map.put(null,3);for(String key : getKeys(map,3)) { System.out.println(key); } }privatestaticSet<String>getKeys(Map<String, Integer> map, Integer value){ Set<String> result =newHashSet<>();if(map.containsValue(value)) {for(Map.Entry<String, Integer> entry : map.entrySet()) {if...
Integer>map=newHashMap<>();// 添加键值对map.put("Apple",30);map.put("Banana",20);map.put("Orange",25);// 获取所有的键System.out.println("Keys: "+map.keySet());// 获取所有的值System.out.println("Values: "+map.values());// 获取所有...
map.put("password","pass1");// Get keys and valuesfor(Map.Entry<String, String> entry : map.entrySet()) {Stringk=entry.getKey();Stringv=entry.getValue(); System.out.println("Key: "+ k +", Value: "+ v); }// Get all keysSet<String> keys = map.keySet();for(String k : ...
UserAction .java 1. package cn.qlq.Action; import java.sql.SQLException; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.servlet.http.HttpServletRequest; import org.apache.struts2.ServletActionContext; import org.springframework.beans.factory.annotation.Autowired...
Get Keys from a Java Map To retrieve just keys, if you don't really need any information from the values, instead of the entry set, you can get the key set: for(String key: map.keySet()){ System.out.println(key); } Output: ...
The simplest way to get the keys from aHashMapin Java is to invoke thekeySet()method on yourHashMapobject. It returns asetcontaining all the keys from theHashMap. In the example below, we will first create aHashMapobject, insert some values in it, and then usekeySet()to get the keys...
- Iterate through the List and pull out the corresponding values from the Map Is that any good? James Sabre Ranch Hand Posts: 781 I like... posted 14 years ago Matthew Brown wrote:The easiest approach I can think of off the top of my head is: - Keep all your keys in a separa...
Set<String>keys= jedis.keys(root + Constants.ANY_VALUE);if(keys!=null&&keys.size() >0) {for(String key :keys) { Map<String, String> values = jedis.hgetAll(key);if(values !=null&& values.size() >0) {booleandelete =false;longnow = System.currentTimeMillis();for(Map.Entry<String,...
示例3: getOSKey ▲点赞 3▼ importjavax.swing.InputMap;//导入方法依赖的package包/类privateJavaAgentKeysgetOSKey(){ KeyStroke selectall =null; InputMap inputMap =newJTextField().getInputMap(); KeyStroke[]allKeys= inputMap.allKeys();for(KeyStroke keyStroke :allKeys) { ...
Returns a view of the portion of this map whose keys range from fromKey, inclusive, to toKey, exclusive. C# 複製 [Android.Runtime.Register("subMap", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/util/SortedMap;", "GetSubMap_Ljava_lang_Object_Ljava_lang_Object_Handler:Java.Util.ISorted...