String Matrix Rotation

package MultidimensionalArrays2;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class StringMatrixRotation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String[] command = scanner.nextLine().split("[()]");
        int degrees = Integer.parseInt(command[1]);

        List<String> inputs = new ArrayList<>();
        String input;
        int longestString = 0;
        while (!"END".equals(input = scanner.nextLine())) {
            inputs.add(input);
            if (longestString < input.length()) {
                longestString = input.length();
            }
        }

        char[][] matrix = new char[inputs.size()][longestString];
        int row = 0;
        for (String currentInput : inputs) {
            int index = 0;
            for (index = 0; index < currentInput.length(); index++) {
                matrix[row][index] = currentInput.charAt(index);
            }
            for (int i = index; i < matrix[row].length; i++) {
                matrix[row][i] = ' ';
            }
            row++;
        }
        printMatrix(flip(matrix, degrees));
    }

    static char[][] flip90(char[][] matrix) { // works
        char[][] flippedMatrix = new char[matrix[0].length][matrix.length];

        for (int i = 0; i < flippedMatrix.length; i++) {
            for (int j = 0; j < flippedMatrix[0].length; j++) {
                flippedMatrix[i][j] = matrix[matrix.length - 1 - j][i];
            }
        }
        return flippedMatrix;
    }

    static char[][] flip180(char[][] matrix) {
        char[][] flippedMatrix = new char[matrix.length][matrix[0].length];

        for (int i = 0; i < flippedMatrix.length; i++) {
            for (int j = 0; j < flippedMatrix[0].length; j++) {
                flippedMatrix[i][j] = matrix[matrix.length - 1 - i][matrix[0].length - 1 - j];
            }
        }
        return flippedMatrix;
    }

    static char[][] flip270(char[][] matrix) {
        char[][] flippedMatrix = new char[matrix[0].length][matrix.length];

        for (int i = 0; i < flippedMatrix.length; i++) {
            for (int j = 0; j < flippedMatrix[0].length; j++) {
                flippedMatrix[i][j] = matrix[j][matrix[0].length - 1 - i];
            }
        }
        return flippedMatrix;
    }

    static char[][] flip(char[][] matrix, int degrees) {
        degrees %= 360;
        if (degrees == 90) {
            return flip90(matrix);
        } else if (degrees == 180) {
            return flip180(matrix);
        } else if (degrees == 270) {
            return flip270(matrix);
        } else {
            return matrix;
        }
    }

    static void printMatrix(char[][] matrix) {
        for (int row = 0; row < matrix.length; row++) {
            for (int col = 0; col < matrix[0].length; col++) {
                System.out.print(matrix[row][col]);
            }
            System.out.println();
        }
    }
}