java 字符串变二维字符串_Java-J2SE学习笔记-字符串转化为二维数组

1.字符串转化为二维Double数组

2.代码：

package Test;

public class TestDouble {

public static void main(String[] args) {

String str = "1,2;3,4,5;6,7,8,9";

String [] strArr = str.split(";");

String [] strArr2;

int len = strArr.length;

int len2;

Double [][] doubles = new Double[len][];

//doubles[0] = new Double[2];

//doubles[0][1] = 0.22;

//System.out.println(doubles[0][1]);

for(int i = 0 ; i < len ; i++){

strArr2 = strArr[i].split(",");

len2 = strArr2.length;

doubles[i] = new Double[len2];

for(int j = 0 ; j < len2 ; j++){

//System.out.println(i+"--"+j+"--"+Double.valueOf(strArr2[j]));

doubles[i][j] = Double.valueOf(strArr2[j]);

}

}

for(Double [] d : doubles){

for(Double d2 : d){

System.out.print(d2+"\t");

}

System.out.println();

}

}

}

3.运行结果：