1. The equivalent of x** in Java
- The equivalent of `x**` in Java is `Math.pow(x, y)`, where `y` is the power to which you want to raise `x`.
2. The equivalent of x// in Java
- The equivalent of `x//` in Java is `/` when used with integers, but it's important to note that if one of the operands is a floating-point number, the division will be performed in floating-point numbers, not integers.

3. Example of x** x// in Java
Here are some examples:
double x = Math.pow(2, 3); // equivalent of 2**3
int y = 5 / 2; // equivalent of 5//2