Having in mind portability and simplicity Sun Microsystems created "Write once, run anywhere" (WORA) slogan to illustrate the cross-platform benefits of the Java programming language.
Multithreading is the ability of a central processing unit (CPU) or a single core in a multi-core processor to execute multipleprocesses or threads concurrently. Java is amulti-threaded programming languageand this means we can create multi-threading applications.
There are two packages in Java API (java.io and java.nio) that handles input and outputthrough data streams, serialization, and the file system. Here is a list of simple examples on Java IO topic.
Java Database Connectivity (JDBC) is an application programming interface (API) for the programming language Java, which defines how a client may access a database. It is part of the Java Standard Edition platform, from Oracle Corporation. JDBC standardises how to connect to a database, how to execute queries, how to navigate the result on a query, and how to execute updates in the database.
