Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

In this example, if Address doesn’t implement Serializable, a java.io.NotSerializableException will be thrown when trying to serialize a Person object. See Also: Top Java IDEs and Code Editors ...

Time zones, datelines and inconsistent date formats can cause Java to throw various DateTimeExceptions at runtime. For example, the following code compiles, but the LocalDate class' HourOfDay field ...

The Jakarta Persistence API (JPA) is a Java specification that bridges the gap between relational databases and object-oriented programming. This two-part tutorial introduces JPA and explains how ...

Print and format a table with printf Sometimes it’s nice to format the output of a console based Java program in a friendly way. The java.lang package has no built-in table generators, but you can ...