public final float getSum(int x, int y) {
public final int getSum(int x, int y) {
	public final float getSum(int x, int y) {		if ((x < 0) || (x >= width)) {			throw new IllegalArgumentException("x");		}		if ((y < 0) || (y >= height)) {			throw new IllegalArgumentException("y");		}		return table[y * width + x];	}