Java中的 AtomicReferenceArray set() 方法及示例
AtomicReferenceArray类的set()方法用于将索引 i 处的元素的值设置为 newValue。索引 i 和 newValue 都作为参数传递给该方法。此方法使用读取的内存语义设置值,就好像变量被声明为 volatile 类型的变量一样。
句法:
public final void set(int i, E newValue)
参数:此方法接受:
- i是执行操作的 AtomicReferenceArray 的索引,
- newValue是要设置的新值。
返回值:此方法不返回任何内容。
下面的程序说明了 set() 方法:
方案一:
// Java program to demonstrate
// AtomicReferenceArray.set() method
import java.util.concurrent.atomic.*;
public class GFG {
public static void main(String[] args)
{
// create an atomic reference object.
AtomicReferenceArray ref
= new AtomicReferenceArray(5);
// set some value and print
ref.set(0, 2345);
ref.set(1, 543);
ref.set(2, 322);
System.out.println("Value of index 0 = "
+ ref.get(0));
System.out.println("Value of index 1 = "
+ ref.get(1));
System.out.println("Value of index 2 = "
+ ref.get(2));
}
}
输出:
Value of index 0 = 2345
Value of index 1 = 543
Value of index 2 = 322
方案二:
// Java program to demonstrate
// AtomicReferenceArray.set() method
import java.util.concurrent.atomic.*;
public class GFG {
public static void main(String[] args)
{
// create an atomic reference object.c
AtomicReferenceArray ref
= new AtomicReferenceArray(5);
// set some value
ref.set(0, "C");
ref.set(1, "PYTHON");
ref.set(2, "TS");
ref.set(3, "C++");
ref.set(4, "C");
// print
for (int i = 0; i < 5; i++) {
System.out.println(ref.get(i));
}
}
}
输出:
C
PYTHON
TS
C++
C
参考: https: Java/util/concurrent/atomic/AtomicReferenceArray.html#set(int, E)