來自文本文件的java二維數組

Question

我想將這個input.txt放入一個二維數組中。我嘗試了幾種不同的方法。這是我最近的嘗試，我似乎卡在這裏...任何幫助，非常感謝。

input.txt結構：SCI2000/Science/1200/10/C - >有23行5列。我也想爲每個專欄製作一個標題。

FileReader fr = new FileReader("input.txt"); 
    BufferedReader br = new BufferedReader(fr); 
    StringBuilder sb = new StringBuilder(); 
    String line = br.readLine(); 

    while (line != null) { 
     sb.append(line); 
     sb.append(System.lineSeparator()); 
     line = br.readLine(); 
    } 
    String everything = sb.toString(); 
    String[][] input = new String[23][5]; 
    String[] tokens = everything.split("/"); 
    for(String str : tokens) 
     System.out.print(str); 

Answer 1

，就在主處理部分（未測試）：

int columns = 5; 
String[] row = String[columns]; 
int j = 0; 

while ((line = br.readline) != null) { 
    row = line.split("/"); 
    for(int i=0; i<row.length; ++i) { 
     input[j,i] = row(i); 
    } 
    ++j; 
} 

Answer 2

FileReader fr = new FileReader("input.txt"); 
BufferedReader br = new BufferedReader(fr); 
String[][] input = new String[24][5]; // 1 row for title, 23 rows for data 

// add title 
input[0] = new String[]{"title1", "title1", "title1", "title1", "title1"}; 
String line = br.readLine(); 
int row = 1; // update here 

while ((line = br.readLine())!= null) { 
    input[row++] = line.split("/"); 
} 

// print all data 
for (int i = 0; i < input.length; i++) { 
    for (int j = 0; j < input[i].length; j++) 
     System.out.print(input[i][j] + " "); 

    //new line 
    System.out.println(); 
}