Java 如何在3D排列中打印不同尺寸的矩阵？

我不知道你是否理解我，但我制作了一个3D数组，其中每个“矩阵”都有相同的行，但列不同：

int nMatrix=3，行数=5；
字符串[][]矩阵=新字符串[nMatrix][]；
矩阵[0]=新字符串[行][r.nextInt（3）+5]；
矩阵[1]=新字符串[行][r.nextInt（3）+5]；
矩阵[2]=新字符串[行][r.nextInt（3）+5]；

我希望我能打印这封信，但同时：

// 5x5 matrix
[ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ]

// 5x7 matrix
[ ] [ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ] [ ]

// 5x6 matrix
[ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ]
[ ] [ ] [ ] [ ] [ ] [ ]

有可能这样做吗？

试试这个

for (String[][] x : matrix) {
    for (String[] y : x)
        System.out.println(Arrays.toString(y));
    System.out.println();
}

输出：

[null, null, null, null, null]
[null, null, null, null, null]
[null, null, null, null, null]
[null, null, null, null, null]
[null, null, null, null, null]

[null, null, null, null, null, null, null]
[null, null, null, null, null, null, null]
[null, null, null, null, null, null, null]
[null, null, null, null, null, null, null]
[null, null, null, null, null, null, null]

[null, null, null, null, null, null]
[null, null, null, null, null, null]
[null, null, null, null, null, null]
[null, null, null, null, null, null]
[null, null, null, null, null, null]