Thread: Aligning Issues in the Output

Hi.

I'm having trouble aligning my information. The output leaves the columns below each other and not next to each other. Here's my code (sorry, not sure how to put code tags around it):

import java.util.Scanner;
import java.io.File;
import java.io.IOException;
public class Hurricanes2
{
    public static void main(String[] args) throws IOException
    {
        Scanner inFile = new Scanner(new File("hurcdata2.txt"));
        int numLines = 0;
        int knots = 0;
 
        while(inFile.hasNextLine()) 
        { 
            inFile.nextLine(); 
            numLines++; 
        } 
        inFile.close(); 
        inFile = new Scanner(new File("hurcdata2.txt")); 
 
        int [] years = new int [numLines]; 
        String [] name = new String [numLines];
        int [] category = new int [numLines];
        int [] pressure = new int [numLines];
        double [] wind = new double [numLines];
        String [] month = new String [numLines];
 
        System.out.printf("%45s\n", "Hurricanes 1980 - 2006");
        System.out.println();
        System.out.println("Year     Hurricane     Catergory     Pressure (mb)     Wind Speed (mph)");
        System.out.println("=======================================================================");
 
        int i=0; 
        while(inFile.hasNext()) 
        { 
            years[i] = inFile.nextInt(); 
            month[i] = inFile.next(); 
            pressure[i] = inFile.nextInt(); 
            wind[i] = inFile.nextDouble(); 
            name[i] = inFile.next(); 
            i++; 
        } 
        inFile.close(); 
 
 
        for(int y: years)
        {
            System.out.println(y);
        }
 
        for(String n: name)
        {
            System.out.printf("%18s\n", n);
        }
 
        for(double w: wind)
        {
            System.out.printf("%25.0f\n", w);
        }
 
        for(int p: pressure)
        {
            System.out.printf("%18d\n", p);
        }
 
    }
}

First, many of your print commands also issue new lines ('\n' - System.out.println will also do the same automatically but System.out.print just prints the contents), which will result in a single column output. So first you should remove those until you actually need a new line. Second, if you wish the columns to line up perfectly you may need to write some code which determines the correct spacing between each columns, outputs the value and the correct number of spaces between each output. For example, if each column has 10 spaces and you wish to print out the value '18.0', you could

//right aligns the output text to 10 spaces
String st = "18.0":
for ( int i = st.length(); i < 10; i++ ){
    System.out.print(" ");
}
System.out.print(st);

I tried both methods, but this is what ends up happening:



The year column is displayed on one side and the hurricane name column is displayed below the year column. The spacing between them is correct, but I'm not sure how to get the columns next to each other.