![]() ![]() It’s not only the string, but also bytes that represent the tag and length. From that I gather that the string I want to modify is inside a pool of constants.Īnd here I can see which bytes inside the. So my cursor was on the 10th byte (bytes) of the string, which is part of template variable cp_info constant_pool. Which selects the corresponding template variable: To find the template result field I need to modify, I position my cursor on the string I want to modify inside the ASCII dump, I right-click and select “Jump To Template Variable”: class template, hoping that the template will make it clear to me what needs to be changed. ![]() class files, that why I’m using 010 Editor’s. I’m not familiar with the internal structure of. java files remain valid: for example, if there is something in that structure like a field length, I need to change the field length too. Into something like “1.2 (20210922a)”.ĭoing so will make the string longer, thus I need to add a byte to the file (trivial), but I also need to make sure that the binary structure of. For example, the first field I selected here, u4 magic, is the magic header of a. Under the hex/ascii dump, the template results are displayed: a set of nested fields that match the internal structure of. Here is how you can apply a template manually, in case the file extension is not the original extension:Īnd this is how the template results look like: That’s what I wanted to know: is there a template for. class extension and installed and ran the template for. When opening the file, 010 Editor recognized the. Here is the file opened inside the editor: Before going the route of decompiling / editing / recompiling, I tried with 010 Editor. ![]() class file: extend a string inside that class. It’s a powerful binary editor with scripting and templates. 010 Editor is one of few commercial applications that I use daily. ![]()
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