java enummap_Java EnumMap values（）方法与示例

╰半夏微凉° 2023-03-05 12:59 16阅读 0赞

java enummap

## EnumMap类values()方法 **(**EnumMap Class values() method**)** ##

*  **values() method** is available in java.util package.
    
    **values()方法**在java.util包中可用。
 *  **values() method** is used to get all the values in a Collection view of this enum map.
    
    **values()方法**用于获取此枚举映射的Collection视图中的所有值。
 *  **values() method** is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
    
    **values()方法**是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
 *  **values() method** does not throw an exception at the time of collecting values in a Collection.
    
    在集合中收集值时， **values()方法**不会引发异常。

**Syntax:**

**句法：**

public Collection values();

**Parameter(s):**

**参数：**

*  It does not accept any parameter.
    
    它不接受任何参数。

**Return value:**

**返回值：**

The return type of this method is Collection, it gets the Collection view of the values exists in this enum map.

此方法的返回类型为Collection ，它获取此枚举映射中存在的值的Collection视图。

**Example:**

**例：**

// Java program to demonstrate the example 
    // of Collection values() method of EnumMap
    
    import java.util.*;
    
    public class ValuesOfEnumMap {
        
        public enum Colors {
        
            RED,
            BLUE,
            PINK,
            YELLOW
        };
        public static void main(String[] args) {
        
            // We are creating an EnumMap object
            EnumMap < Colors, String > em =
                new EnumMap < Colors, String > (Colors.class);
    
            // By using put() method is to
            // add the linked values in an
            // EnumMap
            em.put(Colors.RED, "1");
            em.put(Colors.BLUE, "2");
            em.put(Colors.PINK, "3");
            em.put(Colors.YELLOW, "4");
    
            // Display EnumMap
            System.out.println("EnumMap: " + em);
    
            // By using values() method isto
            // represent the values element exists in an 
            // EnumMap to be viewed in a Collection object
            Collection val_ele = em.values();
    
            // Display values collection view of EnumMap
            System.out.println("em.values(): " + val_ele);
        }
    }

**Output**

**输出量**

EnumMap: {RED=1, BLUE=2, PINK=3, YELLOW=4}
    em.values(): [1, 2, 3, 4]

> 翻译自: [https://www.includehelp.com/java/enummap-values-method-with-example.aspx][https_www.includehelp.com_java_enummap-values-method-with-example.aspx]

java enummap

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