3.

import java.util.*;
import java.io.*;
public class negativeSum
{
    public static void main(String [] args)
    throws FileNotFoundException
    {
        Scanner Kyogre = new Scanner(new File("negativeSum.txt"));
        int x = 0;
        int count = 0;
        if(Kyogre.nextInt() < 0)
        {
                System.out.println("THE FIRST NUMBER IS A NEGATIVE NUMBER");
        }
        while(Kyogre.hasNextInt() && x >= 0)
        {
              x = x + Kyogre.nextInt();
              count++;
        }
        System.out.println("Sum of" + x + "after" + count + "steps");
    }
}
5.
import java.util.*;
import java.io.*;
public class collapseSpaces
{
   public static void main(String [] args)
    throws FileNotFoundException
   {
       Scanner Moltres = new Scanner(new File("collapseSpaces.txt");
       while(Moltres.hasNext())
       {
           String Entei = Moltres.Next();
           System.out.print(Entei + " ");
       }
   }
}
7.
import java.util.*;
import java.io.*;
public class flipLines
{
   public static void main(String [] args)
    throws FileNotFoundException
   {
       Scanner pikachu = new Scanner(new File("flipLines.txt");
       PrintStream out = new PrintStream(new File("Charmander.txt")
       while(pikachu.hasNextLine)
       {
           String line1 = pikachu.nextLine;
           String line 2 = pkachu.nextLine;
           out.println(line2);
           out.println(line1);
       }
   }
}
9.
import java.io.*;
import java.util.*;
public class WordWrap
{
   public static void main(String [] args)
   {
       Scanner pikachu = new Scanner(new File("bob.txt");
       int x = pikachu.length
       int z = 60
       while(pikachu.hasNext())
       {
           output.print(pikachu.Next());
           y++;
           if(y > z)
           {
               output.println("");
               z * 2
           }
       }
   }
}
11.
import java.io.*;
import java.util.*;
public class WordWrap
{
   public static void main(String [] args)
   {
       Scanner pikachu = new Scanner(new File("bob.txt");
       int x = pikachu.length
       int z = 60
       while(pikachu.hasNext())
       {
           output.print(pikachu.Next());
           y++;
           if(y > z)
           {
               output.println("");
               z * 2
           }
       }
   }
}
13.