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try {
  FileInputStream stream = new FileInputStream(myFile);               
+                                                                 
  DataInputStream input  = new DataInputStream(stream);               
+                                                                 
...
catch (Exception e) {
    System.err.println("Could not read from file");
}

open INPUT, "<", $input or die "Cannot open ($input) for reading: $!";
print <INPUT>;
close INPUT or die "Could not close $input: $!";