import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
public class MainClass {
public static void main(String[] argv) {
try {
FileReader fr = new FileReader("data");
LineNumberReader lnr = new LineNumberReader(fr);
String s;
while ((s = lnr.readLine()) != null) {
System.out.println(lnr.getLineNumber() + " : " + s);
}
lnr.close();
fr.close();
} catch (IOException x) {
}
}
}
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