The Java.DoubleAccumulator.longValue() is an inbuilt method in java that returns the current value as a long after a narrowing primitive conversion. It means the initial datatype is double which is explicitly converted into type long.
Syntax:
public long longValue()
Parameters: The method does not accepts any parameter.
Return value: The method returns the current value as a long after a narrowing primitive conversion.
PBelow programs illustrate the above method:
Program 1:
// Java program to demonstrate the// longValue() method import java.lang.*;import java.util.concurrent.atomic.DoubleAccumulator; public class GFG { public static void main(String args[]) { DoubleAccumulator num = new DoubleAccumulator( Double::sum, 0L); // accumulate operation on num num.accumulate(42); num.accumulate(10); // Print before longValue operation System.out.println("Old value is: " + num); // Print after longValue operation System.out.println("Current long value is: " + num.floatValue()); }} |
Output:
Old value is: 52.0 Current long value is: 52.0
Program 2:
// Java program to demonstrate the// longValue() method import java.lang.*;import java.util.concurrent.atomic.DoubleAccumulator; public class GFG { public static void main(String args[]) { DoubleAccumulator num = new DoubleAccumulator( Double::sum, 0L); // accumulate operation on num num.accumulate(26); num.accumulate(45); // Print before longValue operation System.out.println("Old value is: " + num); // Print after longValue operation System.out.println("Current long value is: " + num.floatValue()); }} |
Output:
Old value is: 71.0 Current long value is: 71.0
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