I need help with this problem using JAVA

There is a two-dimensional n by m grid space. This grid is (0,0) lower left and (n, below. m) upper right as shown (4,6) (0,0) There is an ant on the coordinates (i, j) in this space. (i-1 and j-4 in the example). The ant begins to move at a constant speed in the right upper 45 direction. The ant that first started from (i, j) moves to (i+ 1, j + 1) after one hour. However, if hit the interface, it will move to the other direction at the same speed. Make a program that calculates the position of ant after H hours. Input & Output Format T = number of test case NMJH Output XY