//docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/ObjectInputStream.html#readClassDescriptor()" title="class or interface in java.io" class="external-link">readClassDescriptor</a>, <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/ObjectInputStream.html#readDouble()" title="class or interface in java.io" class="external-link">readDouble</a>, <a href="https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/ObjectInputStream.html#readFields()" title="class