用java讀取文本文件

Question

我正在寫一個「Move To Front」編碼器，它讀取給定的文件，然後將文件解析爲列表。它對編碼工作正常，但它只適用於只有一行的文件，我認爲問題出在while循環中。

下面是代碼：

while ((line = br.readLine()) != 
     null) // While the line file is not empty after reading a line from teh text file split the line into strings 
{ 
    splitArray = line.split(" "); 
} 

for (int i = 0; i <= splitArray.length - 1; 
    i++) // for every string in the array test if it exists already then output data accordinly 
{ 
    if (FirstPass.contains(splitArray[i])) { 
    System.out.println(FirstPass.lastIndexOf(splitArray[i])); 
    FirstPass.addFirst(splitArray[i]); 
    FirstPass.removeLastOccurrence(splitArray[i]); 
    } else if (!FirstPass.contains(splitArray[i])) { 
    FirstPass.addFirst(splitArray[i]); 
    System.out.println("0 " + splitArray[i]); 
    } 
} 

System.out.println(" "); 
for (String S : FirstPass) { 
    System.out.println(S); 
} 

Answer 1

你的代碼解析splitArray是while循環外..所以只有最後一行將得到處理。

要處理的每一行，把while循環內整個for()塊..

while((line = br.readLine()) != null) // While the line file is not empty after reading a line from teh text file split the line into strings 
{ 
    splitArray = line.split(" "); 


    for(int i = 0; i <= splitArray.length - 1; i++)  // for every string in the array test if it exists already then output data accordinly 
    { 
     //.......... 
    } // end for 
} // end while 

Answer 2

支撐體系在錯誤的位置：

while((line = br.readLine()) != null) 
{ 
    splitArray = line.split(" "); 
} // This } shouuldn't be here...