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To calculate sum of the following series:
Program 2 s=1 + 4 + 9 + 16 + ..... + n terms
Create a class series, which will contain the following members:
Data Members
int n : To store the nth term.
Member Methods
series() : Constructor to initialize n.
void input() : Input a number n for the series(1+...+n).
int compute( ) : To calculate the sum of the series and store it in s.
void display( ) : Calls the method compute() and prints the sum.
1 import java.util.*;
2 class series
3 {
4 int n;
5 series()
6 {
7 n=0;
8 }
9 void input()
10 {
11 Scanner sc=new Scanner(System.in);
12 System.out.println("Enter nth term");
13 n=sc.nextInt();
14 }
15 int compute()
16 {
17 int i,s=0;
18 for(i=1;i<=n;i++)
19 {
20 s=s+(i*i);
21 }
22 return s;
23 }
24 void display()
25 {
26 int sum=compute();
27 System.out.println("The result is : "+sum);
308308 Touchpad Computer Applications-X

