A newer compiler will work with older binaries(but older compilers may not understand newer binaries, like javac 1.6 can't read classes compiled by javac 1.8);
Finally set PATH andJAVA_HOME environment variables to refer to the directory that contains java and javac, typically java_install_dir/bin and java_install_dir respectively.
更重要的是,javac编译器不执行简单的优化,如循环展开,代数简化,强度降低等。
More importantly, the javac compiler does not perform simple optimizations like loop unrolling, algebraic simplification, strength reduction, and others.
Finally set PATH andJAVA_HOME environment variables to refer to the directory that contains java and javac, typically java_install_dir/bin and java_install_dir respectively.
Finally set PATH andJAVA_HOME environment variables to refer to the directory that contains java and javac, typically java_install_dir/bin and java_install_dir respectively.
Secondly introduces the Java technology, including I/O technology,Chinese coding problem, Javac compiler, class file structure, working mechanism of ClassLoader and JVM of memory management.
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