transient variables are never serialized in java. It marks a member variable not to be serialized when it is persisted to streams of bytes. When an object is transferred through the network, the object needs to be ‘serialized’. Serialization converts the object state to serial bytes. Those bytes are sent over the network and the … Read more
By default the access type is defined by the place where you put your identifier annotation (@Id). If you put it on the field – it will be AccessType.FIELD, if you put it on the getter – it will be AccessType.PROPERTY. Sometimes you might want to annotate not fields but properties (e.g. because you want … Read more
Google is your friend – first hit – also you might first have a look at what serialization is. It marks a member variable not to be serialized when it is persisted to streams of bytes. When an object is transferred through the network, the object needs to be ‘serialized’. Serialization converts the object state … Read more
statics are implicitly transient, so you don’t need to declare them as such. Serialization is for serializing instances, not classes. static fields (methods are irrelevant since they are part of the class definition so they aren’t serialized) will be reinitialized to whatever value they are set to when the class is loaded. If you have … Read more
Java’s transient keyword is used to denote that a field is not to be serialized, whereas JPA’s @Transient annotation is used to indicate that a field is not to be persisted in the database, i.e. their semantics are different.
The transient keyword in Java is used to indicate that a field should not be part of the serialization (which means saved, like to a file) process. From the Java Language Specification, Java SE 7 Edition, Section 8.3.1.3. transient Fields: Variables may be marked transient to indicate that they are not part of the persistent … Read more