Java AtomicReferenceArray length()用法及代碼示例

AtomicReferenceArray類的length()方法用於返回此AtomicReferenceArray的長度。

用法:

public final int length()

參數：此方法不接受任何內容。

返回值：此方法返回表示此AtomicReferenceArray長度的整數。

以下示例程序旨在說明length()方法：
程序1:

// Java program to demonstrate 
// AtomicReferenceArray.length() method 
  
import java.util.concurrent.atomic.*; 
  
public class GFG { 
  
    public static void main(String[] args) 
    { 
  
        // create an atomic reference object. 
        AtomicReferenceArray<Integer> ref 
            = new AtomicReferenceArray<Integer>(5); 
  
        // print the length 
        int length = ref.length(); 
        System.out.println( 
            "length of AtomicReferenceArray = "
            + length); 
    } 
}

輸出：

length of AtomicReferenceArray = 5

程序2:

// Java program to demonstrate 
// AtomicReferenceArray.length() method 
  
import java.util.concurrent.atomic.*; 
  
public class GFG { 
  
    public static void main(String[] args) 
    { 
  
        // create a array of Strings 
        String[] names 
            = { "AMAN", "AMAR", "SURAJ" }; 
  
        // create an atomic reference object. 
        AtomicReferenceArray<String> ref 
            = new AtomicReferenceArray<String>(names); 
  
        // print the length 
        int length = ref.length(); 
        System.out.println( 
            "length of AtomicReferenceArray = "
            + length); 
    } 
}

輸出：

length of AtomicReferenceArray = 3

參考文獻： https://docs.oracle.com/javase/10/docs/api/java/util/concurrent/atomic/AtomicReferenceArray.html#length()

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