The java.util.concurrent.atomic.AtomicInteger.getAndDecrement() is an inbuilt method in java that decreases the given value by one and returns the value before updation which is of data-type int.
Syntax:
public final int getAndDecrement()
Parameters: The function does not accepts a single parameter.
Return value: The function returns the value before decrement operation is performed to the previous value.
Program below demonstrates the function:
Program 1:
// Java program that demonstrates // the getAndDecrement() 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 );
// Decreases and gets
// the previous value
int res
= val.getAndDecrement();
// Prints the updated value
System.out.println( "Previous value: "
+ res);
System.out.println( "Current value: "
+ val);
}
} |
Output:
Previous value: 0 Current value: -1
Program 2:
// Java program that demonstrates // the getAndDecrement() 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 );
// Decreases 1 and gets
// the previous value
int res = val.getAndDecrement();
// Prints the updated value
System.out.println( "Previous value: "
+ res);
System.out.println( "Current value: "
+ val);
}
} |
Output:
Previous value: 18 Current value: 17