Hi Roger, src/java.base/share/classes/java/io/ObjectInputStream.java
259 private static class Logging { The class can be final. 1265 ? Logger.Level.DEBUG There is one space too much before "Logger". 2611 /** total bytes read from the stream */ 2612 private int totalBytesRead = 0; I think the type of the field totalBytesRead must be long. In the #skip(long)-method you update it with a long value. Best regards, Andrej Golovnin