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View Compilation Error

0_0_32723637_20114\Main.java:12: 错误: 找不到符号
				Set<Entry<Integer,Integer>> entrySet = map.entrySet();
				    ^
  符号:   类 Entry
  位置: 类 Main
0_0_32723637_20114\Main.java:13: 错误: 找不到符号
				for(Entry<Integer,Integer> ent:entrySet) {
				    ^
  符号:   类 Entry
  位置: 类 Main
0_0_32723637_20114\Main.java:25: 错误: 找不到符号
			Set<Entry<Integer,Integer>> entrySet = map.entrySet();
			    ^
  符号:   类 Entry
  位置: 类 Main
0_0_32723637_20114\Main.java:26: 错误: 找不到符号
			for(Entry<Integer,Integer> ent:entrySet) {
			    ^
  符号:   类 Entry
  位置: 类 Main
4 个错误


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