程序1:将字符串值映射到整数键。 // 使用Java代码说明entrySet()方法importjava.util.*;publicclassMap_Demo{publicstaticvoidmain(String[]args){// 创建一个空MapMap<Integer,String>map=newHashMap<Integer,String>();// 将字符串值映射到int键ma
TheentrySet()method can be used with thefor-each loopto iterate through each entry of the hashmap. Example 2: entrySet() Method in for-each Loop importjava.util.HashMap;importjava.util.Map.Entry;classMain{publicstaticvoidmain(String[] args){// Creating a HashMapHashMap<String, Integer> n...
示例1:使用HashMap。 // Java code to illustrate theentrySet() methodimportjava.util.*;publicclassSortedMap_Demo{publicstaticvoidmain(String[] args){// Creating an empty TreeMapSortedMap<String, Integer> sotree_map =newTreeMap<String, Integer>();// Mapping int values to string keyssotree_ma...
/** * @param args 参数 */ public static void main(String[] args) { String jsapiTicket = "jsapi_ticket"; // 注意 URL 一定要动态获取,不能 hardcode String url = "http://example.com"; JSONObject ret = sign(jsapiTicket, url); for (Map.Entry entry : ret.entrySet()) { System.ou...
The return type of the method isSet, it returns mappings exist in this HashMap to be viewed in a Set. Example: // Java program to demonstrate the example// of Set entrySet() method of HashMapimportjava.util.*;publicclassEntrySetOfHashMap{publicstaticvoidmain(String[]args){// Instantiates...
Getting a Set View Key-Values in a WeakHashMap of Integer, Object Pairs ExampleThe following example shows the usage of Java WeakHashMap entrySet() method to get a Set view of a Map. We've created a Map object of Integer,Student pairs. Then few entries are added, map is printed. ...
The method call returns a set view of the mappings contained in this table.ExceptionNAGetting EntrySet of Entries of a HashTable of Integer, Integer Pair ExampleThe following example shows the usage of Java Hashtable entrySet() method to get a Set view of a Hashtable. We've created a ...
Example In the following code shows how to use SortedMap.entrySet() method. importjava.util.SortedMap;importjava.util.TreeMap;//fromwww.java2s.compublicclassMain {publicstaticvoidmain(String[] args) { SortedMap<String,Integer> sortedMap =newTreeMap<String,Integer>(); ...
分别使用keySet、entrySet和values的多种写法测试三种场景:遍历key+value、遍历key、遍历value的场景。 遍历key+value keySet遍历key+value(写法1): Iterator<String> iter =map.keySet().iterator();while(iter.hasNext()) { key=iter.next(); value=map.get(key); ...
以下是java.util.EnumMap.entrySet()方法的声明 public Set<Map.Entry<K,V>> entrySet() 参数(Parameters) NA 返回值 (Return Value) 此方法返回此枚举映射中包含的映射的set视图。 异常(Exception) NA 例子(Example) 以下示例显示了java.util.EnumMap.entrySet()方法的用法。 package com.wenjiangs; import ...