How do I efficiently iterate over each entry in a Java Map

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My question is to know what is the most effective way of going through the map if I have an object implementing the Map interface in Java? If I wish to iterate over every pair contained within it, how do I go through the map? Is there any difference when the ordering of elements depends on the specific map implementation which I have for the interface?
Feb 8 in Java by Rahul
• 8,980 points
49 views

1 answer to this question.

0 votes

To answer your questions, use the following line of code:-

 

Map<String, String> map = ... 
for (Map.Entry<String, String> entry : map.entrySet()) { 
System.out.println(entry.getKey() + "/" + entry.getValue()); 

}

On Java 10+:

for (var entry : map.entrySet()) { 

       System.out.println(entry.getKey() + "/" + entry.getValue()); 
}
answered Feb 8 by Soham
• 8,730 points

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