分裂成两个单独的字符串

Question

那么我的意思是，我用类型String创建变量然后当我加载文件时，我必须将内容保存在一个变量中，在这种情况下变量是“TextFromFile”，加载后，我想将它分成两个单独的一个并将其保存在数组中，之后我只想在屏幕上显示两个单独的字符串。这就是想法。

/*
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 * and open the template in the editor.
 */
package zadania1;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

public class Zadania1 
{
    public static void main(String[] args) 
    {
        String TextFromFile = "";
        Zadania1 zad = new Zadania1(); 
        TextFromFile = zad.NacitajObsahZoSubora("C:\\Users\\Ivan\\Desktop\\test.txt");
        String[] pole = TextFromFile.split("[ \\ ]");
        System.out.println("Frist matrica " + pole[0] +" Second matrica: " + pole[1] +"");
    }

    public String NacitajObsahZoSubora(String fileName)
    {
        String text = "", tmp;
        try 
        {
            FileInputStream file = new FileInputStream(fileName);
            InputStreamReader input = new InputStreamReader(file);
            try (BufferedReader fromFile = new BufferedReader(input)) 
            {
                while((tmp = fromFile.readLine()) != null)
                {
                    text = text + "\n" + tmp;
                }
                System.out.println("Obsah suboru:\n" + text);
            }
        }
        catch(IOException e)
        {            
        }
        return text;
    }

    public void ZapisObsahDoSubora(String fileName, String writeText)
    {
        try
        {
            FileOutputStream file = new FileOutputStream(fileName);
            OutputStreamWriter output = new OutputStreamWriter(file);
            try (PrintWriter toFile = new PrintWriter(output)) 
            {
                toFile.println("" + writeText);
            }
        }
        catch (IOException e)
        {   
        }
    }
}

只有这一部分告诉我阵列没有反弹：

String[] pole = TextFromFile.split("[ \\ ]");
        System.out.println("Frist matrica " + pole[0] +" Second matrica: " + pole[1] +"");

错误：

线程“main”中的异常java.lang.ArrayIndexOutOfBoundsException：1位于zadania1.Zadania1.main（Zadania1.java:24）

Answer 1

根据我从评论中理解的内容，假设您的输入采用以下形式：

[1,2,3;4,5,6;][9,8;7,-6;50,61;]

您需要在拆分中使用另一个正则表达式，其中涉及一个后视：

String input = "[1,2,3;4,5,6;][9,8;7,-6;50,61;]";
String[] pole = input.split("(?<=\\])");
System.out.println("Frist matrica " + pole[0] +" Second matrica: " + pole[1] +"");

// Output:
// Frist matrica [1,2,3;4,5,6;] Second matrica: [9,8;7,-6;50,61;]