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Java Essentials For Hadoop– An Insight

Java can be defined as a high-level programming language, released in the year November 1995, and developed by Sun Microsystems. This programming section can be used in order to create complete applications. This might run on any single computer or can also be distributed among various clients and servers, in a particular network. It can also be stated as an object-oriented program, which follows the rule of write once and run every time codes. There are different features, which make this program a must have, for the computer savvy personalities. More on the features There are various prominent features, associated with Java programming. Listed below, are some of the specific options, associated with this field of computer programming sessions:

  • Object orientated programming sessions
  • Available with a simple interface
  • Associated with distributed and multi-threaded options
  • A secured as well as a robust platform
  • Comes with platform independent services

You need to be aware of the major options of JDK. It is a perfect mingle of JRE and development tools. The field of JRE is segmented into two major sections, and those are JVM and utility classes. On the other hand, under the development tools, you are likely to come across debugger and compiler. Types of data available Data are segmented into two major segments, and those are primitive and non-primitive data types. Under the primitive section, the data is divided into nine subcategories. Those are Boolean, byte, char, short, int, float, long, strong and double. On the other hand, for non-primitive types, the services are divided into interface type, class type, and array type. Apart from that, you need to be aware of the operators, available. This can be defined in a way, which can help in performing various operations, on different variables. Checking the operator types Operators are practically divided into six major segments, and those are stated below:

  • Arithmetic
  • Assignment
  • Logical
  • Relational
  • Unary
  • Bitwise

On the other hand, Java essentials comprise of proper statements and blocks. Statements are going to form a complete set of commands, which are to be executed. Moreover, these are always terminated with the help of a semi-colon. You are likely to use block while dealing with Java segments. It can be defined as a compound statement, which is likely to be enclosed in various curly brackets. You need to incorporate open braces while starting the blocks, and close braces, when the block ends. More on Java class Java class can be stated as a blueprint or template, which can be used to describe and state the type of object. Moreover, the objects comprise of behaviors and states, and it can also be stated as an instance of the class. The method of java interface is segmented into five major segments, and those are modified, Java keyword, return type, function name and any sections of arguments. Lastly, modifiers are classified under four major sections, and those are public, protected, default and private. The public section can be accessed from anywhere, and private can be accessed from the class only. The protected version can only be accessed from the derived class or the same package.

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