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  1. class Program {	
  2. 	public static void main(String... args) throws Exception {
  3. 		// 通常の使い方
  4. 		label1:
  5. 			while (true) {
  6. 				while (true) {
  7. 					break label1; 
  8. 				}
  9. 			}
  10.  
  11. 		// ループじゃなくても名前付きbreak
  12. 		label2: {
  13. 			break label2;
  14. 		}
  15.  
  16. 		// ループじゃないと名前無しでbreakできない
  17. 		label3: {
  18. //			break; // compile error
  19. 		}
  20.  
  21. 		// ループじゃないと名前無しでbreakできない
  22. 		{
  23. //			break; // compile error
  24. 		}
  25.  
  26. 		while (true) {
  27. 			label4: {
  28. 				break; // 名前無しのbreakは常にループの内側を抜ける
  29. 			}
  30. 			System.out.printf("never executed\n");	
  31. 		}
  32. 	}
  33. }
  34.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
Main.java:30: error: unreachable statement
			System.out.printf("never executed\n");	
			^
1 error
stdout 
Standard output is empty
https://ideone.com/oJ6noS
language:
Java (12.0.1)
created:
8 years ago
visibility:
public

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