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📜  Java中的 AtomicLong set() 方法及示例

📅  最后修改于: 2022-05-13 01:55:08.427000             🧑  作者: Mango

Java中的 AtomicLong set() 方法及示例

Java.util.concurrent.atomic.AtomicLong.set()是Java中的一个内置方法,它更新先前的值并将其设置为在参数中传递的新值。

句法:

public final void set(long newVal)

参数:该函数接受一个要更新的强制参数newVal

返回值:该函数不返回任何内容。

下面的程序说明了上述方法:

方案一:

// Java program that demonstrates
// the set() function
  
import java.util.concurrent.atomic.AtomicLong;
  
public class GFG {
    public static void main(String args[])
    {
  
        // Initially value as 0
        AtomicLong val = new AtomicLong(0);
  
        System.out.println("Previous value: "
                           + val);
  
        val.set(10);
  
        // Prints the updated value
        System.out.println("Current value: "
                           + val);
    }
}
输出:
Previous value: 0
Current value: 10

方案二:

// Java program that demonstrates
// the set() function
  
import java.util.concurrent.atomic.AtomicLong;
  
public class GFG {
    public static void main(String args[])
    {
  
        // Initially value as 18
        AtomicLong val = new AtomicLong(18);
  
        System.out.println("Previous value: "
                           + val);
  
        val.set(200);
  
        // Prints the updated value
        System.out.println("Current value: "
                           + val);
    }
}
输出:
Previous value: 18
Current value: 200

参考: https: Java/util/concurrent/atomic/AtomicLong.html#set–