Finding the Length of a String in Java

Exploring the code snippet and its functionality

In Java, determining the length of a string is a common operation for various programming tasks. Knowing the length of a string allows us to perform operations such as validation, manipulation, or processing of textual data.

The length() Method

To find the length of a string in Java, the length() method is used. It is a built-in method available in the String class. The syntax for using the length() method is stringVariable.length(), where stringVariable is the variable storing the string.

Functionality of length()

The length() method returns an integer value representing the number of characters in the string. It counts every character, including spaces, special characters, and punctuation marks. The length is determined based on the Unicode values of the characters.

Usage and Examples

To obtain the length of a string, simply call the length() method on the string variable. For example,

String str = "Hello"; 
int length = str.length();

Here , The length will store the length of the string “Hello” in the variable length, which will be 5.

Differences with Other Options

Among the provided options, option A, length(), is the correct code snippet for finding the length of a string in Java. Options B, C, and D, namely count(), size(), and sizeOf(), are not valid methods for determining string length in Java.

Which code snippet is used to find the length of a string in Java?