Java: Splitting a file into a string for each line?

Question

Hi I'm struggling to have my code read each line and save it into a String for each individual line. My code is below to load the text file but I can't seem to split it, I can get the first line split and that is it. I'm not brilliant at Java but I'm trying to load a text file that has 4 lines and I need to split that code from the file into different strings. I can get it to get the first line of code but that's about it.

 Load.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { JFileChooser fileChooser = new JFileChooser(); int returnValue = fileChooser.showOpenDialog(null); if (returnValue == JFileChooser.APPROVE_OPTION) { File file = fileChooser.getSelectedFile(); try { BufferedReader reader = new BufferedReader(new FileReader(file)); String nextLine = reader.readLine(); if ( nextLine != null && nextLine.startsWith("Title:")) { title = nextLine.substring(6); panel.showText(title); nextLine = reader.readLine(); } reader.close(); } catch (IOException e1) { System.err.println("Error while reading the file"); } } } });

Eldhose Abraham · Accepted Answer · 2017-11-21 09:21:50Z

I think below may be useful https://kodejava.org/how-do-i-read-text-file-content-line-by-line-using-commons-io/.

This suggests FileUtils from apache commons. Copied from the above site.

 File file = new File("sample.txt"); try { List<String> contents = FileUtils.readLines(file); // Iterate the result to print each line of the file. for (String line : contents) { System.out.println(line); } }

Please add the relevant details from that link here, since, if the contents of that link change later, your answer here may go bad.

Pang · Accepted Answer · 2017-11-21 00:57:51Z

0

while(nextLine != null){ if ( nextLine != null && nextLine.startsWith("Title:")) { title = nextLine.substring(6); panel.showText(title); nextLine = reader.readLine(); } } reader.close();

should do it

edited Nov 21, 2017 at 0:57

Pang

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answered Nov 19, 2017 at 22:58

dave

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2 Comments

Christian Over a year ago

Why are you checking twice for nextLine != null

dave Over a year ago

highlighting where to add a while loop more than on the code itself, if I was realy bothered by it I'd have spilt this into a method which it should probably be

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