The java.DoubleAdder.longValue() is an inbuilt method in java that returns the sum() as a long after a narrowing primitive conversion. When the object of the class is created its initial value is zero.
public long longValue()
Parameters:Return value: This method returns the numeric value represented by this object after conversion to long data type.
Below programs illustrate the above method:
the value after longValue() is: 52.0
the value after longValue() is: 62.0
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