java 方法 示例

集合類syncList()方法 (Collections Class synchronizedList() method)

• synchronizedList() method is available in java.util package.

  syncList()方法在java.util包中可用。

• synchronizedList() method is used to return the synchronized view of the given list (l).

  syncedList()方法用于返回給定列表( l )的同步視圖。

• synchronizedList() method is a static method, it is accessible with the class name and if we try to access the method with the class object then also we will not get any error.

  synchronizedList()方法是一個靜態方法，可以使用類名進行訪問，如果嘗試使用類對象訪問該方法，則也不會出現任何錯誤。

• synchronizedList() method does not throw an exception at the time of returning a synchronized list.

  返回同步列表時，syncedList ()方法不會引發異常。

Syntax:

句法：

    public static List synchronizedList(List l);

Parameter(s):

參數：

• List l – represents the list to viewed in synchronized list.

  列表l –表示要在同步列表中查看的列表。

Return value:

返回值：

The return type of this method is List, it returns synchronized view of the given list.

此方法的返回類型為List ，它返回給定列表的同步視圖。

Example:

例：

// Java program to demonstrate the example 
// of List synchronizedList() method of Collections
import java.util.*;
public class SynchronizedListOfCollections {
public static void main(String args[]) {
// Instatiates a array list object
List < Integer > arr_l = new ArrayList < Integer > ();
// By using add() method is to add
// objects in an array list 
arr_l.add(10);
arr_l.add(20);
arr_l.add(30);
arr_l.add(40);
arr_l.add(50);
// Display ArrayList
System.out.println("Array List: " + arr_l);
// By using SynchronizedList() method is to
// represent the array list in synchronized view
Collection co = Collections.synchronizedList(arr_l);
// Display Synchronized ArrayList
System.out.println("Collections.synchronizedList(arr_l): " + arr_l);
}
}

Output

輸出量

Array List: [10, 20, 30, 40, 50]
Collections.synchronizedList(arr_l): [10, 20, 30, 40, 50]

翻譯自: https://www.includehelp.com/java/collections-synchronizedlist-method-with-example.aspx

java 方法 示例