java - 将给定的字符串行打印到列中

Question

我有 *.txt 文件，第一行为姓名、地址、邮件 ID，第二行为值。我必须将其打印成两列，第一列包含标题，第二列包含使用 Java 的值。我该怎么做呢？

public class ReadFile1 {

    public static void main(String[] args) {
        BufferedReader br=null;
        String sCurrentLine = null;
        String delimiter = ",";
        String[] filetags;
        try {
            br = new BufferedReader(new FileReader("path\\Read.txt"));
            sCurrentLine = br.readLine();
            StringBuffer result = new StringBuffer();           
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } 
        String line = null;
        try {
            line = br.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        filetags = line.split(delimiter);
        for(int i = 0;i < line.length(); i++)
        {
            System.out.println("****" +sCurrentLine);
            String[] s = line.split(",");
            for(int j = i-1; j<line.length();j++)
            {
                System.out.println("##############"+Arrays.toString(s));
            }
        }
    }
}

这是我尝试过的。例如:我有一个文件说，

line1) name,email,mobile and second 
line2) john,j@abc.com,9876 
line3) max,max@xyz.com,1234  

现在，我需要打印:

name john
email john@abc.com                                                  
moblie 9876                                                  
name max                                                                
email max@xyz.com                                                  
mobile 1234 

Answer 1

以下是您可能获得所需内容的一种方法，它与您尝试的方法类似，但稍微更精致。

文件:

 name,email,mobile and second
 john,j@abc.com,9876
 max,max@xyz.com,1234

代码:

    //File is on my Desktop
    Path myFile = Paths.get(System.getProperty("user.home")).resolve("Desktop").resolve("tester.txt");
    //Try-With-Resources so we autoclose the reader after try block
    try(BufferedReader reader = new BufferedReader(new FileReader(myFile.toFile()))){
        String[] headings = reader.readLine().split(",");//Reads First line and gets headings
        String line;
        while((line = reader.readLine()) != null){//While there are more lines
            String[] values = line.split(","); //Get the values
            for(int i = 0; i < values.length; i++){//For each value
                System.out.println(headings[i] + ":  " + values[i]);//Print with a heading
            }
        }
    } catch (IOException io) {
        io.printStackTrace();
    } 

祝你好运!