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    <p>This construction is illegal, as you have discovered. Members whose constructors throw checked exceptions cannot be constructed except when in a context that allows exception handling, such as a constructor, an instance initializer, or (for a static member) a static initializer.</p> <p>So this would be a legal way to do it:</p> <pre><code>public class MyClass { MyFileWriter x; { try { x = new MyFileWriter("foo.txt"); } catch (IOException ex) { ex.printStackTrace(); } } ... } </code></pre> <p>Legal, but rather ugly. I would prefer either initializing it in the constructor and declaring the exception there, or else making the user call a method to explicitly initialize it. But if the user must initialize it, you must then account in any dependent methods for the possibility of the object's being invalid.</p> <p>If you are writing <code>MyClass</code> as a wrapper for <code>MyFileWriter</code>, I would say to do the initialization in the constructor. Otherwise, I would first question whether it is necessary to have a writer open during the object's entire lifetime. It may be possible to refactor this away.</p> <p><strong>Edit:</strong> When I was writing this, the "<code>static</code>" hadn't been added to the field. This changes things quite a bit: I now would like to know why on earth you want to have a writer open for the <em>classloader's</em> entire lifetime. How could it ever be closed?</p> <p>Is this a home-grown logging system of some sort? If so, I'd encourage you to have a look at <a href="http://java.sun.com/javase/6/docs/api/java/util/logging/package-summary.html" rel="nofollow noreferrer"><code>java.util.logging</code></a> or any of the many fine third-party logging frameworks around.</p>
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