顺时针打印矩阵JAVA

好的，我可以回答您的问题。顺时针打印矩阵的JAVA代码如下：

public class PrintMatrixInCircle {
    public static void printMatrixInCircle(int[][] matrix) {
        if (matrix == null) {
            return;
        }
        int rows = matrix.length;
        int cols = matrix[0].length;
        int start = 0;
        while (cols > start * 2 && rows > start * 2) {
            printMatrixInCircleCore(matrix, rows, cols, start);
            start++;
        }
    }

    public static void printMatrixInCircleCore(int[][] matrix, int rows, int cols, int start) {
        int endX = cols - 1 - start;
        int endY = rows - 1 - start;
        // 从左到右打印一行
        for (int i = start; i <= endX; i++) {
            System.out.print(matrix[start][i] + " ");
        }
        // 从上到下打印一列
        if (start < endY) {
            for (int i = start + 1; i <= endY; i++) {
                System.out.print(matrix[i][endX] + " ");
            }
        }
        // 从右到左打印一行
        if (start < endY && start < endX) {
            for (int i = endX - 1; i >= start; i--) {
                System.out.print(matrix[endY][i] + " ");
            }
        }
        // 从下到上打印一列
        if (start < endY - 1 && start < endX) {
            for (int i = endY - 1; i > start; i--) {
                System.out.print(matrix[i][start] + " ");
            }
        }
    }

    public static void main(String[] args) {
        int[][] matrix = new int[][]{{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
        printMatrixInCircle(matrix);
    }
}

希望能够帮助您！如果您还有其他问题需要帮助，请随时提出。