TextAttribute.java 文件源码

/**
 * Resolves instances being deserialized to the predefined constants.
 */
protected Object readResolve() throws InvalidObjectException {
    if (this.getClass() != TextAttribute.class) {
        throw new InvalidObjectException(
            "subclass didn't correctly implement readResolve");
    }

    TextAttribute instance = instanceMap.get(getName());
    if (instance != null) {
        return instance;
    } else {
        throw new InvalidObjectException("unknown attribute name");
    }
}