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public interface: Callable [javadoc | source]

All Known Implementing Classes:
    PrivilegedCallable, PrivilegedCallableUsingCurrentClassLoader, RunnableAdapter, CompilationTask

A task that returns a result and may throw an exception. Implementors define a single method with no arguments called call.

The Callable interface is similar to java.lang.Runnable , in that both are designed for classes whose instances are potentially executed by another thread. A Runnable, however, does not return a result and cannot throw a checked exception.

The Executors class contains utility methods to convert from other common forms to Callable classes.

Method from java.util.concurrent.Callable Summary:
Method from java.util.concurrent.Callable Detail:
 public V call() throws Exception
    Computes a result, or throws an exception if unable to do so.