.length() is a method of a String class and which returns the number of characters in the string.
.length will give the number of elements stored in an array.
public class length
{
public static void main(String args[])
{
String x="test";
int a[]={1,2,3,4};
System.out.println(x.length());
System.out.println(a.length);
}
}
// output
4
4
