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]

翻译自: https://www.includehelp.com/java/linkedhashmap-values-method-with-example.aspx