LinkedHashMap类的values()方法 (LinkedHashMap 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 exist in this LinkedHashMap to be viewed in a Collection.

  values()方法用于获取此LinkedHashMap中存在的所有值以在Collection中进行查看。

• 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 returning values.

  values()方法在返回值时不会引发异常。

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 the method is Collection, it returns Collection view of all the values exist in this LinkedHashMap.

该方法的返回类型为Collection ，它返回此LinkedHashMap中存在的所有值的Collection视图。

Example:

例：

// Java program to demonstrate the example // of Collection values()  method of  LinkedHashMap import java.util.*;public class ValuesOfLinkedHashMap {
       public static void main(String[] args) {
           // Instantiates a LinkedHashMap object         Map < Integer, String > map = new LinkedHashMap < Integer, String > ();        // By using put() method is to add        // key-value pairs in a LinkedHashMap        map.put(10, "C");        map.put(20, "C++");        map.put(50, "JAVA");        map.put(40, "PHP");        map.put(30, "SFDC");        // Display LinkedHashMap        System.out.println("LinkedHashMap: " + map);        // By using values() method is to return        // the values exists in this LinkedHashMap        // to be viewed in a collection        Collection co = map.values();        // Display collection        System.out.print("map.values(): " + co);    }}

Output

输出量

LinkedHashMap: {10=C, 20=C++, 50=JAVA, 40=PHP, 30=SFDC}map.values(): [C, C++, JAVA, PHP, SFDC]

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