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Tags
#bloch-effective-java-2ed #java #java-generics
Question
How to cast raw type Set to typesafe Set using generics?

if (o instanceof Set) { // Raw type
  // here
}

Answer
Use unbounded wildcard type:

if (o instanceof Set) { // Raw type
  Set<?> m = (Set<?>) o; // Wildcard type
  // rest of the code
}


Tags
#bloch-effective-java-2ed #java #java-generics
Question
How to cast raw type Set to typesafe Set using generics?

if (o instanceof Set) { // Raw type
  // here
}

Answer
?

Tags
#bloch-effective-java-2ed #java #java-generics
Question
How to cast raw type Set to typesafe Set using generics?

if (o instanceof Set) { // Raw type
  // here
}

Answer
Use unbounded wildcard type:

if (o instanceof Set) { // Raw type
  Set<?> m = (Set<?>) o; // Wildcard type
  // rest of the code
}

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pdf

owner: piotr.wasik - (no access) - Effective Java (Joshua Bloch), 2ed, p114

Summary

statusnot learnedmeasured difficulty37% [default]last interval [days]               
repetition number in this series0memorised on               scheduled repetition               
scheduled repetition interval               last repetition or drill

Details

No repetitions


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