Java StringBuilder length() method

Last Updated : 17 Mar 2025

The length() method of Java StringBuilder class returns the length (total characters) of this sequence.

Syntax:

Parameter:

Returns:

The length() method returns the total character count of this sequence.

Exception:

Compatibility Version:

Java 1.5 and above

Example 1

public class StringBuilderLengthExample1 {
	public static void main(String[] args) {
		StringBuilder sb1= new StringBuilder("javatpoint");
		
		// return the length of string
		int length1 = sb1.length();
		System.out.println("total character count of \"javatpoint\"= " + length1);
		
		StringBuilder sb2 = new StringBuilder("string l e ng th");
		// return the length of string
		int length2 = sb2.length();
		System.out.println("total character count of \"string l e ng th\"= " + length2);
		
		sb2 = new StringBuilder("");
		//return the length of empty string
		System.out.println("total character count = " + sb2.length());
	}
}

Output:

total character count of "javatpoint"= 10
total character count of "string l e ng th"= 16
total character count = 0

Example 2

In this example, we are calculating the length of the string by taking input from a user.

public class StringBuilderLengthExample2 {
	public static void main(String[] args) {
		StringBuilder sb = new StringBuilder("");
		 System.out.print("enter your string value: ");
		 Scanner sc = new Scanner(System.in);
		 sb.append(sc.nextLine());
		 //returning total input character
		 System.out.println("total input character : "+sb.length());
		 sc.close();
	}
}

Output:

enter your string value: hello this is a string
total input character : 22

Next TopicJava threadlocal remove method

← prev next →

We deliver comprehensive tutorials, interview question-answers, MCQs, study materials on leading programming languages and web technologies like Data Science, MEAN/MERN full stack development, Python, Java, C++, C, HTML, React, Angular, PHP and much more to support your learning and career growth.

Contact info

G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India

hr@tpointtech.com

+91-9599086977

Interview Questions

Python Java Data Structure C++ C HTML JavaScript jQuery SQL Power BI

Online Compilers

C Compiler R Compiler C++ Compiler PHP Compiler Java Compiler HTML Editor Swift Compiler Python Compiler JavaScript Editor TypeScript Editor

Latest Post | Tutorials List | Privacy Policy | About Us | Contact Us

Java StringBuilder length() method

Syntax:

Parameter:

Returns:

Exception:

Compatibility Version:

Example 1

Example 2

Contact info

Follow us

Top Tutorials

Interview Questions

Online Compilers

Java EnumMap

Java DriverManager

Java ThreadLocal