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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.Map;
  4. import java.util.Map.Entry;
  5. import java.util.function.Consumer;
  6.  
  7. public class BBBB {
  8.  
  9. 	public void ExampleFoo() {
  10.  
  11. 		Consumer<Entry<Student, Integer>> action = new Consumer<Entry<Student, Integer>>() {
  12. 			@Override
  13. 			public void accept(Entry<Student, Integer> t) {
  14. 				Student s = t.getKey();
  15. 				int i = t.getValue();
  16. 				//
  17. 				// your code goes here
  18. 				//
  19. 			}
  20. 		};
  21.  
  22. 		for (Classroom kumi : Classroom.values()) {
  23. 			mainList.entrySet().stream()
  24. 				.filter(t -> t.getKey().getClassroom() == kumi)
  25. 				.forEach(action);
  26. 		}
  27. 	}
  28.  
  29. 	Map<Student, Integer> mainList;
  30.  
  31. 	class Student {
  32. 		Classroom kumi;
  33. 		int number;
  34. 		String name;
  35.  
  36. 		public Classroom getClassroom() {
  37. 			return kumi;
  38. 		}
  39. 	}
  40.  
  41. 	enum Classroom {
  42. 		Kumi_1("1組"), Kumi_2("2組"), Kumi_n("n組");
  43.  
  44. 		private String value;
  45.  
  46. 		private Classroom(String value) {
  47. 			this.value = value;
  48. 		}
  49.  
  50. 		public String getValue() {
  51. 			return value;
  52. 		}
  53. 	}
  54. }
  55.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
Main.java:7: error: class BBBB is public, should be declared in a file named BBBB.java
public class BBBB {
       ^
1 error
stdout 
Standard output is empty
https://ideone.com/FWkyJv
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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