如何在java中将字符串从三维数组拆分成新的二维数组

StringBuilder sb = new StringBuilder();
String[][][] threeDimArray = { {{"a", "b"}, {"c", "d"}}, {{"e", "f"}, {"g", "h"}} };

for (int i = 0; i < threeDimArray.length; i++) {
    for (int j = 0; j < threeDimArray[i].length; j++) {
        for (int k = 0; k < threeDimArray[i][j].length; k++) {
            sb.append(threeDimArray[i][j][k]);
        }
    }
}
String combinedString = sb.toString();

String[] oneDimArray = combinedString.split(",");

int rows = threeDimArray.length;
int cols = threeDimArray[0].length * threeDimArray[0][0].length;
String[][] twoDimArray = new String[rows][cols];

int index = 0;
for (int i = 0; i < rows; i++) {
    for (int j = 0; j < cols; j++) {
        twoDimArray[i][j] = oneDimArray[index++];
    }
}