打字猴:1.70044322e+09
1700443220
1700443221 }
1700443222
1700443223 //第二个箱子的气球是拷贝的第一个箱子里的
1700443224
1700443225 Balloon[]box2=Arrays.copyOf(box1,box1.length);
1700443226
1700443227 //修改最后一个气球颜色
1700443228
1700443229 box2[6].setColor(Color.Blue);
1700443230
1700443231 //打印出第一个箱子中的气球颜色
1700443232
1700443233 for(Balloon b:box1){
1700443234
1700443235 System.out.println(b);
1700443236
1700443237 }
1700443238
1700443239 }
1700443240
1700443241 }
1700443242
1700443243 //气球颜色
1700443244
1700443245 enum Color{
1700443246
1700443247 Red, Orange, Yellow, Green, Indigo, Blue, Violet;
1700443248
1700443249 }
1700443250
1700443251 //气球
1700443252
1700443253 class Balloon{
1700443254
1700443255 //编号
1700443256
1700443257 private int id;
1700443258
1700443259 //颜色
1700443260
1700443261 private Color color;
1700443262
1700443263 public Balloon(Color_color, int_id){
1700443264
1700443265 color=_color;
1700443266
1700443267 id=_id;
1700443268
1700443269 }
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