如何跳过在同一行中插入的下一个变量？

Question

I put 1, 2, 3 then I want only 1 and 3 to be view.

BufferedReader br = new BufferedReader (new FileReader("medicine.txt"));
while(line= br.readLine() != null) {

    System.out.print("line+"br.readLine()):
}

Answer 1

Maybe you should split your line with the character ','

while(line = br.readLine() != null) {
    String[] splittedLine = line.split(",");
    System.out.println(splittedLine[0] + "-" + splittedLine[1]);
}

Answer 2

You can solve this in a myriad of ways but if you always want to skip "2", something like this should work:

while(line = br.readLine() != null) {
    if (line.equals("2")) {
        continue;
    }
    System.out.print("line: " + line);
}

Answer 3

您可以使用计数器并检查计数器是否到达您的行。