what the method word.substring do?

Question

String del = word.substring(67);
System.out.println();

Answer 1

Substring method are used for extract some part from string

For example

String a = "sololearn"
String b = a.substring(1)
S.o.p(b) // ololearn

String will be extracted from index 1

Answer 2

https://www.tutorialspoint.com/Java-String-substring-Method-example

this might help