c
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int length():

It is used to find out the length of the string
Difference between langth() method and langth variable:-
length()----?method
length--?variable
length is available in array to find the length of the array
Ex:-
int [] a={10,20,30};
System.out.println(a.length);//3
length() is method used to find the length of the given string.
Ex:-
String str="venkat";
System.out.println(str.length());//6
Signature
The signature of the string length() method is given below:
public int length()

String Length program

class Test
{
public static void main(String[] args)
{
String str="venkat";
System.out.println(str.length());
System.out.println("freetimestudy".length());
int[] a={10,20,30};
System.out.println(a.length);
}
}

intput and output

output:6,,13,,3