In Java length length of size of explain the differences
- 2020-05-17 05:33:52
- OfStack
length,length(),size()
length property: used to get the array length.
eg:
int ar[] = new int{1,2,3}
/**
* Array with length Property gets the length
*/
int lenAr = ar.length;// here lenAr=3
System.out.println("Arr length:"+lenAr);
length() method: used to get the length of a string.
String str = "Hello World Java";
/**
* String to use length() Method to get the length
*/
int lenStr = str.length();// here lenStr=16
System.out.println("Str length():"+lenStr);
size() method: used to get how many elements there are in a generic collection.
eg:
/**
* Collection Is the largest single-value saved parent interface in the entire class set, so you need to instantiate it with a concrete subclass
*/
Collection<String> col = new ArrayList<String>();
col.add("Hello");
col.add("World");
col.add("Java");
/**
* Class set framework size() Method takes the number of elements
*/
int sizeCol = col.size();// here sizeCol=3
System.out.println("Col size:"+sizeCol);
Thank you for reading, I hope to help you, thank you for your support of this site!