BeginnersBook

  • Home
  • Java
    • Java OOPs
    • Java Collections
    • Java Examples
  • C
    • C Examples
  • C++
    • C++ Examples
  • DBMS
  • Computer Network
  • Python
    • Python Examples
  • More…
    • jQuery
    • Kotlin
    • WordPress
    • SEO
    • JSON
    • JSP
    • JSTL
    • Servlet
    • MongoDB
    • XML
    • Perl

Java StringBuilder length()

Last Updated: October 4, 2022 by Chaitanya Singh | Filed Under: java

Java StringBuilder length() method returns the length of the string. The StringBuilder instance represents a character sequence, the length() method returns the total number of characters present in this sequence.

The syntax of length() method is:

//returns the length of the character sequence
//represented by StringBuilder instance sb
sb.length()

length() Description

public int length(): Returns the total count of characters in character sequence represented by sb. Here, sb is an object of StringBuilder class.

length() Parameters

  • It does not take any parameter.

length() Return Value

  • Returns the length of String.

Example 1 of StringBuilder length() method

public class JavaExample {
  public static void main(String[] args) {
    StringBuilder sb = new StringBuilder("Text");
    System.out.println("Length of string 'text': "+sb.length());

    //string with space, the whitespace is included in the count
    StringBuilder sb2 = new StringBuilder("Sample Text");
    System.out.println("Length of string 'Sample Text': "+sb2.length());
  }
}

Output:

Java StringBuilder length() example output_1

Example 2: Print length of user entered string

import java.util.Scanner;
public class JavaExample {
  public static void main(String[] args) {
    StringBuilder sb = new StringBuilder();

    //take user input
    System.out.print("Enter a string: ");
    Scanner scan = new Scanner(System.in);
    String str = scan.nextLine();

    //append user input into sb
    sb.append(str);

    //print length
    System.out.println("Length of entered string: "+sb.length());
  }
}

Output:

Java StringBuilder length() example output_2

Recommended Posts

  • Java StringBuilder insert()
  • Java StringBuilder delete()
  • Java StringBuilder trimToSize()
  • Java StringBuilder lastIndexOf()

Top Related Articles:

  1. how to copy one hashmap content to another hashmap
  2. Java StringBuilder delete()
  3. Java StringBuffer class With Examples
  4. When to use ArrayList and LinkedList in Java
  5. Java StringBuilder append() Method

Tags: Java-StringBuilder

About the Author

I have 15 years of experience in the IT industry, working with renowned multinational corporations. Additionally, I have dedicated over a decade to teaching, allowing me to refine my skills in delivering information in a simple and easily understandable manner.

– Chaitanya

Java Tutorial

Java Introduction

  • Java Index
  • Java Introduction
  • History of Java
  • Features of Java
  • C++ vs Java
  • JDK vs JRE vs JVM
  • JVM - Java Virtual Machine
  • First Java Program
  • Variables
  • Data Types
  • Operators

Java Flow Control

  • Java If-else
  • Java Switch-Case
  • Java For loop
  • Java while loop
  • Java do-while loop
  • Continue statement
  • break statement

Java Arrays

  • Java Arrays

OOPs Concepts

  • OOPs Concepts
  • Constructor
  • Java String
  • Static keyword
  • Inheritance
  • Types of inheritance
  • Aggregation
  • Association
  • Super Keyword
  • Method overloading
  • Method overriding
  • Overloading vs Overriding
  • Polymorphism
  • Types of polymorphism
  • Static and dynamic binding
  • Abstract class and methods
  • Interface
  • Abstract class vs interface
  • Encapsulation
  • Packages
  • Access modifiers
  • Garbage Collection
  • Inner classes
  • Static import
  • Static constructor

Java Exception Handling

  • Exception handling
  • Java try-catch
  • Java throw
  • Java throws
  • Checked and Unchecked Exceptions
  • Jav try catch finally
  • Exception Examples
  • Exception Propagation

Collections Framework

  • Collections in Java
  • Java ArrayList
  • Java LinkedList
  • Java Vector
  • Java HashSet
  • Java LinkedHashSet
  • Java TreeSet
  • Java HashMap
  • Java TreeMap
  • Java LinkedHashMap
  • Java Queue
  • Java PriorityQueue
  • Java Deque
  • Comparable interface
  • Comparator interface
  • Collections Interview Questions

MORE ...

  • Java Scanner Class
  • Java 8 Features
  • Java 9 Features
  • Java Conversion
  • Java Date
  • Java Multithreading
  • Java I/O
  • Java Serialization
  • Java Regex
  • Java AWT
  • Java Swing
  • Java Enum
  • Java Annotations
  • Java main method
  • Java Interview Q

Copyright © 2012 – 2025 BeginnersBook . Privacy Policy . Sitemap