新手Java

package practice;

public class ArrrayParser {
    public static void main(String args []){
        String s="1,2;3,4,5;6,7,8";
        double[][]d;
        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;j<=d[i].length;j++){
                System.out.print(d[i][j]+" ");
            }
            System.out.println();
        }
    }

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
    at practice.ArrrayParser.main(ArrrayParser.java:13)

这是为何?如何解决?

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    2 个回答
    • 636

    你确定最后没有少一个大括号?


    package practice;
    
    public class ArrrayParser {
        public static void main(String args[]) {
            String s = "1,2;3,4,5;6,7,8";
            double[][] d;
            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; j < d[i].length; j++) {
                    System.out.print(d[i][j] + " ");
                }
                System.out.println();
            }
        }
    }
    

    注意是小于,不是小于等于

      d=new double[sFirst.length][];
      你确定这样通过了编译?

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