Q. What is JIT and its use?

A. Really, just a very fast compiler In this incarnation, pretty much a one-pass compiler - no offline computations. So you can't look at the whole method, rank the expressions according to which ones are re-used the most, and then generate code. In theory terms, it's an on-line problem

• JIt is the Just in Time Compiler.It is used to improve the Performance.JIT compiles parts of the byte code that have similar functionality at the same time, and hence reduces the amount of time needed for compilation.Here the term “compiler” refers to a translator from the instruction set of a Java virtual machine (JVM) to the instruction set of a specific CPU.
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• JIT(just in time) it is used to increase execution speed.
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• JIT is just in time compiler. And it is a part of JVM which is used to speedup the execution of the programming in execution phase but not in compilation phase..
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• The JIT or Just in time compiler is one which is responsible for loading only the part of code that has been requested by the user, while the remaining part of code exists in the secondary memory
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