JComponent.java 文件源码

/**
 * If the maximum size has been set to a non-<code>null</code> value
 * just returns it.  If the UI delegate's <code>getMaximumSize</code>
 * method returns a non-<code>null</code> value then return that;
 * otherwise defer to the component's layout manager.
 *
 * @return the value of the <code>maximumSize</code> property
 * @see #setMaximumSize
 * @see ComponentUI
 */
@Transient
public Dimension getMaximumSize() {
    if (isMaximumSizeSet()) {
        return super.getMaximumSize();
    }
    Dimension size = null;
    if (ui != null) {
        size = ui.getMaximumSize(this);
    }
    return (size != null) ? size : super.getMaximumSize();
}