为什么递归循环中的局部变量会被覆盖？For Java循环中的递归循环

public class RecursionExample {
    public static void main(String[] args) {
        recursiveMethod(3);
    }

    public static void recursiveMethod(int n) {
        int x = n;
        if (n > 0) {
            System.out.println("Current x: " + x);
            recursiveMethod(n - 1);
        }
    }
}

public static void recursiveMethod(int n) {
    if (n > 0) {
        int x = n;
        System.out.println("Current x: " + x);
        recursiveMethod(n - 1);
    }
}

public class RecursionExample {
    private static int x;

    public static void main(String[] args) {
        recursiveMethod(3);
    }

    public static void recursiveMethod(int n) {
        x = n;
        if (n > 0) {
            System.out.println("Current x: " + x);
            recursiveMethod(n - 1);
        }
    }
}

public class RecursionExample {
    public static void main(String[] args) {
        int[] values = new int[3];
        recursiveMethod(3, values, 0);
    }

    public static void recursiveMethod(int n, int[] values, int index) {
        if (n > 0) {
            values[index] = n;
            System.out.println("Current value: " + values[index]);
            recursiveMethod(n - 1, values, index + 1);
        }
    }
}