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A proxy server speaks the client side of a protocol to another service, got it? Now this proxy is often required when clients have certain restrictions which servers they can connect to. Therefore, a client would connect to a proxy server, which didn’t have such restrictions and the proxy server would in turn communicate for […]
Dynamic Method Dispatch is the mechanism by which a call to an overridden function is resolved at run time, rather than compile time. Dynamic method dispatch is really important in Java because this is how java implements run time polymorphism. A superclass reference variable can refer to a subclass object. Java uses this fact to […]
Microsoft’s ODBC (Open Data Base Connectivity) API is probably the most widely used programming interface for accessing relational databases. It offers the ability to connect to almost all databases on almost all platforms. So why not just use OBC from Java?
The answer is that you can use ODBC from Java but this is best done […]
Types of JDBC Driver Managers
JDBC contains three components- application, driver manager and driver. The user application invokes JDBC methods to send SQL statements to the database and retrieves results. JDBC driver manage is used to connect java applications to the correct JDBC driver. JDBC driver test suite is used to ensure that the installed JDBC […]
JDBC Driver Models
JDBC supports two and three tier models
Two Tier Model- in this type of model, java applets/applications interact directly with the database. A JDBC driver is required to communicate with the particular database management system that is being accessed. SQL statements are sent to the database and results are given to the user. This […]
The combination java with JDBC is very useful because it lets the programmer run his/her program on different platforms. Java programs are secure, robust, automatically downloaded from the network and java is a good language to create database applications. JDBC API enables java applications to interact with different types of databases. It is possible to […]
Characterstics of JDBC
It’s a call-level SQL interface for java
It doesn’t restrict the type of queries passed to an underlying DBMS driver.
JDBC mechanisms are simple to understand and use
It provides a java interface that stays consistent […]
JDBC stands for Java Database Connectivity. It’s a set of Java API (application program interface) and is used for executing SQL statements. This API consists of a set of classes and interfaces to enable programmers to write pure Java Database applications.
JDBC is a software layer that allows developers to write real client-server projects in java. […]
You people must be thinking that how Java can manage hell loads of processing. And the answer is that it does through the collections framework which is contained in java.util package and is one of the Java’s most powerful sub-systems. This collection defines a set of of interfaces and their implementations to manipulate collections that […]
1) Applets dont use main() method for initiating the execution of code but when applets are loaded they automatically call certain methods of Applet class to start and execute the applet code.
2) Applets are restricted to the use the libraries.
3) Applets cant run any program the local computer.
4) Applets cant communicate with other servers on […]