publicvoiditerateUsingIteratorAndValues(Map<String, Integer> map){ Iterator<Integer> iterator = map.values().iterator();while(iterator.hasNext()) {Integervalue=iterator.next(); System.out.println("value :"+ value); } } 5. Using Lambdas and Stream API Since version 8, Java has introduced t...
1Map<Integer, String> m =newHashMap<Integer, String>();2for(Map.Entry<Integer, String>entry : m.entrySet()){3System.out.println("Key: " + entry.getKey() + ", Value: " +entry.getValue());4}567Iterator<Map.Entry<Integer, String>> iterator =m.entrySet().iterator();8while(iterat...
} 2.If you're only interested in the keys, you can iterate through the "keySet()" of the map: Map<String, Object> map =...;for(String key : map.keySet()) {//...} 3.If you only need the values, use "value()": for(Object value : map.values()) {//...} 4.Finally, i...
Stream<Integer>fibonacci=Stream.iterate(newint[]{0,1},t->newint[]{t[1],t[0]+t[1]}).limit(10)// Limit to avoid infinite stream.map(t->t[0]);fibonacci.forEach(System.out::println); The program output: 0 1 1 2 3 5 8 13 21 34 2.2.iterate()in Java 9 This example generate...
In Java How to Find Duplicate Elements from List? (Brute Force, HashSet and Stream API) How to Iterate Through Map and List in Java? Example attached (Total 5 Different Ways) How to Read a File line by line using Java Stream – Files.lines() and Files.newBufferedReader() Utility APIs...
Using a forEach method: If you are using Java 8 or later, you can use the forEach method of the Map interface to iterate over the entries in the Map. This method takes a BiConsumer as an argument, which is a functional interface that represents an operation that takes two arguments and...
a hash map in Java? How do I iterate a hash map in Java?How do I iterate a hash map in Java?Brian L. Gorman
Map<Integer, String> beers =newHashMap<Integer, String>(); beers.put(1,"La Chouffe"); beers.put(2,"Stella Artois"); beers.put(3,"Jupiler"); beers.put(4,"Westmalle Tripel");// Using iteratorIterator it = beers.entrySet().iterator();while(it.hasNext()){ ...
IntStream.iterate(0, i -> i + 1).flatMap( i -> IntStream.of(i * sum, i * sum + a, i * sum + a + b, i * sum + a + b + c) ).limit(10); 我让你把它推广到任何int[]的数字。 点击这里! (查看英文版本获取更加准确信息)...
Java上遍历HashMap的五种最佳方式如下使用Iterator遍历HashMap EntrySet使用Iterator遍历HashMap KeySet使用For-each循环迭代HashMap使用Lambda表达式遍历HashMap使用Stream API遍历HashMap示例代码如下package imoocStudy; importjava.util.HashMap; import j java iterate ...