java.util.concurrent.atomic.AtomicInteger.incrementAndGet()是Java中的一种内置方法,该方法将先前值增加1,并在更新后返回数据类型为int的值。

用法:

public final int incrementAndGet()

参数:该函数不接受单个参数。

返回值:该函数将执行增量操作后的值返回到先前的值。

以下程序演示了该功能:

示例1:

// Java program that demonstrates
// the incrementAndGet() function
import java.util.concurrent.atomic.AtomicInteger;
public class GFG {
public static void main(String args[])
{
// Initially value as 0
AtomicInteger val
= new AtomicInteger(0);
System.out.println("Previous value: "
+ val);
// Incremenet and get
int 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.AtomicInteger;
public class GFG {
public static void main(String args[])
{
// Initially value as 18
AtomicInteger val
= new AtomicInteger(18);
System.out.println("Previous value: "
+ val);
// Incremenet and get new value
int res = val.incrementAndGet();
// Prints the updated value
System.out.println("Current value: "
+ res);
}
}

输出:

Previous value: 18

Current value: 19