Operators and Assignments - General Questions

Which operator has the lowest precedence?

What is the output of the following program?

public class Main {
    public static void main(String[] args) {
        boolean a = false;
        if (a = true) System.out.println("yes");
        else System.out.println("no");
    }
}

What is the output of the following program?

public class Main {
    public static void main(String[] args) {
        int x = 6;
        System.out.println((x & 3) + " " + (x | 3) + " " + (x ^ 3));
    }
}

What is the output of the following program?

public class Main {
    public static void main(String[] args) {
        byte b = 127;
        b++;
        System.out.println(b);
    }
}

What is the output of the following program?

public class Main {
    public static void main(String[] args) {
        System.out.println((-16 >> 2) + " " + (-16 >>> 28));
    }
}