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String Length In Java

Last Updated : Jul 1, 2023

String Length In Java

In this article we will show you the solution of string length in java, a char array supports strings on an internal level when used as objects in Java.

Strings are a special kind of array that holds characters; as a result, strings are immutable just like arrays, which are inflexible.

Step By Step Guide On String Length In Java :-

The total character count of a string is used to measure its length. By using the string length method, you can find out how many characters you typed into the String.

The length of any string returned by this method is equal to how many 16-bit Unicode characters are present in the string.

What do you mean by a string's length or diameter?

A string's length or size is determined by how many letters are present in it.As an illustration, the string "Talkerscode" contains 11 characters.

Method string.length()

For string objects, there is a function called length() in the Java languageA string's length is returned by the length() method.

If you want to know the length of a string object, but not an array, you should use the length() function.

There is a length() method available in both the StringBuilder and StringBuffer classes.

There is a public member method called length(). Utilizing the. (dot) operator, any object belonging to the String, StringBuilder, or StringBuffer classes can access the length() method.

The built-in length() function of the Java string class can be used to determine a string's length.

The length() method is a public member function of the string class in Java, which is used to produce objects called strings.

As a result, the. (dot) operator can be used to access this method from any variable of type string. The length() method determines how many characters are there in the entire String.

Signature

The following is the string length() method's signature:

public int length()

Returns:

character length is returned. To put it another way, the string's overall character count.

Internal implementation

A char[] array is used internally by the String class to store the characters.

The array's length variable is used to determine the array's overall element count.

Due to internal use of this char[] array by the Java String class, the length variable cannot be released publicly.

As a result, the length() method, which exposes the value of the length variable, was developed by Java programmers.

The length() function can alternatively be considered the getter() method because it gives the user the value of the class field.

The internal implementation demonstrates how the length() method returns the length variable's value.

public class LengthEx{
public static void main(String args[]){
String a1="Talkerscode";
String a2="java";
System.out.println("length of string a1 is: "+a1.length());
System.out.println("length of string a2 is: " +a2.length());
}}
  1. The public class LengthExample is created in the first line of code.
  2. Next, public static void main is used (String args[])
  3. After that, the first string, a1, is created.
  4. Next, the second string is created as a2.
  5. Next, we use the length() function to print both strings using the system.out.println command.

Conclusion :-

Thus, we were able to understand the concept of string length in Java as well as how to get a string's length in Java.

We had two Strings, and we used Java's length() function to determine their length.

I hope this article on string length in java helps you and the steps and method mentioned above are easy to follow and implement.