Interested to Buy Any Domain ? << Click Here >> for more details...
How java is platform independent?
- 41 Answers
- 84605 Views
- College School Exams Tests, Infosys, TCS, I also Faced
- E-Mail Answers
Answer Posted / steve
Java was designed to not only be cross-platform in source
form like C, but also in compiled binary form. Since this is
frankly impossible across processor architectures Java is
compiled to an intermediate form called byte-code. A Java
program never really executes natively on the host machine.
Rather a special native program called the Java interpreter
reads the byte code and executes the corresponding native
machine instructions. Thus to port Java programs to a new
platform all that is needed is to port the interpreter and
some of the library routines. Even the compiler is written
in Java. The byte codes are precisely defined, and remain
the same on all platforms.
The second important part of making Java cross-platform is
the elimination of undefined or architecture dependent
constructs. Integers are always four bytes long, and
floating point variables follow the IEEE 754 standard for
computer arithmetic exactly. You don't have to worry that
the meaning of an integer is going to change if you move
from a Pentium to a PowerPC. In Java everything is guaranteed.
However the virtual machine itself and some parts of the
class library must be written in native code. These are not
always as easy or as quick to port as pure Java programs.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
What is the abstraction?
What is the equal sign?
Why does the integer quotient -0/3 yield 0, but the double quotient -0.0/3.0 yields – 0.0?
What is the difference between the ">>" and " >>>" operators in java?
What does null mean in java?
Does java allow overriding static methods ?
What is treeset in java collection?
Explain the difference between intermediate and terminal operations in java8?
What are the advantages of unicode?
What is a java lambda expression?
What carriage return means?
What is complexity and its types?
Which collection is thread safe in java?
How do you add an arraylist to an array in java?
How do you use nextline in java?
