JAVA从控制台获取输入并进行字符串解析

写一个方法返回一个double类型二维数组，数组的数据来源于字符串。

例：字符串"1,2;3,4,5;6,7,8"，将数字提取出来赋值给一个二维数组。b[][] = {{1,2},{3,4,5},{6,7,8}}

java代码：

import java.io.*;
public class StringParser {
	public static void main(String[] args) {
		System.out.println("请输入一个纯数字的字符串：");
		String in = getInputString();
		double[][] d = stringParse(in);
		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();
		}
	}
	
	public static String getInputString() {
		BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
		try{
			return reader.readLine();
		} catch(IOException e) { e.printStackTrace(); }
		return null;
	}
	
	public static double[][] stringParse(String s) {
		String[] str1 = s.split(";");
		double[][] result = new double[str1.length][];
		for (int i=0; i<str1.length; i++) {
		 	String[] str2 = str1[i].split(",");
		 	result[i] = new double[str2.length];
		 	for (int j=0; j<str2.length; j++) {
		 	 	result[i][j] = Double.parseDouble(str2[j]);
		 	}
		}
		return result;	
	}
}