Deleting White Spaces In Java Code

My method below works fine to print a matrix but when it prints every row, it is printing extra 4 white spaces which is not required. How can I delete those extra spaces at the end? when I use

System.out.print((matrix[i][j] + " ").replaceAll("^s+", ""));

It trims every thing including the spaces I needed for my matrix. So where should I put replaceAll("^s+", "") ?

private static void printMatrix(int[][] matrix) {
System.out.println();
System.out.println("Matrix:");
for (int i = 0; i < matrix.length; i++) {
for (int j = 0; j < matrix[i].length; j++) {
System.out.print(matrix[i][j] + " ");
}
System.out.println();
}
}