The strtoll function returns the long long representation of a string. If base is zero, the number is assumed to be decimal unless the converted number starts with O (for Octal), Ox (for hex) or OX (for hex). If base is between 2 and 36, it is used as the radix of the number. base It is the base of the number being converted. The strtoll function will modify endptr (if endptr is not a null pointer) so that endptr points to the first character that was not converted. endptr It is used by the strtoll function to indicate where the conversion stopped. The syntax for the strtoll function in the C Language is: long long strtoll(const char *nptr, char **endptr, int base) Parameters or Arguments nptr A pointer to a string to convert to a long integer. The strtoll function skips all white-space characters at the beginning of the string, converts the subsequent characters as part of the number, and then stops when it encounters the first character that isn't a number. the C Programming Language, the strtoll function converts a string to a long long. Although, this approach is deprecated from Java version 9, it can be used in the older versions.Įxample : In this example, we will use the constructor to initialize the object with value and toString() method to convert it to string. In this approach, we are using constructor of Long class to initialize with long value and then use toString() method to convert Long object to the string.
The append() method is used to append the string representation of the long argument to this sequence. In this approach, we are using append method of StringBuffer class.
#Convert string to long how to
The append() method is used to append the string representation of the long argument to this sequence.Įxample : In this example, we will use the append() method to add long value and toString() method to convert it to string.ĪLSO READ: How to get sublist from a list in Java Method-7: Using StringBuffer class
In this approach, we are using append method of StringBuilder class. In this approach, we are using format method of a String class to convert long to string.Įxample : In this example, we will use the access specifier " %d" as the value to format is a long type. The value of String variable s2 is 1598753ĪLSO READ: IndexOf() Java Method Explained Method-5: Using String.format() The value of String variable s1 is 1,598,753 ("The value of String variable s2 is " + s2)
("The value of String variable s1 is " + s1) So, by default it will take comma as a separator. Here, for one of the string we are not giving any specific format. Moreover, when we do not specify the format it takes the grouping separator comma(,) to separate the long numbers.Įxample :In this example, we are using format method of DecimalFormat class for conversion. In this approach, we are using the DecimalFormat class to convert long to String. Output The value of long variable is 1598521
#Convert string to long code
Each of the Number subclasses includes a class method, toString(), that will convert its primitive type to a string.ĪLSO READ: How to set up Java with Visual Studio Code Įxample :In this example, we are using toString method of Long class for conversion. In this approach, we are using Long wrapper class to convert long value to a string. Output The value of long variable is 1587421 In this approach, we are using valueof method of String class that converts long values passed as a parameter into a string.Įxample : In this example, long variable l is converted to string using valueOf method. Output The value of long variable is 8584157 ("The value of String variable is " + s) Program to convert long to string in Java Here, we are using a concatenation operator + to store the long value as a string.ĪLSO READ: How to find a height of a tree data structure in JavaĮxample : In this example, we concatenate blank string "" with long variable l. This is the simplest approach for converting long to a string. The list below shows eight different ways in which we can convert long to string. There are several ways to convert long type data to a string. In many GUI based application also, if we have to display long value in text field we may need to convert it before displaying. In several applications, we may need to convert a long number to a string because we need to operate on the value in its string form. As we know that java supports auto-boxing, so we can use long and Long interchangeably in most of the cases. In java, long is a primitive data type whereas Long is a wrapper class.
References Different methods to convert long to String in Java.Different methods to convert long to String in Java.
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