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Java is an object-oriented, cross platform, multi-purpose programming language produced by Sun Microsystems, later acquired by Oracle Corporation. One thing that distinguished Java from some other languages is its ability to run the same compiled code across multiple operating systems. In other languages, the source code (code that is written by the programmer), is compiled by a compiler into an executable file. This file is in machine language, and is intended for a single operating system/processor combination, so the programmer would have to re-compile the program seperately for each new operating system/processor combination. Java is different in that it does not compile the code directly into machine language code. Compilation creates bytecode out of the source code.
Core Spring Examples
Restful Web Service Examples
Collections & Util Package
A collections framework is a unified architecture for representing and manipulating collections. Java Collections Framework reduces programming effort, increases program speed and quality, allows interoperability among unrelated APIs, fosters software reuse.
Data Structures
A data structure is a particular way of storing and organizing data in a computer so that it can be used efficiently. Data structures provide a means to manage large amounts of data efficiently. efficient data structures are a key to designing efficient algorithms.
Java Interview Programs
We have collected list of java interview programs from few software engineers and also with my personal experience. In this section, we are trying to give you the best solutions for these problems. Good interviewers are more interested in your ability to code.
Java Sorting Algorithms
A sorting algorithm is an algorithm that puts elements of a list in a certain order. The most-used orders are numerical order and lexicographical order. Efficient sorting is important for optimizing the use of other algorithms such as search and merge...
Java JDBC Examples
JDBC stands for Java Database Connectivity. JDBC API is a collection of classes and interfaces, which help a Java application to connect to SQL based relational databases by abstracting vendor specific details of the database. JDBC enables Java developers to connect to...
Java Annotations Examples

Knowledge Centre
What is transient variable?
Transient variables cannot be serialized. During serialization process, transient variable states will not be serialized. State of the value will be always defaulted after deserialization.
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