Created
October 18, 2015 07:28
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Hide checked exceptions in Java Streams
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public static <T> T uncheckCall(Callable<T> callable) { | |
try { return callable.call(); } | |
catch (Exception e) { return sneakyThrow(e); } | |
} | |
public static void uncheckRun(RunnableExc r) { | |
try { r.run(); } catch (Exception e) { sneakyThrow(e); } | |
} | |
public interface RunnableExc { void run() throws Exception; } | |
public static <T> T sneakyThrow(Throwable e) { | |
return Util.<RuntimeException, T>sneakyThrow0(e); | |
} | |
private static <E extends Throwable, T> T sneakyThrow0(Throwable t) throws E { throw (E)t; } | |
// Usage sample | |
//return s.filter(a -> uncheckCall(a::isActive)) | |
// .map(Account::getNumber) | |
// .collect(toSet()); |
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