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import javax.swing.JOptionPane;
import javax.swing.JFrame;
import java.nio.file.Files;
import java.nio.file.Path;
import java.io.IOException;
class PaneThing {
JFrame f;
public PaneThing(String fname) throws IOException {
String content = Files.readString(Path.of(fname));
f = new JFrame();
JOptionPane.showMessageDialog(f, content);
}
}
public class Main {
public static void main(String[] args) {
String fname = "hej.txt";
if (args.length > 0) {
fname = args[0];
}
try {
PaneThing pt = new PaneThing(fname);
} catch (Exception e) {
System.err.printf("error: %s%n", e);
System.exit(1);
}
}
}
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