Difference between the Length attribute and the length () method and the size () method in Java

1. The Length attribute in Java is for arrays. For example, if you declare an array and want to know the length of the array, the Length attribute is used.

1. The Length attribute in Java is for arrays. For example, if you declare an array and want to know the length of the array, the Length attribute is used.

2 The length () method in Java is for string. If you want to see the length of this string, use the length () method.

3. The size () method in Java is for generic sets. If you want to see how many elements this generic type has, call this method to view it!

This example demonstrates the usage of these two methods and an attribute.

Public static void main (string [] ARGs ){
String [] list = {"Ma", "Cao", "Yuan "};
String A = "macaoyuan ";
System. Out. println (list. Length );
System. Out. println (A. Length ());

List <Object> array = new arraylist ();
Array. Add ();
System. Out. println (array. Size ());
}

The output value is:

3

9

1