Why isn't this running and has an error?

Question

import java.util.Scanner;
public class Program{
public static void main(String[] args) {

int x;
System.out.println("Enter a number");
Scanner in = new scanner(System.in);
x = in.nextInt();
while(x>=0){
System.out.println(x); if(x%2==0){
System.out.println("The number is even");

int x;
System.out.println("Enter a number");
Scanner in = new scanner(System.in);
x = in.nextInt();
while(x>=0){
System.out.println(x);
if(x%2==1){
System.out.println("The number is odd");
x--;
}
}
}

Answer 1

You are defining x variable and 'in' object two times, already defined not needed again to define.
Remove 2nd defined Scanner object in, statement. And int x;
You can directly overwrite x , and use in....
and typo Capital S in Scanner.
and end braces are missing...
and x-- ; calculating in if only executed ones when x is odd, then it is infinite loop because it is in while. So change all these. Run it the playground and share the link here.. ok.

Answer 2

import java.util.Scanner;
public class Program{
public static void main(String[] args) {

int x;
System.out.println("Enter a number");
Scanner in = new Scanner(System.in);
x = in.nextInt();
while(x>=0){
System.out.println(x); if(x%2==0){
System.out.println("The number is even");

System.out.println("Enter a number");

x = in.nextInt();
while(x>=0){
System.out.println(x);
if(x%2==1){
System.out.println("The number is odd");}
x--;
}

}}}
}
// is this what you wanted code?