给一个非矩形数组（Nonrectangular Arrays）

8.4 Nonrectangular Arrays（非矩形数组） 

public class Test {

    public static void main(String[] args) {

        String[ ] str;

        str=new String[2]; 

        str[0]="aaa";

        str[1]="bb";

        String[ ] str1;

        str1=new String[]{"aaa","bbb"};

//        假如写成下一句，就报这个错。Cannot define dimension expressions when an array initializer is provided

//        str1=new String[2]{"aaa","bbb"};

        System.out.println(str1[0]+str1[1]);

        String[][] x = new String[3][];

        x[0]=new String[]{"hello","马克-to-win"};

        x[1]=new String[]{"are","you","fine"};

        x[2]=new String[]{"ok"};

        for(int i=0; i<3;i++){

            for(int j=0;j<x[i].length;j++){

                    System.out.println("x["+i+"]["+j+"]"+" is "+x[i][j]);

            }

        }

    }

}

更多请看：https://blog.csdn.net/qq_44639795/article/details/103124325