length and the length of the [JAVA] java ()

Reference links:

• Have you noticed in length and length Java () yet? A plus size ()

Seek length length java sometimes in parentheses, sometimes without parentheses, in the end when to add parentheses it?

to sum up:

• String class in Java string object defined by length () find its length.
• If the array length requirements, can use their own property length.
• Namely: the array without the string to add
   

Summary of the requirements length:

Array .length	Attributes	Return value int
String .length ()	method	Return value int
Collection .size ()	method	Return value int