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Java > Learn Java > Why does Java work faster than C++ in LeetCode?
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Why does Java work faster than C++ in LeetCode?

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The JVM has a JIT (just in time) compiler that dynamically compiles the Java byte code down to native machine code as the program is running. The JIT has a good overview of how your program actually runs as opposed to the C/C++ compiler that can only guess how your program will behave. Consequently,...
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The JVM has a JIT (just in time) compiler that dynamically compiles the Java byte code down to native machine code as the program is running. The JIT has a good overview of how your program actually runs as opposed to the C/C++ compiler that can only guess how your program will behave. Consequently, the JIT can make some optimizations that the C/C++ compiler cannot. read less
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Java's dynamic compiler usually better than C++ at removing dead code i.e. code which isn't used
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