función len en el ejemplo de código java

Ejemplo 1: verificación de java para la longitud de la cadena

String data = "Hello, World!";
int nameLength = data.length(); // 13

Ejemplo 2: longitud de la cadena java

public class Sample_String {
    public static void main(String[] args) {
        //declare the String as an object S1 S2
        String S1 = "Hello Java String Method";
        String S2 = "RockStar";

        //length() method of String returns the length of a String S1.
        int length = S1.length();
        System.out.println("Length of a String is: " + length);
        //8 Length of a String RockStar
        System.out.println("Length of a String is: " + S2.length());
    }
}

Ejemplo 3: longitud de cadena en java

String data = "Hello, World!";
int nameLength = data.length();

Ejemplo 4: método length y length () en java

length() : In String class we have length() method which is used 
to return the number of characters in string.
Ex : String str = “Hello World”;
System.out.println(str.length());
Str.length() will return 11 characters including space. 
  
length : we have length instance variable in arrays which will 
return the number of values or objects in array.
For example :
String days[]={” Sun”,”Mon”,”wed”,”thu”,”fri”,”sat”};
Will return 6 since the number of values in days array is 6

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