Nikos Maravitsas

About Nikos Maravitsas

Nikos has graduated from the Department of Informatics and Telecommunications of The National and Kapodistrian University of Athens. Currently, his main interests are system’s security, parallel systems, artificial intelligence, operating systems, system programming, telecommunications, web applications, human – machine interaction and mobile development.

Java String length Example

In this example we are going to see how you can find out the length of the a String in Java. By length we mean that number of Unicode characters or Code Units.

String class has a very convenient method of doing so: length().

Here is how you can use it :
 
 
 
 
 

StringFromatExample.java:

package com.javacodegeeks.core.string;

public class StringFromatExample {

	public static void main(String[] args) {

		String s1 = "Java Code Geeks are awesome!";

		int strLength  = s1.length();

		System.out.println("The lengt of the string : "+strLength);
		System.out.println("The lengt of the string : ".length());

	}
}

This will output:

The lengt of the string : 28
26

Take care when using length with words of languages that have multi-character letters length will count the number of characters of the String, not lexicographical length.

There is also another way to count the number of characters in a String, but “unpaired surrogates within the text range count as one code point”:
StringFromatExample.java:

package com.javacodegeeks.core.string;

public class StringFromatExample {

	public static void main(String[] args) {
		
		String s1 = "Java Code Geeks are awesome!";
		
		System.out.println(s1.codePointCount(0, s1.length()));
		
	}
}

This will output:

28

 

This was a Java String length Example.

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