java中的CTRL+F逻辑

Question

我想在文本文件中搜索特定单词并将该单词存储在数组列表中。我已经这样做了，但它会给出文本文件中是否存在类似单词的输出。我想将该文本存储在数组列表中double count = 0, countBuffer = 0, countLine = 0;String lineNumber = "";String filePath = "D:\\PDFTOEXCEL\\Extractionfrompdf.txt";BufferedReader br;String inputSearch = "Facture";String line = "";try {    br = new BufferedReader(new FileReader(filePath));    try {        while ((line = br.readLine()) != null) {            countLine++;            //System.out.println(line);            String[] words = line.split(" ");            for (String word : words) {                if (word.equals(inputSearch)) {                    count++;                    countBuffer++;                }            }            if (countBuffer > 0) {                countBuffer = 0;                lineNumber += countLine + ",";            }        }        br.close();    } catch (IOException e) {        e.printStackTrace();    }} catch (FileNotFoundException e) {    e.printStackTrace();}

Answer 1

double count = 0, countBuffer = 0, countLine = 0;

String lineNumber = "";

String filePath = "D:\\PDFTOEXCEL\\Extractionfrompdf.txt";

BufferedReader br;

String inputSearch = "Facture";

String line = "";

List<String> searchedWords = new ArrayList<>();

try {

    br = new BufferedReader(new FileReader(filePath));

    try {

        while ((line = br.readLine()) != null) {

            countLine++;

            //System.out.println(line);

            String[] words = line.split(" ");

            for (String word : words) {

                if (word.equals(inputSearch)) {

                    count++;

                    countBuffer++;

                    if(!searchedWords.contains(word)){

                        searchedWords.add(word);

                    }

                }

            }

            if (countBuffer > 0) {

                countBuffer = 0;

                lineNumber += countLine + ",";

            }

        }

        br.close();

    } catch (IOException e) {

        e.printStackTrace();

    }

} catch (FileNotFoundException e) {

    e.printStackTrace();

}

System.out.println("Words that you have searched and found:");

for(String word : searchedWords){

    System.out.println(word);

}

您将拥有一个searchedWords跟踪搜索单词的数组列表，您会注意到 if 语句不允许在数组列表中重复，因此如果您想允许重复，只需删除if(!searchedWords.contains(word))并写入searchedWords.add(word);.

Answer 2

您可以使用其他声明定义一个 String ArrayList：

ArrayList<String> matches = new ArrayList<String>();

然后，当您找到匹配的单词时，使用以下命令将其添加到 ArrayList：

matches.add(word);

编辑：

double count = 0, countBuffer = 0, countLine = 0;

String lineNumber = "";

String filePath = "D:\\PDFTOEXCEL\\Extractionfrompdf.txt";

BufferedReader br;

String inputSearch = "Facture";

String line = "";

ArrayList<String> matches = new ArrayList<String>();

try {

    br = new BufferedReader(new FileReader(filePath));

    try {

        while ((line = br.readLine()) != null) {

            countLine++;

            //System.out.println(line);

            String[] words = line.split(" ");

            for (String word : words) {

                if (word.equals(inputSearch)) {

                    count++;

                    countBuffer++;

                    matches.add(word);

                }

            }

            if (countBuffer > 0) {

                countBuffer = 0;

                lineNumber += countLine + ",";

            }

        }

        br.close();

    } catch (IOException e) {

        e.printStackTrace();

    }

} catch (FileNotFoundException e) {

    e.printStackTrace();

}