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import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.util.Arrays;
import java.util.zip.CRC32;
public class Main {
public static void main(String[] args) throws Exception{
BufferedInputStream is = new BufferedInputStream(new FileInputStream("a.exe"));
byte[] bytes = new byte[1024];
int len = 0;
while ((len = is.read(bytes)) >= 0) {
new CRC32().update(bytes, 0, len);
}
is.close();
System.out.println(Arrays.toString(bytes));
}
}
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