Java.lang.Long.valueOf() method with examples (original) (raw)

Last Updated : 05 Dec, 2018

Java.lang.Long.valueOf() is a built-in method in Java of lang class that returns a Long object holding the value extracted from a specified String S when parsed with the radix that is given in the second argument. The first argument is interpreted as representing a signed long in the radix specified by the second argument, exactly as if the arguments were given to the parseLong(java.lang.String, int) method. It returns a result that is a Long object that represents the long value specified by the string.

Syntax:

public static Long valueOf(String s, int radix) throws NumberFormatException

Parameters: The method accepts two mandatory parameters:

S: This refers to the string which is to be parsed.
radix: This refers to the radix which is to be used in interpreting the string S.

Return type: The built-in method returns a Long object holding the value represented by the string argument in the specified radix.

Errors and Exception:

NumberFormatException: If the number does not contain a parsable long the program returns.

Below programs illustrate the Java.lang.Long.valueOf() method.

Program 1:

import java.lang.Math;

class Gfg1 {

`` public static void main(String args[])

`` {

`` Long l = new Long( 10 );

`` String str = "45325" ;

`` System.out.println( "Long instance Value = "

`` + l.valueOf(str, 10 ));

`` }

}

Output:

Long instance Value = 45325

Program 2: