Piotr Wilkin questions

Piotr Wilkin answers

• Has something replaced BeanItemContainer in Vaadin 8?
• Java - Pass a method to a class and execute it in a new Thread
• Java Hashcode and Equals for Java 8 functional interface objects
• Using the Java 8 Streams API, can sorted() be relied upon when calling Collectors.toSet()?
• java.lang.AssertionError thrown by compiler when adding generated method with parameters
• NoClassDefFoundError error creating RestHighLevelClient bean
• Why in java method overriding allows to have covariant return types, but not covariant parameters?
• Using javax.annotation.Nonnull: which java jar dependency to get it from? [duplicate]
• JSON serializing and deserializing with hibernate jpa to have parent object into child in JSON response
• ClassNotFoundException when using ServiceLoader in Glassfish4 Java EE app