在文本文件中查找字符串的方法。然后使以下行达到一定限制

您可以执行以下操作：

File file = new File("Student.txt");try {    Scanner scanner = new Scanner(file);    //now read the file line by line...    int lineNum = 0;    while (scanner.hasNextLine()) {        String line = scanner.nextLine();        lineNum++;        if(<some condition is met for the line>) {  System.out.println("ho hum, i found it on line " +lineNum);        }    }} catch(FileNotFoundException e) {     //handle this}