JDK6 software introduction
A very important feature of the Java language is its independence from the platform, and the use of the Java virtual machine is the key to realizing this feature. If a general high-level language wants to run on different platforms, it must at least be compiled into different target codes. After the introduction of the Java language virtual machine, the Java language does not need to be recompiled when running on different platforms.
Java language usage model The Java virtual machine shields information related to specific platforms, so that the Java language compiler only needs to generate the target code (bytecode) that runs on the Java virtual machine, and it can run on multiple platforms without modification.
When the Java virtual machine executes bytecode, it interprets the bytecode into machine instructions for execution on the specific platform.
JDK6 function introduction
1. A very important feature of the Java language is its independence from the platform, and the use of the Java virtual machine is the key to achieving this feature.
2. If a general high-level language is to be run on different platforms, it must at least be compiled into different target codes.
3. After the introduction of the Java language virtual machine, the Java language does not need to be recompiled when running on different platforms.
JDK6 includes components
javac – compiler, converts source program into bytecode
jar – packaging tool, packages related class files into one file
javadoc – documentation generator, extracting documentation from source code comments
Jdb–debugger, error checking tool
JDK6 update log
Optimize user feedback issues and improve detailed experience
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