计算文件中的字符，单词和行数

不同的方法。使用字符串查找行数，单词数和字符数：

public static void main(String[] args) throws IOException {        //counters        int charsCount = 0;        int wordsCount = 0;        int linesCount = 0;        Scanner in = null;        File selectedFile = null;        JFileChooser chooser = new JFileChooser();        // choose file         if (chooser.showOpenDialog(null) == JFileChooser.APPROVE_OPTION) { selectedFile = chooser.getSelectedFile(); in = new Scanner(selectedFile);        }        while (in.hasNext()) { String tmpStr = in.nextLine(); if (!tmpStr.equalsIgnoreCase("")) {     String replaceAll = tmpStr.replaceAll("\s+", "");     charsCount += replaceAll.length();     wordsCount += tmpStr.split(" ").length; } ++linesCount;        }        //display the count of characters, words, and lines        System.out.println("# of chars: " + charsCount);        System.out.println("# of words: " + wordsCount);        System.out.println("# of lines: " + linesCount);        in.close();    }

注意：
对于其他编码样式，请使用

new Scanner(new File(selectedFile), "###");

newScanner(selectedFile);

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