Question

Q1: Use the setCharAt() method in StringBuilder class to edit a String "java". After editing it, the String will be "Java".

Q2: Write a Java program to define the ListNode in the LinkedList:

Answer 1

Ans

code:-

import java.util.*;

class MyClass {

public static void main(String[ ] args) {

StringBuilder s=new StringBuilder("java");

s.setCharAt(0,'J');//at index 0 replace

System.out.println(s);//print

}

}

Node head;

class Node{

int data;//data

Node link;//link to next

Node(int d){//initialise

data = d;

}

}

If any doubt ask in the comments.