Java vs. C

[Alan]

Why is Java slower than something like C or C++? And also, is the JNI slower than C (though it is mostly in C)?

[helios]

C and C++ compile to native code. Java compiles to bytecode which, depending on implementation, may be ran through a virtual machine or compiled to native code JIT. Neither of these solutions are very efficient.

[blackcoder41]

java talks with the java virtual machine, not with the OS directly..

[tummychow]

Java is not as fast as C++ but it is highly platform portable. But because it must converse through the Java Runtime Environment some speed is lost.

[Bazzy]

[java] is highly platform portable

It runs only on one machine...

[Denis]

Java is unpredictable language.
Because garbage collector maybe going to run in not convenient time.

[blackcoder41]

Java is unpredictable language.
Because garbage collector maybe going to run in not convenient time.

you can force it to do garbage collection in any time you wanted to.

[helios]

Java is unpredictable language.

Me john, big tree!

[blackcoder41]

Me john, big tree!

what?