By Pawlan M.
While you're attracted to studying the Java(tm) programming language yet hesitate to dive into overly dense, theoretical assets, necessities of the Java(tm) Programming Language is the right start line. This obtainable, hands-on instructional employs a "learn-by-doing" method of introduce you to the fundamentals. It starts off with an easy software, then develops it little by little, including new positive factors and explaining vital suggestions with each one next lesson. this straightforward application grows right into a common digital trade program that illustrates a number of the Java 2 platform's most crucial parts. you'll research such Java programming language necessities as: the adaptation among purposes, applets, and servlets/JavaServer Pages(tm) development a consumer interface that accepts person enter studying and writing information to records and databases community communications, together with RMI and sockets Collections Serialization applications and JAR dossier structure Internationalization safety basics, together with cryptographic software program necessities of the Java(tm) Programming Language ends with a proof of object-oriented programming recommendations, made way more comprehensible and appropriate end result of the hands-on event bought in the course of the ebook. After operating via this e-book, you've got the root essential to with ease growth to extra complicated studying fabrics for the Java programming language and make the most of the subtleties and extra subtle functions of the language.
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Additional info for Essentials of the Java Programming Language: A Hands-On Guide, Part 1
Which permissions it needs varies with the type of driver used to make the database connection. Database Setup Create Database Table Database Access by Applications Establishing a Connection Final and Private Variables Writing and Reading Data Database Access by Applets JDBC Driver JDBC-ODBC Bridge with ODBC Driver Database Access by Servlets More Information Database Setup You need access to a database if you want to run the examples in this lesson. You can install a database on your machine or perhaps you have access to a database at work.
Send Interface The Send interface declares the methods implemented in the RemoteServer class. These are the remotely accessible methods. html public String getData() throws RemoteException; } RMIClient1 Class The RMIClient1 class establishes a connection to the remote server program and sends data to the remote server object. The code to do these things is in the actionPerformed and main methods. sendData method to send text to the remote server object. setText(new String("")); } } main Method The main method installs the RMISecurityManager and creates a name to use to look up the RemoteServer server object.
As an exercise, change the code to handle the read and write operations separately. Give it a try before peeking at the solution. java application, but shows how to use the APIs for handling data in character streams instead of byte streams. You can use either approach in applets or applications. In this lesson, the choice to handle data in bytes streams in the application and in character streams in the applet is purely random. In real-life programs, you would base the decision on your specific application requirements.