Prog122a.java

/**
* Prog 122a Square vs Squared
* Bianca Smart
* 10/5/16
* BlueJ
* This program outputs numbers 1-40, their squares, and square roots formatted into a table
* Learned - How to use the method decimalFormat
* Difficulties - N/a
*
**/
import java.text.DecimalFormat;
public class SquarevsSquared
{
    private static final String zeroes = "0000000000000000";
    public static void main(String[] args)
    {
         
        System.out.println("Number  Square  Square Root"); //Prints header
        int square = 0; //Declares variables
        double sqrt = 0;
        double roundSqrt = 0;
        DecimalFormat df = new DecimalFormat("0.0000"); //Creates decimal format object
        for(int x = 1; x <=40; x++) //Loops 40 times
        { 
            square = x*x;
            sqrt = Math.sqrt(x); //Find square root
            roundSqrt = (int)(sqrt*10000+.5)/10000.0; //Rounds to 4 decimal places
            System.out.print(x);
            if(x<10)
            {
                System.out.print(" ");
            }
            System.out.print("       "+square+"      ");
            if(square<10) //Adds spaces to format properly
            {
                System.out.print("   ");
            }
            else if(square<100)
            {
                System.out.print("  ");
            }
            else if(square<1000)
            {
                System.out.print(" ");
            } 
            System.out.print(df.format(roundSqrt)); //Formats square root number
            System.out.print("\n"); //New line
        }
    }   
                                                           
        
}
/*
 * Output:
 * Number  Square  Square Root
1        1         1.0000
2        4         1.4142
3        9         1.7321
4        16        2.0000
5        25        2.2361
6        36        2.4495
7        49        2.6458
8        64        2.8284
9        81        3.0000
10       100       3.1623
11       121       3.3166
12       144       3.4641
13       169       3.6056
14       196       3.7417
15       225       3.8730
16       256       4.0000
17       289       4.1231
18       324       4.2426
19       361       4.3589
20       400       4.4721
21       441       4.5826
22       484       4.6904
23       529       4.7958
24       576       4.8990
25       625       5.0000
26       676       5.0990
27       729       5.1962
28       784       5.2915
29       841       5.3852
30       900       5.4772
31       961       5.5678
32       1024      5.6569
33       1089      5.7446
34       1156      5.8310
35       1225      5.9161
36       1296      6.0000
37       1369      6.0828
38       1444      6.1644
39       1521      6.2450
40       1600      6.3246

 */