Equivalent of the C# keyword 'as' in Java

c#, casting, java

Solution

public static <T> T as(Class<T> t, Object o) {
  return t.isInstance(o) ? t.cast(o) : null;
}

Usage:

MyType a = as(MyType.class, new MyType());   
// 'a' is not null

MyType b = as(MyType.class, "");   
// b is null

Problem

In Java, is it possible to attempt a cast and get back `null` if the cast fails?

Original source

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