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JDK 64bit or 32bit?
(3 answers)
Closed 9 years ago.
I am beginner to Java , I would like to know is there any difference between JDK 32 bit and 64 bit?
e.g.in terms of performance or in any other aspect?
Yes, but keep in mind that that's only a runtime issue; the code you write is identical. For most applications, using a 64-bit JVM will result in improved performance, but it's dependent on the specifics of what you're doing.
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Java 64 bit JDK question
(1 answer)
Closed 5 years ago.
As per my understanding for compiled jar files (byte - codes) the (32/64 bit) should not be a problem.
I know a jar compiled in 32 bit will definitely work with 64-bit application.
Will a jar compiled in 64 bit work with 32 bit application ?
Yes, as long you do not use native libraries.
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What is the difference between "architecture-neutral" and "portable"?
(9 answers)
Closed 6 years ago.
I read that "Java is architectural neutral because it have the capacity to read the factor key of one processor into the factor of another processor."
Please explain me in detail the above statement?
Java was designed to support applications on networks.
To enable a Java application to execute anywhere on the network, the compiler generates an architecture-neutral object file format--the compiled code is executable on many processors, given the presence of the Java runtime system
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Can't start Eclipse - Java was started but returned exit code=13
(44 answers)
Closed 6 years ago.
Eclipse does not start: error EXIT CODE 13.
I use windows 10 64 bits.
Could you help me?
64-bit Eclipse requires a 64-bit JVM, and 32-bit Eclipse requires 32-bit JVM--you can not mix-and-match between 32-bit and 64-bit.
This is the most frequent cause of an Error 13
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Who decides data types size in Java
(3 answers)
Closed 9 years ago.
Do the variables have varying memory sizes depending upon the JVM?
Yes.
For example, objects almost certainly use up more memory on a 64bit JVM than on a 32bit JVM.
The "logical size" of primitive types such as int (which is always 32bit) is fixed by the Java specification, though.
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Using multiple cores/processors when compiling Java
Can javac be configured to benefit from multiple CPU cores?
No, it cannot use multiple cores; however the Eclipse compiler can, if that helps.
See this answer.