When you designate the file path, write this way:
C:\\Users\\John\\Pictures\\blog\\1alignment_panel.gif
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
public class TestMime {
public static void main(String[] args) throws IOException {
BufferedReader buffreader1 = new BufferedReader(new InputStreamReader(System.in));
String mpath = "";
mpath = buffreader1.readLine();
File file = new File(mpath);
Path source = Paths.get(file.getPath());
System.out.println(Files.probeContentType(source));
}
}
