Не компилируется

Всем привет. Помогите понять почему не компилируется. Код ниже:

package com.javarush.task.task03.task0307;

/*
Привет Starcraft!
*/

public class Solution {
    public static void main(String[] args) {
        Zerg zergling1 = new Zerg();
        zergling1.name = ling1;
        Zerg zergling2 = new Zerg();
        zergling2.name = ling2;
        Zerg zergling3 = new Zerg();
        zergling3.name = ling3;
        Zerg zergling4 = new Zerg();
        zergling41.name = ling4;
        Zerg zergling5 = new Zerg();
        zergling5.name = ling5;
        Protoss kreiser1 = new Protoss();
        kreiser1.name = eiser1;
        Protoss kreiser2 = new Protoss();
        kreiser2.name = eiser2;
        Protoss kreiser3 = new Protoss();
        kreiser3.name = eiser3;
        Terran spacemarin1 = new Terran();
        spacemarin1.name = marin1;
        Terran spacemarin2 = new Terran();
        spacemarin2.name = marin2;
        Terran spacemarin3 = new Terran();
        spacemarin3.name = marin3;
        Terran spacemarin4 = new Terran();
        spacemarin4.name = marin4;


    }

    public static class Zerg {
        public String name;
    }

    public static class Protoss {
        public String name;
    }

    public static class Terran {
        public String name;
    }
}