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–