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Java字节码
Compiles to java bytecode
编译成Java字节码
The JIT technique compiles Java bytecode to native code before executing it for the first time, giving much better performance for repeated executions.
In this article we will investigate Java bytecode and how to manipulate it, and why anyone would ever want to do so.
在本文中,我们将会研究Java字节码以及如何对其进行操纵,并探讨人们为何想要这样做。
Figure 1: What is Java bytecode?
图1:什么是Java字节码?
A Java programmer does not need to be aware of or understand Java bytecode at all.
一个Java程序员并不需要理解所有的Java字节码。
Compiled Java code files are generally smaller than code files in C++ as Java bytecode is usually more compact than native machine code and Java programs are never statically linked.
The JIT compiler compiles Java bytecode to optimised native binary code at run time.
JIT编译器在运行时将Java字节码编译为优化的二进制码。
Pack200 is optimized for compressing JAR archive files, specifically the Java bytecode portion of the JAR file.
Pack200专为压缩JAR文件(尤其是其中的字节码 部分)而优化。
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