What is a .class file used for?

Class file details in Java A class file in Java has a . class extension. It contains bytecode, which is instruction for Java Virtual Machine, which translates that bytecode into platform-specific machine level instruction based upon whether the Java program runs on Windows or Linux .

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Can we read .class file?

The language it produces is still bytecode (not anything like Java), but it’s fairly readable and extremely instructive. Also, if you really want to, you can open up any . class file in a hex editor and read the bytecode directly . The result is identical to using javap .9 Kas 2011

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