Chat Client emoticons window JAVA

Solution 1:

This ListPanel might be a useful, as the DefaultListCellRenderer can display an Icon.

Icon icon = UIManager.getIcon("html.pendingImage");
...
@Override
public Component getListCellRendererComponent(JList list, Object
    value, int index, boolean isSelected, boolean cellHasFocus) {
    JLabel label =  (JLabel) super.getListCellRendererComponent(
        list, value, index, isSelected, cellHasFocus);
    label.setBorder(BorderFactory.createEmptyBorder(N, N, N, N));
    label.setIcon(icon);
    label.setHorizontalTextPosition(JLabel.CENTER);
    label.setVerticalTextPosition(JLabel.BOTTOM);
    return label;
}

Solution 2:

I suppose you mean a chat window like this sort. In that case, you'll need to learn how to layer components over one another, in this case a jPanel, or a jLayeredPane nested inside the main jFrame.

Solution 3:

In the absence of more information, I assume that what you are really after is a window which appears without window decorations (i.e. borders and title bar) and which does not show in the task bar. I therefore suggest you look at the JWindow documentation, which does exactly this.