Get Decompiling Java PDF

By Godfrey Nolan

ISBN-10: 1430207396

ISBN-13: 9781430207399

ISBN-10: 1430254696

ISBN-13: 9781430254690

Both Java and .NET use the belief of a "virtual machine," or VM. And whereas VMs are priceless for a few reasons, they undermine the protection of your resource code, simply because construction could be reversed, or decompiled. Which makes this distinctive ebook tremendous worthy: you want to comprehend decompilation, to correctly defend your highbrow property.

for instance, how safe is your code once you run an obfuscator? The ebook will resolution questions like this, and supply extra thorough information regarding Java byte codes and the Java digital computer (JVM) than the other e-book out there. This e-book redresses the imbalance by means of delivering insights into the positive factors and boundaries of modern-day decompilers and obfuscators, and providing a close examine what JVMs truly do.

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2 and above. It was designed to, now get this, "debug unnecessary object retention," which translates to memory leaks to you and me. See, garbage collection algorithms, such as reference counting or mark and sweep techniques, aren't 100 percent accurate either. Classfiles can have threads that don't terminate properly, or Actionlisteners that fail to deregister, or simply static references to an object that hang around long after the object should have been garbage collected. HAT has little or no impact on the decompilation process.

Paint Method Attributes 1<1AttributeCount> Code 45 Chapter2 64 4 2 36 2bbb000659b700071208b600092ab6oooab6ooo 9120bb60009b6000c10321019b60oodb1 O 1 19 10 start pc: 0 line number 17 start pc: 35 line number 18 The attribute type above is a code attribute.

AccessFlags>Ox0001 All of the methods in the example are public methods. Table 2-5. Method Access Flags Na• ACC_PUBLIC Value Description OxOOOl Class or interface ACC_PRIVATE 0x0002 Class ACC_PROTECTED Ox0004 Class ACC_STATIC 0x0008 Class ACC_FINAL OxOOlO Class ACC_SYNCHRONIZED Ox0020 Class ACC_NATIVE OxOlOO Class or interface ACC__ABSTRACT Ox0400 Abstract ACC_STRICT Ox0800 Strict You can now find the name and the method descriptors of the final method. 44 Ghost in the Machine 22<1NameType_Index> 23<1Description_Index> Then you pull out the name and description of the method from constant_pool[22) and constant_pool[23).

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Decompiling Java by Godfrey Nolan


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