Package libcore.util

Class SneakyThrow

java.lang.Object

libcore.util.SneakyThrow

public final class SneakyThrow
extends Object

Exploits a weakness in the runtime to throw an arbitrary throwable without the traditional declaration. This is a dangerous API that should be used with great caution. Typically this is useful when rethrowing throwables that are of a known range of types.

The following code must enumerate several types to rethrow:

 public void close() throws IOException {
     Throwable thrown = null;
     ...

     if (thrown != null) {
         if (thrown instanceof IOException) {
             throw (IOException) thrown;
         } else if (thrown instanceof RuntimeException) {
             throw (RuntimeException) thrown;
         } else if (thrown instanceof Error) {
             throw (Error) thrown;
         } else {
             throw new AssertionError();
         }
     }
 }

With SneakyThrow, rethrowing is easier:

 public void close() throws IOException {
     Throwable thrown = null;
     ...

     if (thrown != null) {
         SneakyThrow.sneakyThrow(thrown);
     }
 }

Method Summary

Modifier and Type	Method	Description
static void	sneakyThrow(Throwable t)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

sneakyThrow

public static void sneakyThrow(Throwable t)