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() methodimport 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() methodimport 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()
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