字符串数据=1 |苹果，2 |球，3 |猫;
    串[]行= data.split（，）;    的String [] [] =矩阵新的String [rows.length] [];
    INT R = 0;
    对于（字符串行：行）{
        矩阵[R +] = row.split（\\\\ |）;
    }    的System.out.println（矩阵[1] [1]）;
    //输出球    的System.out.println（Arrays.deepToString（矩阵））;
    //输出[[1，苹果]，[2，球]，[3，猫]]
 

pretty除了String.split$c$c>需要正则表达式，那么元字符 | 需要转义

另请参见

• Regular前pressions和转义特殊字符


• Java满足Arrays.equals（）返回二维数组假的。
  
  
  
  • 使用 Arrays.deepToString 和 Arrays.deepEquals 多维数组
  
  

---

替代

如果你知道有多少行和列会出现，你可以pre-分配的String [] [] ，并使用扫描仪如下：

 扫描仪SC =新的扫描仪（数据）.useDelimiter（[，|]）;
    最终诠释M = 3;
    最终诠释N = 2;
    的String [] [] =矩阵新的String [M] [N];
    对于（INT R = 0;为r，M，R ++）{
        对于（INT C = 0; C＆LT; N，C ++）{
            矩阵[R] [C] = sc.next（）;
        }
    }
    的System.out.println（Arrays.deepToString（矩阵））;
    //输出[[1，苹果]，[2，球]，[3，猫]]
 

I like to convert string for example :

String data = "1|apple,2|ball,3|cat";

into a two dimensional array like this

{{1,apple},{2,ball},{3,cat}}

I have tried using the split("") method but still no solution :(

Thanks..

Kai

    String data = "1|apple,2|ball,3|cat";
    String[] rows = data.split(",");

    String[][] matrix = new String[rows.length][]; 
    int r = 0;
    for (String row : rows) {
        matrix[r++] = row.split("\\|");
    }

    System.out.println(matrix[1][1]);
    // prints "ball"

    System.out.println(Arrays.deepToString(matrix));
    // prints "[[1, apple], [2, ball], [3, cat]]"

Pretty straightforward except that String.split takes regex, so metacharacter | needs escaping.

See also

• Regular expressions and escaping special characters
• Java Arrays.equals() returns false for two dimensional arrays.
  • Use Arrays.deepToString and Arrays.deepEquals for multidimensional arrays

---

Alternative

If you know how many rows and columns there will be, you can pre-allocate a String[][] and use a Scanner as follows:

    Scanner sc = new Scanner(data).useDelimiter("[,|]");
    final int M = 3;
    final int N = 2;
    String[][] matrix = new String[M][N];
    for (int r = 0; r < M; r++) {
        for (int c = 0; c < N; c++) {
            matrix[r][c] = sc.next();
        }
    }
    System.out.println(Arrays.deepToString(matrix));
    // prints "[[1, apple], [2, ball], [3, cat]]"