Java 8 foreach example program

• Java 8 introduces for each loop.
• before that lest see an example of how normal java for each loop.

#1: Java Example program which explain use of for each loop.

1. package com.instanceofjava.java8;
2. 
   
3. import java.util.HashMap;
4. import java.util.Map;
5. 
   
6. public class ForEachLoop {
7. /**
8. * @author www.Instanceofjava.com
9. * @category interview questions
10. * 
11. * Description: java 8 for each loop
12. *
13. */
14. public static void main(String[] args) {
16. Map<String, Integer> stumarks = new HashMap<>();
17. stumarks.put("Sai", 65);
18. stumarks.put("Vamshi", 65);
19. stumarks.put("Mahendar", 76);
20. stumarks.put("Muni", 87);
21. stumarks.put("Manohar", 90);
23. 
    
24. for (Map.Entry<String, Integer> entry : stumarks.entrySet()) {
25. System.out.println(entry.getKey() + " marks : " + entry.getValue());
26. }
27. 
    
28. }
29. 
    
30. }

Output:

2. Muni marks : 87
3. Vamshi marks : 65
4. Mahendar marks : 76
5. Sai marks : 65
6. Manohar marks : 90

#2: Java Example program which explains the use of for each loop in java 8

• In the above program we used for each loop to get key value pairs of map.
• Same thing will be done in java 8 by using stumarks.forEach((k,v)->System.out.println( k + " marks : " + v));