When looking at a jar file with JD-GUI I keep getting some sort of display error. It seems to replace variable names/identifiers with the symbol ��� (which in JD-GUI looks like a red snowman, picture attached). Any idea of how to fix this? I tried googling around but wasn't able to describe my situation very well and could therefore not find anyone with the same problem. Thanks in advance! 
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It looks like the identifier is unicode. You can fix that by using a decompiler like Procyon that escapes unicode. (You should be using Procyon anyway because JD-GUI is a poor decompiler).
Antimony
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The class file should have be encrypted, you can see from the variable name and method name, I think the best way is finding an open source solution.
winterfall
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The code is obfuscated but that hasn't caused the appearance of the strange symbol in the past. What do you mean by encryption? – May 13 '15 at 03:07
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You can see from the assginments, this.i = xx.a(xx, xx), I think if somebody name a method using "a", and variables i,s,j,l, nobody can understand that code when reading it, this should have been encrypted at compile time, and the red snowman is just a variable reference name, just not using english. – winterfall May 13 '15 at 03:10
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I doubt that they used that symbol to identify a variable since it is used multiple times to refer to what should be different variables. The code was definitely obfuscated. – May 13 '15 at 03:20
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Looks like a snow man :). Posting rest of could would help but if you don't want to, use jad and maybe fern flower than compare the two. One should have the "right" naming
0x2B
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