Program that creates a random string of characters and acts as a password generator

I'm writing this program that asks the user for password length and then creates a random string of characters that length using characters ! to ~. The only part that I am stuck on is that it is creating multiple strings where I only need one. Any input would be appreciated.

import java.util.*;
public class pw
{
public static void main(String[]arg)
{
    Scanner in = new Scanner(System.in);
    Random gen = new Random(); 
    System.out.println("Enter password length:  ");
    int length = in.nextInt();

for(int i=1;  i < length; i++)
{
 int slength = length+gen.nextInt(length - 1);
 StringBuilder s = new StringBuilder(slength);

 while(s.length() <= length)
 {
  s.append((char)(33+gen.nextInt(126)));    
  }
  System.out.println(s.toString());
 }
 }
 }