java 小问题

Question

public class ArrayParser{ public static void main(String args[]){ double[][] d; String s = "1,2;3,4,5;6,7,8"; String[] sFirst = s.split(";"); d = new double[sFirst.length][]; for(int i = 0; i<sFirst.length ; i++){ String[] sSecond = sFirst[i].split(","); d[i] = new double [sSecond.length]; for(int j =0; j<sSecond.length; j++){ d[i][j] =Double.parseDouble(sSecond[j]); } } for( int i =0 ;i<d.length; i ++){ for(int j=0 ;i<d[i].length; j++){ System.out.print(d[i][j] +""); } System.out.println(); } }}

Answer 1

for(   j.length)

Answer 2

for( int i =0 ;i<d.length; i ++){
            for(int j=0 ;j<d[i].length; j++){
            System.out.print(d[i][j] +"");
                }
                System.out.println();
                        }