public class MyClass {
      private static void func1() { // со статик
        ...
      }
   }

public class MyClass {
      private void func1() { // без статик
        ...
      }
   }

private static int hugeCapacity(int minCapacity) {
    if (minCapacity < 0) // overflow
        throw new OutOfMemoryError();
    return (minCapacity > MAX_ARRAY_SIZE) ?
        Integer.MAX_VALUE :
        MAX_ARRAY_SIZE;
}

public class Car {

    private static double convertToMiles(double km){
        return km*0.621371192;
    }
}

class Knight : Warrior {
    private Weapon createMainWeapon() {
        return new Sword();
    }
    private Dagger getDagger() {
        return null;
    }
}

class Knight : Warrior {
    static int numberOfKnights;
    public Knight() {
        numberOfKnights++;
    }
    public static int getNumber() {
        return numberOfKnights;
    }
}

class Squire {
    Knight master;
    public prepareForBattle() {
       ...
    }
}