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By: a guest on Apr 18th, 2012  |  syntax: None  |  size: 0.35 KB  |  hits: 6  |  expires: Never
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  1. public class Hoge { // implements Comparable してない
  2.     private int num = 0;
  3.     public Hoge(int num) { this.num = num; }
  4. }
  5.  
  6. @Override
  7. public void onCreate() {
  8.     Set<Hoge> hogeSet = new TreeSet<Hoge>();
  9.  
  10.     hogeSet.add(new Hoge(1)); // ← Gingerbread だとここで例外
  11.     hogeSet.add(new Hoge(2)); // ← froyo 以前だとここで例外
  12. }
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