java--swing--统一设置窗口字体样式

/*
* 统一所有子窗口设置字体样式
*/
FontUIResource fontRes = new FontUIResource(new Font("微软雅黑",Font.PLAIN,16));
for (Enumeration<Object> keys = UIManager.getDefaults().keys();keys.hasMoreElements();) {
Object key = keys.nextElement();
Object value = UIManager.get(key);
if (value instanceof FontUIResource) {
UIManager.put(key, fontRes);
}
}