Question

There is error in this java code. Pls debug.

// Prompt user for value to start
// Value must be between 1 and 20 inclusive
// At command line, count down to blastoff
// With a brief pause between each displayed value
import java.util.*;
public class DebugSix3
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
String userNumString;
int userNum, val;
final int MIN = 1;
final int MAX = 20;
System.out.println("Enter a number between " + MIN + " and " + MAX + " inclusive");
userNumString = input.next();
userNum = Interger.parseInt(userNumString);
while(userNum < MIN || userNum = MAX)
{
System.out.println("Number out of range" +
"\nEnter a number between " + MIN + " and " + MAX + " inclusive");
userNumString = input.next();
userNum = Integer.parse(userNumString);
}
for(val = userNum; val < 0; --val)
{
System.out.print(val + " ");
for(int x = 0; x < 100000; ++x)
for(int y = 0; y < 10000; ++y);
// Adjust these numbers for faster or slower performance
}
System.out.println("Blastoff!");
}
}

Answer 1

// Prompt user for value to start
// Value must be between 1 and 20 inclusive
// At command line, count down to blastoff
// With a brief pause between each displayed value
import java.util.*;
public class DebugSix3
{
  public static void main(String[] args)
  {
    Scanner input = new Scanner(System.in);
    String userNumString;
    int userNum, val;
    final int MIN = 1;
    final int MAX = 20;
    System.out.println("Enter a number between " + MIN + " and " + MAX + " inclusive");
    userNumString = input.next();
    userNum = Integer.parseInt(userNumString);
    while(userNum < MIN || userNum > MAX)
    {
      System.out.println("Number out of range" +
        "\nEnter a number between " + MIN + " and " + MAX + " inclusive");
      userNumString = input.next();
      userNum = Integer.parseInt(userNumString);
    }
    for(val = userNum; val >= 0; --val)
    {
      System.out.print(val + " ");
      for(int x = 0; x < 100000; ++x)
        for(int y = 0; y < 10000; ++y);
// Adjust these numbers for faster or slower performance
    }
    System.out.println("Blastoff!");
  }
}