Copy - past с положительного кода, и все равно не работает.
package en.javarush.task.jdk13.task04.task0426;
import java.io.BufferedReader;
import java.io.InputStreamReader;
/*
Labels and numbers
*/
public class Solution {
public static void main(String[] args) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String s = reader.readLine();
int a = Integer.parseInt(s);
if (a < 0) {
if ((a % 2) == 0) {
System.out.println("Negative even number");
}
else {
System.out.println("Negative odd number");
}
}
if (a > 0) {
if ((a % 2) == 0) {
System.out.println("Positive even number");
}
else {
System.out.println("Positive odd number");
}
}
else {
System.out.println("Zero");
}
}
}