class)));
System.out.println(System.identityHashCode(new JTable().getDefaultRenderer(Object.class))); // different address

You can see each jtable has a default-default-default render instance. When I say default-default... I mean the renderer for Object.class.

Given this renderer instance is shared by all cells of the jtable, you can customise this instance to control the default appearance of many, many cells. This object is stateful -- actually a subclass instance of JLabel.

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