java - 如何获取文件中每一行的最后一个单词并将其放入另一个文件的每一行中

Question

我想复制文件1中每一行的最后一个单词并将其放入文件2的每一行中。

文件1

x n o n
y n n o
z n n n

文件2

n, n, n, B-S
n, o, o, I-S
n, n, n, S

输出

x n o n B-S
y n n o I-S
z n n n S

我的代码

    File f = new File("C:\\file.txt");
    BufferedReader reader = new BufferedReader(new FileReader(f)); 
    File f1 = new File("C:\\file1.txt");
    BufferedReader reader1 = new BufferedReader(new FileReader(f1));
    String line = null; 
    String line1 = null;
    while ((line1 = reader1.readLine())!= null) { 
        String c = line1.substring(line1.lastIndexOf(" ")+1);
        while((line = reader.readLine()) != null) {
             FileWriter fileWritter = new FileWriter(f.getName(),true);        
                    BufferedWriter bufferWritter = new BufferedWriter(fileWritter);            
                    bufferWritter.write(c);
                    bufferWritter.close();
        }
    }

Answer 1

既然您似乎知道如何读取和写入文件，我给您留下一个简单的代码来获取字符串中每行的最后一个单词。这里只是基本的分割:

String input1 = "x n o n\ny n n o\nz n n n";
String input2 = "n, n, n, B-S\nn, o, o, I-S\nn, n, n, S";
String[] input1Lines = input1.split("\n");
String[] input2Lines = input2.split("\n");
String result = "";

for(int i=0; i<input2Lines.length; i++) {
  String[] words = input2Lines[i].split(", ");
  String lastWord = words[words.length-1];
  result += input1Lines[i] + " " + lastWord + "\n";
}

System.out.println(result);