loop in java 8
List<Integer> data = new ArrayList<>();
//Indexed Loop
for(int i = 0,size=data.size();i<size;i++){
System.out.println(data.get(i));
}
//For each loop
for(Integer element : data){
System.out.println(element);
}
//Using forEach
data.forEach(System.out::println);
//Using Stream
data.stream().forEach(System.out::println)
//While loop
int i = 0;
while(i<data.size()){
System.out.println(data.get(i++));
}java 8 map foreach
public void iterateUsingIteratorAndEntry(Map<String, Integer> map) {
Iterator<Map.Entry<String, Integer>> iterator = map.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry<String, Integer> entry = iterator.next();
System.out.println(entry.getKey() + ":" + entry.getValue());
}
}Copyright © 2021 Codeinu
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