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Java String length() Method - GeeksforGeeks

Last Updated : 23 Dec, 2024

String length() method in Java returns the length of the string. In this article, we will see how to find the length of a string using the String length() method.

Example:

class Geeks {
    public static void main(String[] args){

        String s1 = "abcd";
        System.out.println(s1.length());

        String s2 = "";
        System.out.println(s2.length());

        String s3 = "a";
        System.out.println(s3.length());
    }
}

Important Points:

• The length() method returns the number of characters present in the string.
• Suitable for string objects but not for arrays. 
• Can also be used for StringBuilder and StringBuffer classes.
• It is a public member method.
• Any object of the String class, StringBuilder class, and StringBuffer class can access the length() method using the ( . ) dot operator.

public int length()

Return Type: The return type of the length() method is int.

public class Geeks {
    public static void main(String[] args){
      
        // Here str is a string object
        String str = "GeeksforGeeks";

        System.out.println(str.length());
    }
}

The size of the String is 13

// whether the length of two strings is
// equal or not using the length() method
import java.io.*;

class Geeks {
    public static void main(String[] args) {

        String s1 = "abc";
        String s2 = "xyz";

        // storing the length of both the
        // strings in int variables
        int len1 = s1.length();
        int len2 = s2.length();

        // checking whether the length of
        // the strings is equal or not
        if (len1 == len2) {
            System.out.println("The length of both the strings"+ " are equal and is "+ len1);
        }
        else {
            System.out.println("The length of both the strings"+ " are not equal");
        }
    }
}

The length of both the strings are equal and is 3

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