將輸入從文本文件保存到數組

Question

如何將文本文件內容保存到不同的陣列？

我的文本文件內容是這樣的;

12 14 16 18 13 17 14 18 10 23 
pic1 pic2 pic3 pic4 pic5 pic6 pic7 pic8 pic9 pic10 
left right top left right right top top left right 
100 200 300 400 500 600 700 800 900 1000 

如何將每行保存到不同的數組？ 例如

line 1 will be saved in an array1 
line 2 will be saved in an array2 
line 3 will be saved in an array3 
line 4 will be saved in an array4 

Answer 1

溶液1

List<String[]> arrays = new ArrayList<String[]>(); //You need an array list of arrays since you dont know how many lines does the text file has 
try { 
     BufferedReader in = new BufferedReader(new FileReader("infilename")); 
     String str; 
     while ((str = in.readLine()) != null) { 
      String arr[] = str.split(" "); 
      if(arr.length>0) arrays.add(arr); 
     } 
     in.close(); 
    } catch (IOException e) { 
    } 

在端陣列將包含每個數組。在您的例子arrays.length()==4

要遍歷數組了：

for(String[] myarr : arrays){ 
    //Do something with myarr 
} 

解決方案2：我不認爲這是一個好主意，但如果你是確保文件始終是要包含4條線你可以用空格字符做到這一點

String arr1[]; 
String arr2[]; 
String arr3[]; 
String arr4[]; 
try { 
     BufferedReader in = new BufferedReader(new FileReader("infilename")); 
     String str; 
     str = in.readLine(); 
     arr1[] = str.split(" "); 
     str = in.readLine(); 
     arr2[] = str.split(" "); 
     str = in.readLine(); 
     arr3[] = str.split(" "); 
     str = in.readLine(); 
     arr4[] = str.split(" "); 

     in.close(); 
    } catch (IOException e) { 
    } 

Answer 2

看看字符串[]拆分