Return all the values in a map:import java.util.HashMap; public class Main { public static void main(String[] args) { HashMap<String, String> capitalCities = new HashMap<String, String>(); capitalCities.put("England", "London"); capitalCities.put("Germany", "Berlin"); capitalCities....
Returns the result of accumulating the given transformation of all values using the given reducer to combine values, or null if none. ReduceValues(Int64, IBiFunction) Returns the result of accumulating all values using the given reducer to combine values, or null if none.Reduce...
10200011 The values method cannot be bound. 示例: let hashMap = new HashMap(); hashMap.set("squirrel", 123); hashMap.set("sparrow", 356); let iter = hashMap.values(); let temp = iter.next().value; while(temp != undefined) { console.log("value:" + temp); temp = i...
values() : Array<*>returns an array with all the values entries() : Array<[*,*]>returns an array with [key,value] pairs size : Numberthe amount of key-value pairs count() : Numberreturns the amount of key-value pairs(deprecated) ...
Note:Use thekeySet()method if you only want the keys, and use thevalues()method if you only want the values: Example // Print keysfor(Stringi:capitalCities.keySet()){System.out.println(i);} Try it Yourself » Example // Print valuesfor(Stringi:capitalCities.values()){System.out.print...
Detail: Field | Constr | Method compact1, compact2, compact3 java.util Class HashMap<K,V>java.lang.Object java.util.AbstractMap<K,V> java.util.HashMap<K,V> Type Parameters: K - the type of keys maintained by this map V - the type of mapped valuesAll...
Method chaining All methods that don't return something, will return the HashMap instance to enable chaining. Examples Assume this for all examples below varmap=newHashMap(); If you're using this within Node, you first need to import the class ...
...HashMap的基本用法 创建HashMap对象 要创建一个HashMap对象,您可以使用如下的方式: import java.util.HashMap; import java.util.Map;...", 1); hashMap.put("banana", 2); hashMap.put("cherry", 3); 获取值 要从HashMap中获取值,可以使用get方法,并传入键: int value...: values) { System...
private static void firstMethod(HashMap<Integer, String> map){ System.out.println("foreach循环进行遍历"); for (Integer key : map.keySet()) { System.out.println("key:"+key+"对应的值为:"+map.get(key)); } } 1. 2. 3. 4.
...HashMap的基本用法创建HashMap对象要创建一个HashMap对象,您可以使用如下的方式: import java.util.HashMap; import java.util.Map;...", 1); hashMap.put("banana", 2); hashMap.put("cherry", 3); 获取值要从HashMap中获取值,可以使用get方法,并传入键: int value...: values) { System.out...