Java StringBuffer length() method

The length() method of Java StringBuffer 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 1.0 and above

Example 1

public class StringBufferLengthExample1 {
	public static void main(String[] args) {
		StringBuffer sb1= new StringBuffer("javatpoint");
		
		// return the length of string
		int length1 = sb1.length();
		System.out.println("total character count of \"javatpoint\": " + length1);
		
		StringBuffer sb2 = new StringBuffer("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 StringBuffer("");
		//return the length of empty string
		System.out.println("total character count: " + sb2.length());
	}
}

Test it Now

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.

import java.util.Scanner;

public class StringBufferLengthExample2 {
	public static void main(String[] args) {
		StringBuffer sb = new StringBuffer("");
		 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();
	}
}

Test it Now

Output:

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

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