How can it be wrong

package com.codegym.task.task03.task0307;

/*
Hello, Starcraft!

*/

public class Solution {
    public static void main(String[] args) {

        //write your code here........

        Zerg zerg= new Zerg("soki");
         Zerg zerg= new Zerg("noki");
          Zerg zerg= new Zerg("doki");
           Zerg zerg= new Zerg("poki");
           Protoss protoss=new Protoss("roki");
           Protoss protoss=new Protoss("niki");
           Protoss protoss=new Protoss("loki");
           Terran terran=new Terran("ikki");
           Terran terran=new Terran("kiki");
           Terran terran=new Terran("ciki");
           Terran terran=new Terran("niki");
           }

    public static class Zerg {
        public String name;

    }

    public static class Protoss {
        public String name;
    }

    public static class Terran {
        public String name;
    }
}