Long longValue() Method in Java Last Updated : 03 Jan, 2023 Comments Improve Suggest changes Like Article Like Report The java.lang.Long.longValue() is an inbuilt method of the Long class in Java which returns the value of this Long object as a long after the conversion.Syntax: public long longValue() Parameters: This method does not take any parameters.Return Value: This method will return the numeric value represented by this object after conversion to long type.Examples: Input: 5366623 Output: (Long) 5366623 Input: -6723887 Output: (Long) -6723887 Explanation: When the number is passed in this object it will convert that to long and gives the value like, Long lobject = new Long(5366623) It will return 5366623 as long. Below programs illustrate the working of java.lang.Long.longValue() method. Program 1: For a positive number. java // Java program to illustrate the // java.lang.Long.longValue() method import java.lang.*; public class Geek { public static void main(String[] args) { Long lobject = new Long(77387187); // It will return the value of this Long as a long long nl = lobject.longValue(); System.out.println("The Value of nl as long is = " + nl); Long lobject2 = new Long(-6723887); // It will return the value of this Long as a long long nl2 = lobject2.longValue(); System.out.println("The Value of nl2 as long is = " + nl2); } } Output: The Value of nl as long is = 77387187 The Value of nl2 as long is = -6723887 Program 2: For a very large no. // It will produce compile time error. java // Java program to illustrate the // java.lang.Long.longValue() method import java.lang.*; public class Geek { public static void main(String[] args) { Long lobject = new Long(97387717187); // Very large number will produce compile errors long nl = lobject.longValue(); System.out.println("The Value of nl as long is = " + nl); } } Output: prog.java:9: error: integer number too large: 97387717187 Long lobject = new Long(97387717187); ^ 1 error Reference: https://docs.oracle.com/javase/7/docs/api/java/lang/Long.html#longValue() Comment More infoAdvertise with us Next Article Introduction to Java A ankita_chowrasia Follow Improve Article Tags : Java Java-lang package Java-Functions java-Long Practice Tags : Java Similar Reads Java Tutorial Java is a high-level, object-oriented programming language used to build web apps, mobile applications, and enterprise software systems. 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