We just released simulator (uCertify Lab) for CompTIA HIT-001 (Health Care Technician) exam. The certification course covers the knowledge and skills required to implement, deploy, and support healthcare IT systems in U.S. clinical setting. The exam is intended for IT professionals who are CompTIA A+ certified or have 500 hours of hands-on IT technical experience in the field, plus the knowledge/skills necessary in clinical setting.

uCertify LABS is the latest offering from uCertify. They create live environment to give hands on experience. uCertify  labs are inexpensive and a safe way to explore and learn. The labs are versatile – labs simulate real-world, hardware, software & command line interface environments. The CompTIA Healthcare IT Technician HIT-001 Lab contains 71 activities and 13 videos. For more information visit –


Fundamental Object-Oriented Concepts

  • In Java, a narrowing conversion is also known as an explicit type conversion or casting.
  • A byte can represent values between -128 to 127.
  • An array, in Java, is an ordered collection of primitives, object references, or other arrays. All the elements of an array must be of the same type, except in case of polymorphism.
  • Array elements are initialized to default values, wherever they are created.
  • The increment operator can be used in either of the two forms given below:
    1. Prefix form: In the prefix form, it appears before the operand. For example, ++a;
    2. Postfix form: In the postfix form, it appears after the operand. For example, a ++;
  • Numeric promotions are used to convert the operands in a numeric expression to a common type before an operation is performed between the operands.
  • In Java, there are two kinds of numeric promotions as follows:
    1. Unary numeric promotion
    2. Binary numeric promotion
  • Pass SCJA Certification Java 1.2 in a first attempt:

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