Tool to remove optional debugging attributes from class files to reduce class size. This process can reduce class size by 25% uncompressed.
Deletes the following attributes from class files:
- SourceFile - the name of the file of this class when it was compiled (usually ends with .java)
- SourceDebugExtension - arbitrary debug data, mostly unused
- LineNumberTable - line numbers of code, used for stack traces
- LocalVariableTable - names and types of variables, used for NullPointerException
- LocalVariableTypeTable - ditto, for generic variables
- Deprecated - used as a hint to a compiler when this class is linked, not the same as the @Deprecated annotation
Compile with zig build -Drelease-fast=true, the binary is placed in zig-out/bin/jvm-strip
Usage: jvm-strip <file> where <file> is the .class file you want to be stripped. The output is placed in output.class.