DataFlavorUtil.java 文件源码

@Override
public FlavorMap getFlavorMap(Supplier<FlavorMap> supplier) {
    FlavorMap map = flavorMap;
    if (map == null) {
        synchronized (this) {
            map = flavorMap;
            if (map == null) {
                flavorMap = map = supplier.get();
            }
        }
    }
    return map;
}