How to handle a static final field initializer that throws checked exception

user_223339 0
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I am facing a use case where I would like to declare a static finalfield with an initializer statement that is declared to throw a checked exception. Typically, it'd look like this:

public static final ObjectName OBJECT_NAME = new ObjectName("foo:type=bar");

The issue I have here is that the ObjectName constructor may throw various checked exceptions, which I don't care about (because I'd know my name is valid, and it's allright if it miserably crashes in case it's not). The java compiler won't let me just ignore this (as it's a checked exception), and I would prefer not to resort to:

public static final ObjectName OBJECT_NAME;
static {
    try {
        OBJECT_NAME = new ObjectName("foo:type=bar");
    } catch (final Exception ex) {
        throw new RuntimeException("Failed to create ObjectName instance in static block.", ex);
    }
}

Because static blocks are really, really difficult to read. Does anyone have a suggestion on how to handle this case in a nice, clean way?

initializer final static exception java
4 Answers

You can use a method annotated with Lombok's @SneakyThrows

public static final ObjectName OBJECT_NAME = createObjectName();

@SneakyThrows(SomeException.class)
private static ObjectName createObjectName() {
    return new ObjectName("foo:type=bar");
}

This annotation makes a checked exception behaves like an unchecked one.

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