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Jun 8th, 2018
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Java 5 0.67 KB | None | 0 0
  1. Object[] oa = new Object[100];
  2. Collection<Object> co = new ArrayList<Object>();
  3. fromArrayToCollection(oa, co);// T는 Object
  4. String[] sa = new String[100];
  5. Collection<String> cs = new ArrayList<String>();
  6. fromArrayToCollection(sa, cs);// T는  String
  7. fromArrayToCollection(sa, co);// T는 Object
  8. Integer[] ia = new Integer[100];
  9. Float[] fa = new Float[100];
  10. Number[] na = new Number[100];
  11. Collection<Number> cn = new ArrayList<Number>();
  12. fromArrayToCollection(ia, cn);// T는 Number
  13. fromArrayToCollection(fa, cn);// T는 Number
  14. fromArrayToCollection(na, cn);// T는 Number
  15. fromArrayToCollection(na, co);// T는 Object
  16. fromArrayToCollection(na, cs);// 컴파일 에러
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