Java.util.concurrent.atomic.AtomicLong.incrementAndGet()是Java中的一种内置方法,该方法将先前值增加1,并在更新后返回long数据类型的值。
用法:
public final long incrementAndGet()
参数:该函数不接受单个参数。
返回值:该函数将执行增量运算之后的值返回。
以下示例程序旨在说明上述方法:
示例1:
// Java program that demonstrates
// the incrementAndGet() 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);
// Incremenet and get
long res
= val.incrementAndGet();
// Prints the updated value
System.out.println("Current value: "
+ res);
}
}
输出:
Previous value: 0
Current value: 1
示例2:
// Java program that demonstrates
// the incrementAndGet() 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);
// Incremenet and get new value
long res = val.incrementAndGet();
// Prints the updated value
System.out.println("Current value: "
+ res);
}
}
输出:
Previous value: 18
Current value: 19