矩阵相乘，把条件移到第二个方法里

hello，我现在想把几乎所有的东西都放在第二个function里，因为检查的时候只看第二个方法，不看main方法， 但是那样的话我就不会call 方法了，然后之前给double array赋的值也用不上了，不知道该怎么解决，求指点。谢谢

下面放的这个是可以跑成功的，但是我需要把if else都从main里移出去到第二个方法

public class MatrixMult {

    public static void main(String[] args) {
        double[][] firstMatrix = {{3.0, 2.0, 1.0},{1.0, 2.0, 3.0}};
        double[][] secondMatrix = {{4.0, 5.0},{5.0, 4.0},{6.0, 5.0}};

        if(firstMatrix[0].length != secondMatrix.length){
            System.out.println("Warning!");
        }
        else{
            double[][] result = multiplyMatrices(firstMatrix, secondMatrix);
            for(int row = 0; row < result.length; row++){
                for(int column = 0; column < result[0].length; column++){
                    System.out.print(result[row][column] + " ");
                }
                System.out.println();
            }  
        }
    }

    public static double[][] multiplyMatrices(double[][] firstMatrix, double[][] secondMatrix){
        double[][] result = new double[firstMatrix.length] [secondMatrix[0].length];
         
        
            for(int row = 0; row < firstMatrix.length; row++){
                for(int column = 0; column < secondMatrix[0].length; column++){
                    for(int i = 0; i < firstMatrix[0].length; i++){
                        result[row][column] += firstMatrix[row][i] * secondMatrix[i][column];
                    }
                }
            } 
        return result;
    }
}

  public static void main(String[] args) {
            get();
        }

    private static void get() {
        double[][] firstMatrix = {{3.0, 2.0, 1.0},{1.0, 2.0, 3.0}};
        double[][] secondMatrix = {{4.0, 5.0},{5.0, 4.0},{6.0, 5.0}};
        if(firstMatrix[0].length != secondMatrix.length){
            System.out.println("Warning!");
        }
        else{
            double[][] result = new double[firstMatrix.length] [secondMatrix[0].length];

            for(int row = 0; row < firstMatrix.length; row++){
                for(int column = 0; column < secondMatrix[0].length; column++){
                    for(int i = 0; i < firstMatrix[0].length; i++){
                        result[row][column] += firstMatrix[row][i] * secondMatrix[i][column];
                    }
                }
            }
            for(int row = 0; row < result.length; row++){
                for(int column = 0; column < result[0].length; column++){
                    System.out.print(result[row][column] + " ");
                }
                System.out.println();
            }
        }
    }