Constructors Throwing Exceptions : Constructor « Object Oriented « SCJP

1. SCJP
2. Object Oriented
3. Constructor

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;

class HelpFile {

  public HelpFile(String filename) throws IOException {
    File f = new File(filename);
    if (!f.exists())
      throw new FileNotFoundException(filename);
    // normal construction continues
  }
}