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Java StringBuilder length() method with example

StringBuilder Class length() method: Here, we are going to learn about the length() method of StringBuilder Class with its syntax and example.
Submitted by Preeti Jain, on December 22, 2019

StringBuilder Class length() method

• length() method is available in java.lang package.
• length() method is used to return the length of this sequence (i.e. it counts the number of characters denoted by this object).
• length() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• length() method does not throw an exception at the time of returning length.

Syntax:

    public int length();

Parameter(s):

• It does not accept any parameter.

Return value:

The return type of this method is int, it returns the counts of the number of characters stored in this object.

Example:

// Java program to demonstrate the example 
// of int length() method of StringBuilder 
public class Length {
    public static void main(String[] args) {
        // Creating an StringBuilder object
        StringBuilder st_b = new StringBuilder("Java World ");

        // Display st_b 
        System.out.println("st_b = " + st_b);

        // By using length() method is to return the length
        // of st_b object
        int len = st_b.length();

        // Display st_b length
        System.out.println("st_b.length() = " + len);
    }
}

Output

st_b = Java World 
st_b.length() = 11