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jb1.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke("ctrl Y"), "panel.yellow");
jb2.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke("ctrl B"), "panel.blue");
jb1.getActionMap().put("panel.yellow", yellowAction);
jb2.getActionMap().put("panel.blue", blueAction);